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List: esb-java-dev
Subject: Re: [Dev] [GSOC2016]Proposal 4: [ML] Ensemble Methods Support for WSO2 Machine Learner
From: Nirmal Fernando <nirmal () wso2 ! com>
Date: 2016-08-30 6:38:24
Message-ID: CAJ+w7F=1rRAbsV4Lo0Ma0Eb5J1Rddajr7xf9ij+00X_u7cMRCw () mail ! gmail ! com
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Congratulations Misgana!! Thanks for all the hard work and we look forward
to work with you in future too.
All the very best !
On Mon, Aug 22, 2016 at 9:32 AM, Supun Sethunga <supuns@wso2.com> wrote:
> Hi Misgana,
>
> I believe you have completed all the tasks. Please make sure you submit
> everything to GSoC on time :)
>
> Regards,
> Supun
>
> On Fri, Aug 19, 2016 at 9:17 AM, Supun Sethunga <supuns@wso2.com> wrote:
>
>> Hi,
>>
>> High-level info should be enough...
>>
>> Thanks,
>> Supun
>>
>> On Thu, Aug 18, 2016 at 5:57 PM, Misgana Negassi <
>> negassim@tf.uni-freiburg.de> wrote:
>>
>>> Hi Supun,
>>>
>>> I have a question about how technical the documentation should be.
>>> Should I just explain high-level changes and how it is done, or go deeper
>>> and talk about technical details such as which functionality are added
>>> and/or changed and how?
>>>
>>> Thank you!
>>>
>>> Misgana
>>>
>>> On 18.08.2016 12:03, Supun Sethunga wrote:
>>>
>>> Hi Misgana,
>>>
>>> Currently, your documentation [1] says "Performance Comparison". I would
>>> suggest to make it the Final Documentation for the project (rather than
>>> just the perf comparison, but including those too). So you will have to add
>>> a brief introduction to the project, the objectives, the solution, and then
>>> finally the performance comparison. In that doc, you can add the two PR's
>>> as references, for the solution section. And you can then send the link of
>>> the documentation for the final evaluation. Would that work?
>>>
>>> [1] https://docs.google.com/document/d/1bpTMiSciOqt7vfDgYglS
>>> BQucQReDs-btEa5xFjBZkDU/edit
>>>
>>> Regards,
>>> Supun
>>>
>>> On Thu, Aug 18, 2016 at 2:51 PM, Misgana Negassi <
>>> negassim@tf.uni-freiburg.de> wrote:
>>>
>>>> Dear Supun,
>>>>
>>>> How would you suggest I send link of my work for final evaluation since
>>>> I contributed to two repositories? Do you have any comments on my work
>>>> before I publish the link?
>>>>
>>>> Thank you,
>>>>
>>>> Misgana
>>>>
>>>> On 15.08.2016 18:01, Misgana Negassi wrote:
>>>>
>>>> Hi Supun,
>>>>
>>>> I updated the PR as per your comments. And also updated the
>>>> documentation.
>>>>
>>>> I'm grateful for your feedback.
>>>>
>>>> Thanks,
>>>>
>>>> Misgana
>>>>
>>>> On 15.08.2016 05:59, Supun Sethunga wrote:
>>>>
>>>> Hi Misgana,
>>>>
>>>> Added couple of comments on the PR. Can you please check them and
>>>> update?
>>>> Also in the documentation, can you add some brief description of the
>>>> project, the objectives, and the brief explanation about your solution,
>>>> apart from the accuracy numbers?
>>>>
>>>> Once you fix those, please share them both in this thread.
>>>>
>>>> Thanks,
>>>> Supun
>>>>
>>>> On Mon, Aug 15, 2016 at 9:17 AM, Misgana Negassi <
>>>> negassim@tf.uni-freiburg.de> wrote:
>>>>
>>>>> Hi Supun,
>>>>>
>>>>> I have done all three tasks you mentioned. I would be grateful for
>>>>> your comments.
>>>>>
>>>>> Best,
>>>>> Misgana
>>>>>
>>>>> On 10.08.2016 12:52, Supun Sethunga wrote:
>>>>>
>>>>> Hi Misgana,
>>>>>
>>>>> As the GSoC Pencil down deadline is approaching, shall we wrap things
>>>>> up by:
>>>>>
>>>>> - Finishing and sharing the final documentation (including
>>>>> accuracy comparison and etc),
>>>>> - Cleaning-up / Formating the code,
>>>>> - Sending git pull request(s) to wso2/carbon-ml and
>>>>> wso2/product-ml.
>>>>>
>>>>> Regards,
>>>>> Supun
>>>>>
>>>>> On Mon, Jul 25, 2016 at 9:24 AM, Supun Sethunga <supuns@wso2.com>
>>>>> wrote:
>>>>>
>>>>>> Hi Misgana,
>>>>>>
>>>>>> Thats great!
>>>>>>
>>>>>> [1] The data that was passed to [2] was already encoded so when
>>>>>>> passed to the BasicEncoder, it was considered as unknown String and
>>>>>>> defaulted to 0th mapping. So, I decoded the data before passing it to
>>>>>>> getVectors() method.
>>>>>>
>>>>>> Does that means, it first decodes, before passing into the method,
>>>>>> and again encodes inside that method? If so, it's better to pass a flag
>>>>>> (boolean) to that getVectors() method along with the data, to
>>>>>> indicate whether to encode or not. That way you can avoid unnecessary
>>>>>> decoding and encoding..
>>>>>>
>>>>>> Yes, its OK to setup the demo any day at 10AM IST. Please invite
>>>>>> Nirmal (cc'ed) too.
>>>>>>
>>>>>> Thanks,
>>>>>> Supun
>>>>>>
>>>>>> On Sat, Jul 23, 2016 at 4:42 PM, Misgana Negassi <
>>>>>> negassim@tf.uni-freiburg.de> wrote:
>>>>>>
>>>>>>> Hallo Supun,
>>>>>>>
>>>>>>> Sorry for the late response.
>>>>>>>
>>>>>>> The issue with the encoding values is resolved. Please see [1].
>>>>>>>
>>>>>>> I am now cleaning up code and preparing for the presentation. As I
>>>>>>> have mentioned in my proposal, I am attending a summer school next week. If
>>>>>>> the presentation will be next week, would be it be possible to do it early
>>>>>>> 10AM IST, any day of the week except Wednesday? If not, the other week. Are
>>>>>>> the aforementioned appointments ok?
>>>>>>>
>>>>>>> Thank you!
>>>>>>> Misgana
>>>>>>>
>>>>>>>
>>>>>>> [1] The data that was passed to [2] was already encoded so when
>>>>>>> passed to the BasicEncoder, it was considered as unknown String and
>>>>>>> defaulted to 0th mapping. So, I decoded the data before passing it to
>>>>>>> getVectors() method.
>>>>>>>
>>>>>>> [2] https://github.com/zemoel/carbon-ml/blob/master/componen
>>>>>>> ts/ml/org.wso2.carbon.ml.core/src/main/java/org/wso2/carbon/
>>>>>>> ml/core/impl/Predictor.java#L313
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> On 20.07.2016 06:43, Supun Sethunga wrote:
>>>>>>>
>>>>>>> Hi,
>>>>>>>
>>>>>>> Can you remote debug and see what are the encoding values you get at
>>>>>>> [1] ?
>>>>>>>
>>>>>>> [1] https://github.com/zemoel/carbon-ml/blob/master/componen
>>>>>>> ts/ml/org.wso2.carbon.ml.core/src/main/java/org/wso2/carbon/
>>>>>>> ml/core/impl/Predictor.java#L313
>>>>>>>
>>>>>>> On Tue, Jul 19, 2016 at 9:11 PM, Misgana Negassi <
>>>>>>> negassim@tf.uni-freiburg.de> wrote:
>>>>>>>
>>>>>>>> Hi Supun,
>>>>>>>>
>>>>>>>> I can track the weird results down to the encodings. Here [1] it
>>>>>>>> encodes the test dataset to all zeros excluding the first column.
>>>>>>>> Do you have time in the next days for a hangout session to help me
>>>>>>>> on this issue?
>>>>>>>>
>>>>>>>> Thanks!
>>>>>>>> Misgana
>>>>>>>>
>>>>>>>> [1] https://github.com/zemoel/carbon-ml/blob/master/components/m
>>>>>>>> l/org.wso2.carbon.ml.core/src/main/java/org/wso2/carbon/ml/c
>>>>>>>> ore/impl/Predictor.java#L75
>>>>>>>>
>>>>>>>>
>>>>>>>> On 15.07.2016 10:34, Misgana Negassi wrote:
>>>>>>>>
>>>>>>>> Hi Supun,
>>>>>>>>
>>>>>>>> sorry it was not a clear question. Actually, after working on it
>>>>>>>> more, I found out the problem lies when we set the attributes for the
>>>>>>>> mlmodel in BaseModelBuilder eg. includedFeatures, encodings and
>>>>>>>> responseIndex. I used to get it from the workflow which is not compatible
>>>>>>>> to the levelOneDataset.
>>>>>>>>
>>>>>>>> Currently I am trying to understand what these are and how I can
>>>>>>>> populate them to be compatible to LevelOneDataset.
>>>>>>>> My idea is to create helper method to setFeatures(name,
>>>>>>>> ImputeOption, ..) and get them, and create an empty map for encodings. For
>>>>>>>> responseIndex, I dont have idea yet.
>>>>>>>>
>>>>>>>> Can you give me a hint?
>>>>>>>> Thanks,
>>>>>>>> Misgana
>>>>>>>>
>>>>>>>> On 15.07.2016 05:57, Supun Sethunga wrote:
>>>>>>>>
>>>>>>>> Hi,
>>>>>>>>
>>>>>>>> Sorry I didn't get the question. can you explain it a bit?
>>>>>>>>
>>>>>>>> Thanks,
>>>>>>>> Supun
>>>>>>>>
>>>>>>>> On Thu, Jul 14, 2016 at 6:22 PM, Misgana Negassi <
>>>>>>>> negassim@tf.uni-freiburg.de> wrote:
>>>>>>>>
>>>>>>>>> Hi Supun,
>>>>>>>>>
>>>>>>>>> I have a question regarding the issue with the Stacking
>>>>>>>>> LevelOneDataset.
>>>>>>>>> I envoke sparkContext parallelize method to get
>>>>>>>>> JavaRDD<LabeledPoint>. But here is what I get:
>>>>>>>>> LevelOneDataset : ParallelCollectionRDD at parallelize . Do we
>>>>>>>>> expect rather MapPartitionRDD at randomSplit? If so, can you give me a hint
>>>>>>>>> how to cast/get it?
>>>>>>>>>
>>>>>>>>> Best,
>>>>>>>>> Misgana
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> On 14.07.2016 08:58, Supun Sethunga wrote:
>>>>>>>>>
>>>>>>>>> Hi Misgana,
>>>>>>>>>
>>>>>>>>> That is great! Keep it up!
>>>>>>>>> Yes, let's try to solve all the issues of the existing methods
>>>>>>>>> first, before moving on to the other one. Also do not worry about the
>>>>>>>>> accuracy, because it can be increased by tuning the hyper-parameters, which
>>>>>>>>> is up to the user.. :)
>>>>>>>>>
>>>>>>>>> Once you solve the current issues, can you setup a small demo
>>>>>>>>> with the ML team, to show how the two methods work from end to end, to some
>>>>>>>>> sample dataset?
>>>>>>>>>
>>>>>>>>> Regards,
>>>>>>>>> Supun
>>>>>>>>>
>>>>>>>>> On Thu, Jul 14, 2016 at 11:55 AM, Misgana Negassi <
>>>>>>>>> negassim@tf.uni-freiburg.de> wrote:
>>>>>>>>>
>>>>>>>>>> Hi Supun,
>>>>>>>>>>
>>>>>>>>>> This is what I have done:
>>>>>>>>>> 1. Stacking
>>>>>>>>>> Issue with getting the Hyperparameters in a Map of Maps is
>>>>>>>>>> resolved now. Basically Stacking is implemented end-to-end. I am now
>>>>>>>>>> tackling a error which arises while training the Metamodel. My hypothesis
>>>>>>>>>> is that the problem lies while stacking the predictions to form the
>>>>>>>>>> levelOneDataset.
>>>>>>>>>>
>>>>>>>>>> 2. Bagging
>>>>>>>>>> Bagging is also implemented end-to-end. But the accuracy is low:
>>>>>>>>>> 67.5%. I am trying to figure out where the problem lies.
>>>>>>>>>>
>>>>>>>>>> I have commited my latest code. Once I am done with those Issues,
>>>>>>>>>> I will implement Boosting.
>>>>>>>>>>
>>>>>>>>>> Best,
>>>>>>>>>> Misgana
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> On 14.07.2016 07:03, Supun Sethunga wrote:
>>>>>>>>>>
>>>>>>>>>> Hi,
>>>>>>>>>>
>>>>>>>>>> Can you please give us a brief update on the current status?
>>>>>>>>>>
>>>>>>>>>> Thanks,
>>>>>>>>>> Supun
>>>>>>>>>>
>>>>>>>>>> On Wed, Jul 6, 2016 at 9:41 AM, Supun Sethunga <supuns@wso2.com>
>>>>>>>>>> wrote:
>>>>>>>>>>
>>>>>>>>>>> Hi Misgana,
>>>>>>>>>>>
>>>>>>>>>>> Can you give us a brief update?
>>>>>>>>>>>
>>>>>>>>>>> Thanks,
>>>>>>>>>>> Supun
>>>>>>>>>>>
>>>>>>>>>>> On Fri, Jul 1, 2016 at 12:40 PM, Supun Sethunga <supuns@wso2.com
>>>>>>>>>>> > wrote:
>>>>>>>>>>>
>>>>>>>>>>>> Hi,
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>> Also, the server I am using is the one created from building
>>>>>>>>>>>>> the product-ml and then unpacking modules/distribution/target/
>>>>>>>>>>>>> wso2ml-2.0.0-SNAPSHOT.zip. The server I downloaded from WSO2
>>>>>>>>>>>>> website and patches still doesn't recognize my changes.
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>> Does your changes take effect in the pack built from source? if
>>>>>>>>>>>> so, please proceed with it.
>>>>>>>>>>>>
>>>>>>>>>>>> On Thu, Jun 30, 2016 at 6:13 PM, Misgana Negassi <
>>>>>>>>>>>> negassim@tf.uni-freiburg.de> wrote:
>>>>>>>>>>>>
>>>>>>>>>>>>> Hi Supun,
>>>>>>>>>>>>>
>>>>>>>>>>>>> Thank you for pointing out the missing comma in h2.script has
>>>>>>>>>>>>> solved the problem while creating the hyper-parameters table.
>>>>>>>>>>>>>
>>>>>>>>>>>>> I have now included algorithmName as second hyperparameter and
>>>>>>>>>>>>> trying to debug the NullPointerException. I am currently trying to retrace
>>>>>>>>>>>>> my steps and see of any logical flaw in creating the
>>>>>>>>>>>>> Map<String, Map<String, String>> Hyperparameters.
>>>>>>>>>>>>>
>>>>>>>>>>>>> Also, the server I am using is the one created from building
>>>>>>>>>>>>> the product-ml and then unpacking modules/distribution/target/wso2ml-2.0.0-SNAPSHOT.zip.
>>>>>>>>>>>>> The server I downloaded from WSO2 website and patches still doesn't
>>>>>>>>>>>>> recognize my changes.
>>>>>>>>>>>>>
>>>>>>>>>>>>> Best,
>>>>>>>>>>>>> Misgana
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>> On 30.06.2016 08:16, Supun Sethunga wrote:
>>>>>>>>>>>>>
>>>>>>>>>>>>> Hi Misgana,
>>>>>>>>>>>>>
>>>>>>>>>>>>> I tried to run you script with your forks of carbon-ml [1] and
>>>>>>>>>>>>> product-ml [2], but noticed several issues.
>>>>>>>>>>>>>
>>>>>>>>>>>>> 1. There are some issues in the model-generation.sh. (A
>>>>>>>>>>>>> whitespace at [3]. "./jq" should be "jq").
>>>>>>>>>>>>> 2. There's a typo in the h2.sql script [4] (missing
>>>>>>>>>>>>> comma), hence the DB table is not getting created. So any step beyond
>>>>>>>>>>>>> creating hyper-parameters aren't working.
>>>>>>>>>>>>> 3. In the SQL statement [5], you are setting only one
>>>>>>>>>>>>> parameter, while the prepared statement expect two parameters.
>>>>>>>>>>>>>
>>>>>>>>>>>>> Can you fix those please?
>>>>>>>>>>>>> Are the two repos different from your working copy?
>>>>>>>>>>>>>
>>>>>>>>>>>>> [1] https://github.com/zemoel/carbon-ml
>>>>>>>>>>>>> [2] https://github.com/zemoel/product-ml
>>>>>>>>>>>>> [3] https://github.com/zemoel/product-ml/blob/master/modules
>>>>>>>>>>>>> /samples/tuned/stacking/model-generation.sh#L60
>>>>>>>>>>>>> [4] https://github.com/zemoel/carbon-ml/blob/master/features
>>>>>>>>>>>>> /ml/org.wso2.carbon.ml.database.feature/src/main/resources/d
>>>>>>>>>>>>> bscripts/h2.sql#L152
>>>>>>>>>>>>> [5] https://github.com/zemoel/carbon-ml/blob/master/componen
>>>>>>>>>>>>> ts/ml/org.wso2.carbon.ml.database/src/main/java/org/wso2/car
>>>>>>>>>>>>> bon/ml/database/internal/MLDatabaseService.java#L2183
>>>>>>>>>>>>>
>>>>>>>>>>>>> Regards,
>>>>>>>>>>>>> Supun
>>>>>>>>>>>>>
>>>>>>>>>>>>> On Wed, Jun 29, 2016 at 6:52 PM, Misgana Negassi <
>>>>>>>>>>>>> negassim@tf.uni-freiburg.de> wrote:
>>>>>>>>>>>>>
>>>>>>>>>>>>>> Hi Supun,
>>>>>>>>>>>>>> I logged into the server using UI. As you can see from the
>>>>>>>>>>>>>> screenshot below, the installed features are of the previous version of
>>>>>>>>>>>>>> server. Do you think, this could be the problem?[image:
>>>>>>>>>>>>>> screenshot]
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> Best,
>>>>>>>>>>>>>> Misgana
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> On 29.06.2016 08:06, Supun Sethunga wrote:
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> Hi,
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> I will check and let you know
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> Regards,
>>>>>>>>>>>>>> Supun
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> On Tue, Jun 28, 2016 at 5:33 AM, Misgana Negassi <
>>>>>>>>>>>>>> negassim@tf.uni-freiburg.de> wrote:
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> Hi Supun,
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> These are the links for the code I changed.
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> https://github.com/zemoel/carbon-ml/blob/master/components/m
>>>>>>>>>>>>>>> l/org.wso2.carbon.ml.database/src/main/java/org/wso2/carbon/
>>>>>>>>>>>>>>> ml/database/DatabaseService.java#L422
>>>>>>>>>>>>>>> https://github.com/zemoel/carbon-ml/blob/master/components/m
>>>>>>>>>>>>>>> l/org.wso2.carbon.ml.database/src/main/java/org/wso2/carbon/
>>>>>>>>>>>>>>> ml/database/internal/MLDatabaseService.java#L2173
>>>>>>>>>>>>>>> https://github.com/zemoel/carbon-ml/blob/master/components/m
>>>>>>>>>>>>>>> l/org.wso2.carbon.ml.database/src/main/java/org/wso2/carbon/
>>>>>>>>>>>>>>> ml/database/internal/MLDatabaseService.java#L2506
>>>>>>>>>>>>>>> https://github.com/zemoel/carbon-ml/blob/master/components/m
>>>>>>>>>>>>>>> l/org.wso2.carbon.ml.commons/src/main/java/org/wso2/carbon/m
>>>>>>>>>>>>>>> l/commons/domain/Workflow.java#L267
>>>>>>>>>>>>>>> https://github.com/zemoel/carbon-ml/blob/master/components/m
>>>>>>>>>>>>>>> l/org.wso2.carbon.ml.commons/src/main/java/org/wso2/carbon/m
>>>>>>>>>>>>>>> l/commons/domain/Workflow.java#L280
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> Best,
>>>>>>>>>>>>>>> Misgana
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> On 27.06.2016 08:53, Supun Sethunga wrote:
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> Hi Misgana,
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> Can you commit all the changes to your fork of carbon-ml,
>>>>>>>>>>>>>>> and share us the link. So that I can check whats happening.
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> Also, do I need to manually edit the machinelearner.xml
>>>>>>>>>>>>>>>> file(s) to include Stacking?
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> Yes. No need to add hyper-parameters, since we can't
>>>>>>>>>>>>>>> predefine them.
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> Thanks,
>>>>>>>>>>>>>>> Supun
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> On Mon, Jun 27, 2016 at 4:33 AM, Misgana Negassi <
>>>>>>>>>>>>>>> negassim@tf.uni-freiburg.de> wrote:
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> Hello Supun,
>>>>>>>>>>>>>>>> sorry to bother you again with the same problem but I am
>>>>>>>>>>>>>>>> not making any progress right now :(
>>>>>>>>>>>>>>>> I can't get the sample script running.
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> I tried two approaches:
>>>>>>>>>>>>>>>> A) Using the server provided and applying patches.
>>>>>>>>>>>>>>>> Problem: I can not apply my patch. I suspect the problem is
>>>>>>>>>>>>>>>> that my patch is of a newer version. The server's carbon ml is 1.1.1. and
>>>>>>>>>>>>>>>> mine is 1.1.2. Can I somewhere change the version number when I build my
>>>>>>>>>>>>>>>> project?
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> B) Building carbon and then product-ml and then unpacking
>>>>>>>>>>>>>>>> modules/distribution/target/wso2ml-2.0.0-SNAPSHOT.zip
>>>>>>>>>>>>>>>> I can start the server with the right components except for
>>>>>>>>>>>>>>>> one exception:
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> log4j:ERROR Could not instantiate appender named
>>>>>>>>>>>>>>>> "CARBON_MEMORY".
>>>>>>>>>>>>>>>> log4j:ERROR Could not instantiate class
>>>>>>>>>>>>>>>> [org.wso2.carbon.logging.servi
>>>>>>>>>>>>>>>> ce.appender.CarbonMemoryAppender].
>>>>>>>>>>>>>>>> java.lang.ClassNotFoundException:
>>>>>>>>>>>>>>>> org.wso2.carbon.logging.servic
>>>>>>>>>>>>>>>> e.appender.CarbonMemoryAppender cannot be found by
>>>>>>>>>>>>>>>> org.wso2.carbon.logging_4.4.3
>>>>>>>>>>>>>>>> at org.eclipse.osgi.internal.load
>>>>>>>>>>>>>>>> er.BundleLoader.findClassInternal(BundleLoader.java:501)
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> However, when I try to run my example script there seems to
>>>>>>>>>>>>>>>> be nothing happening on the server side. No exceptions but also the
>>>>>>>>>>>>>>>> debugger does not stop when I expect it would. It seems something is
>>>>>>>>>>>>>>>> crashing but the exceptions are swallowed. Is there a way to increase the
>>>>>>>>>>>>>>>> debug output?
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> Also, do I need to manually edit the machinelearner.xml
>>>>>>>>>>>>>>>> file(s) to include Stacking?
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> On 21.06.2016 05:41, Supun Sethunga wrote:
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> Hi Misgana,
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> I have two issues:
>>>>>>>>>>>>>>>> 1. Issue:
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> Exception in thread "pool-17-thread-7"
>>>>>>>>>>>>>>>>> java.lang.IllegalArgumentException: No enum constant
>>>>>>>>>>>>>>>>> org.wso2.carbon.ml.commons.con
>>>>>>>>>>>>>>>>> stants.MLConstants.SUPERVISED_ALGORITHM.STACKING
>>>>>>>>>>>>>>>>> at java.lang.Enum.valueOf(Enum.java:238)
>>>>>>>>>>>>>>>>> at org.wso2.carbon.ml.commons.con
>>>>>>>>>>>>>>>>> stants.MLConstants$SUPERVISED_
>>>>>>>>>>>>>>>>> ALGORITHM.valueOf(MLConstants.java:225)
>>>>>>>>>>>>>>>>> at org.wso2.carbon.ml.core.spark.
>>>>>>>>>>>>>>>>> algorithms.SupervisedSparkMode
>>>>>>>>>>>>>>>>> lBuilder.build(SupervisedSparkModelBuilder.java:158)
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> Which approach did you try? putting the jar as a patch
>>>>>>>>>>>>>>>> (patch9999)? or build the carbon-ml and product ml respectively? If it was
>>>>>>>>>>>>>>>> patching method, did you build org.wso2.carbon.ml.commons
>>>>>>>>>>>>>>>> as well?
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> Caused by: org.wso2.carbon.ml.database.ex
>>>>>>>>>>>>>>>>> ceptions.DatabaseHandlerException: An error occurred
>>>>>>>>>>>>>>>>> while inserting hyper parameter to the database: Value too long for column
>>>>>>>>>>>>>>>>> "VALUE VARCHAR(50)": "'rO0ABXNyABNqYXZhLnV0aWwuQXJy
>>>>>>>>>>>>>>>>> YXlMaXN0eIHSHZnHYZ0DAAFJAARzaX
>>>>>>>>>>>>>>>>> pleHAAAAACdwQAAAACc3IAEWphdmEu
>>>>>>>>>>>>>>>>> dXRpbC5IYXNoTWFwBQfawcMWYNEDAAJGAApsb2F... (372)"; SQL
>>>>>>>>>>>>>>>>> statement:
>>>>>>>>>>>>>>>>> INSERT INTO ML_HYPER_PARAMETER(ANALYSIS_ID,
>>>>>>>>>>>>>>>>> ALGORITHM_NAME, NAME, VALUE, LAST_MODIFIED_TIME) VALUES(?,?,?,?,
>>>>>>>>>>>>>>>>> CURRENT_TIMESTAMP()) [90005-140]
>>>>>>>>>>>>>>>>> The Logic is: The hyperparameters of base-algorithms are
>>>>>>>>>>>>>>>>> serialized and passed in the product-ml hyperparamters script file.This is
>>>>>>>>>>>>>>>>> a serialized string of List of Maps, where each map contains
>>>>>>>>>>>>>>>>> hyperparameters of each base-algorithm and will be deserialized in
>>>>>>>>>>>>>>>>> buildStackingModel() in SupervisedSparkModelBuilder and fed to Stacking
>>>>>>>>>>>>>>>>> train().
>>>>>>>>>>>>>>>>> Current idea to solve it is:
>>>>>>>>>>>>>>>>> 1. Increase column capacity more than VALUE VARCHAR(50)
>>>>>>>>>>>>>>>>> 2. Change serialization logic
>>>>>>>>>>>>>>>>> What do you think?
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> I believe we don't need to pass a serialized a map and put
>>>>>>>>>>>>>>>> the string in DB. Can we store the hyperparamerets as follows, in the
>>>>>>>>>>>>>>>> ML_HYPER_PARAMETER table?
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> *ANALYSIS_ID* *ALGORITHM_NAME* *NAME* *VALUE*
>>>>>>>>>>>>>>>> *LAST_MODIFIED_TIME*
>>>>>>>>>>>>>>>> 123 Meta_Algorithm_1 Learning Rate 0.001 <some_timestamp>
>>>>>>>>>>>>>>>> 123 Meta_Algorithm_1 Num_Trees 10 <some_timestamp>
>>>>>>>>>>>>>>>> 123 Meta_Algorithm_1 Max_Depth 0.001 <some_timestamp>
>>>>>>>>>>>>>>>> 123 Meta_Algorithm_1 Seed 4567 <some_timestamp>
>>>>>>>>>>>>>>>> 123 Meta_Algorithm_2 Learning Rate 0.001 <some_timestamp>
>>>>>>>>>>>>>>>> 123 Meta_Algorithm_2 Iterations 100 <some_timestamp>
>>>>>>>>>>>>>>>> 123 Meta_Algorithm_2 Seed 789 <some_timestamp>
>>>>>>>>>>>>>>>> … … …
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> ...
>>>>
>>>> [Message clipped]
>>>
>>>
>>>
>>>
>>> --
>>> *Supun Sethunga*
>>> Senior Software Engineer
>>> WSO2, Inc.
>>> http://wso2.com/
>>> lean | enterprise | middleware
>>> Mobile : +94 716546324
>>> Blog: http://supunsetunga.blogspot.com
>>>
>>>
>>>
>>
>>
>> --
>> *Supun Sethunga*
>> Senior Software Engineer
>> WSO2, Inc.
>> http://wso2.com/
>> lean | enterprise | middleware
>> Mobile : +94 716546324
>> Blog: http://supunsetunga.blogspot.com
>>
>
>
>
> --
> *Supun Sethunga*
> Senior Software Engineer
> WSO2, Inc.
> http://wso2.com/
> lean | enterprise | middleware
> Mobile : +94 716546324
> Blog: http://supunsetunga.blogspot.com
>
> _______________________________________________
> Dev mailing list
> Dev@wso2.org
> http://wso2.org/cgi-bin/mailman/listinfo/dev
>
>
--
Thanks & regards,
Nirmal
Team Lead - WSO2 Machine Learner
Associate Technical Lead - Data Technologies Team, WSO2 Inc.
Mobile: +94715779733
Blog: http://nirmalfdo.blogspot.com/
[Attachment #7 (text/html)]
<div dir="ltr">Congratulations Misgana!! Thanks for all the hard work and we look \
forward to work with you in future too. <div><br></div><div>All the very best \
!</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Aug 22, \
2016 at 9:32 AM, Supun Sethunga <span dir="ltr"><<a href="mailto:supuns@wso2.com" \
target="_blank">supuns@wso2.com</a>></span> wrote:<br><blockquote \
class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc \
solid;padding-left:1ex"><div dir="ltr">Hi Misgana,<div><br></div><div>I believe you \
have completed all the tasks. Please make sure you submit everything to GSoC on time \
:)</div><div><br></div><div>Regards,</div><div>Supun</div></div><div \
class="gmail_extra"><br><div class="gmail_quote">On Fri, Aug 19, 2016 at 9:17 AM, \
Supun Sethunga <span dir="ltr"><<a href="mailto:supuns@wso2.com" \
target="_blank">supuns@wso2.com</a>></span> wrote:<br><blockquote \
class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc \
solid;padding-left:1ex"><div dir="ltr">Hi,<div><br></div><div>High-level info should \
be enough...</div><div><br></div><div>Thanks,</div><div>Supun</div></div><div \
class="gmail_extra"><br><div class="gmail_quote"><div><div>On Thu, Aug 18, 2016 at \
5:57 PM, Misgana Negassi <span dir="ltr"><<a \
href="mailto:negassim@tf.uni-freiburg.de" \
target="_blank">negassim@tf.uni-freiburg.de</a>></span> \
wrote:<br></div></div><blockquote class="gmail_quote" style="margin:0 0 0 \
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div text="#000000" bgcolor="#FFFFFF"><div><div>
<p>Hi Supun,</p>
<p>I have a question about how technical the documentation should
be. Should I just explain high-level changes and how it is done,
or go deeper and talk about technical details such as which
functionality are added and/or changed and how?</p>
<p>Thank you!</p>
<p>Misgana<br>
</p>
<br>
<div>On 18.08.2016 12:03, Supun Sethunga
wrote:<br>
</div>
</div></div><blockquote type="cite"><div><div>
<div dir="ltr">Hi Misgana,
<div><br>
</div>
<div>Currently, your documentation [1] says "Performance
Comparison". I would suggest to make it the Final
Documentation for the project (rather than just the perf
comparison, but including those too). So you will have to add
a brief introduction to the project, the objectives, the
solution, and then finally the performance comparison. In that
doc, you can add the two PR's as references, for the solution
section. And you can then send the link of the documentation
for the final evaluation. Would that work?</div>
<div><br>
</div>
<div>[1] <a \
href="https://docs.google.com/document/d/1bpTMiSciOqt7vfDgYglSBQucQReDs-btEa5xFjBZkDU/edit" \
target="_blank">https://docs.google.com/do<wbr>cument/d/1bpTMiSciOqt7vfDgYglS<wbr>BQucQReDs-btEa5xFjBZkDU/edit</a></div>
<div><br>
</div>
<div>Regards,</div>
<div>Supun</div>
</div>
</div></div><div class="gmail_extra"><br>
<div class="gmail_quote"><div><div>On Thu, Aug 18, 2016 at 2:51 PM,
Misgana Negassi <span dir="ltr"><<a \
href="mailto:negassim@tf.uni-freiburg.de" \
target="_blank">negassim@tf.uni-freiburg.de</a>></span> wrote:<br>
</div></div><blockquote class="gmail_quote" style="margin:0 0 0 \
.8ex;border-left:1px #ccc solid;padding-left:1ex"> <div text="#000000" \
bgcolor="#FFFFFF"><div><div> <p>Dear Supun,</p>
<p>How would you suggest I send link of my work for final
evaluation since I contributed to two repositories? Do
you have any comments on my work before I publish the
link?</p>
<p>Thank you,</p>
<p>Misgana <br>
</p>
</div></div><div>
<div><div><div> <br>
<div>On 15.08.2016 18:01, Misgana Negassi wrote:<br>
</div>
</div></div><blockquote type="cite"><div><div>
<p>Hi Supun,</p>
<p>I updated the PR as per your comments. And also
updated the documentation.</p>
<p>I'm grateful for your feedback.<br>
</p>
<p>Thanks,</p>
<p>Misgana<br>
</p>
<br>
<div>On 15.08.2016 05:59, Supun Sethunga wrote:<br>
</div>
</div></div><blockquote type="cite"><div><div>
<div dir="ltr">Hi Misgana,
<div><br>
</div>
<div>Added couple of comments on the PR. Can you
please check them and update?</div>
<div>Also in the documentation, can you add some
brief description of the project, the
objectives, and the brief explanation about
your solution, apart from the accuracy
numbers?</div>
<div><br>
</div>
<div>Once you fix those, please share them both
in this thread.</div>
<div><br>
</div>
<div>Thanks,</div>
<div>Supun</div>
</div>
</div></div><div class="gmail_extra"><br>
<div class="gmail_quote"><div><div>On Mon, Aug 15, 2016 at
9:17 AM, Misgana Negassi <span dir="ltr"><<a \
href="mailto:negassim@tf.uni-freiburg.de" \
target="_blank">negassim@tf.uni-freiburg.de</a>></span> wrote:<br>
</div></div><blockquote class="gmail_quote" style="margin:0 \
0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div text="#000000" bgcolor="#FFFFFF"><div><div>
<div>
<div>
<div>Hi Supun,<br>
<br>
</div>
I have done all three tasks you
mentioned. I would be grateful for
your comments.<br>
<br>
</div>
Best,<br>
</div>
Misgana<br>
<br>
<div>On 10.08.2016 12:52, Supun Sethunga
wrote:<br>
</div>
</div></div><blockquote type="cite"><div><div>
<div dir="ltr">Hi Misgana,
<div><br>
</div>
<div>As the GSoC Pencil down
deadline is approaching, shall we
wrap things up by:</div>
<div>
<ul>
<li>Finishing and sharing the
final documentation (including
accuracy comparison and etc),</li>
<li>Cleaning-up / Formating the
code, <br>
</li>
<li>Sending git pull request(s) to
wso2/carbon-ml and
wso2/product-ml.</li>
</ul>
<div>Regards,</div>
</div>
<div>Supun</div>
</div>
</div></div><div class="gmail_extra"><br>
<div class="gmail_quote"><div><div>On Mon, Jul
25, 2016 at 9:24 AM, Supun Sethunga
<span dir="ltr"><<a \
href="mailto:supuns@wso2.com" target="_blank">supuns@wso2.com</a>></span> \
wrote:<br>
</div></div><blockquote class="gmail_quote" \
style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div> \
<div dir="ltr">Hi Misgana, <div><br>
</div>
<div>Thats great!</div>
<div><br>
</div>
<div><span>
<blockquote class="gmail_quote" \
style="margin:0px 0px 0px \
0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex"><span \
style="font-size:12.8px">[1] The data that was passed
to [2] was already
encoded so when passed
to the BasicEncoder, it
was considered as
unknown String and
defaulted to 0th
mapping. So, I decoded
the data before passing
it to getVectors()
method.</span></blockquote>
</span>Does that means, it
first decodes, before passing
into the method, and again
encodes inside that method? If
so, it's better to pass a flag
(boolean) to that <span \
style="font-size:12.8px">getVectors() method along with the data,
to indicate whether to
encode or not. That way you
can avoid unnecessary
decoding and encoding..</span></div>
<div><br>
</div>
<div>Yes, its OK to setup the
demo any day at 10AM IST.
Please invite Nirmal (cc'ed)
too.</div>
<div><br>
</div>
<div>Thanks,</div>
<div>Supun</div>
</div>
</div></div><div class="gmail_extra"><br>
<div class="gmail_quote"><div><div>
<div>
<div>On Sat, Jul 23, 2016 at
4:42 PM, Misgana Negassi <span \
dir="ltr"><<a href="mailto:negassim@tf.uni-freiburg.de" \
target="_blank">negassim@tf.uni-freiburg.de</a>></span> wrote:<br>
</div>
</div>
</div></div><blockquote class="gmail_quote" \
style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> <div>
<div>
<div text="#000000" \
bgcolor="#FFFFFF"><div><div> Hallo Supun,<br>
<br>
Sorry for the late
response.<br>
<br>
The issue with the
encoding values is
resolved. Please see
[1]. <br>
<br>
I am now cleaning up
code and preparing for
the presentation. As I
have mentioned in my
proposal, I am
attending a summer
school next week. If
the presentation will
be next week, would be
it be possible to do
it early 10AM IST, any
day of the week except
Wednesday? If not, the
other week. Are the
aforementioned
appointments ok?<br>
<br>
Thank you!<br>
Misgana<br>
<br>
<br>
[1] The data that was
passed to [2] was
already encoded so
when passed to the
BasicEncoder, it was
considered as unknown
String and defaulted
to 0th mapping. So, I
decoded the data
before passing it to
getVectors() method.<br>
<div><br>
</div>
<div>[2] <a \
href="https://github.com/zemoel/carbon-ml/blob/master/components/ml/org.wso2.carbon.ml.core/src/main/java/org/wso2/carbon/ml/core/impl/Predictor.java#L313" \
target="_blank">https://github.com/zemoel/<wbr>carbon-ml/blob/master/componen<wbr>ts/m \
l/org.wso2.carbon.ml.core/<wbr>src/main/java/org/wso2/carbon/<wbr>ml/core/impl/Predictor.java#L3<wbr>13</a></div>
</div></div><div>
<div><div><div> <br>
<br>
<br>
<br>
<div>On 20.07.2016
06:43, Supun
Sethunga wrote:<br>
</div>
</div></div><blockquote \
type="cite"><div><div> <div dir="ltr">Hi,
<div><br>
</div>
<div>Can you
remote debug
and see what
are the
encoding
values you get
at [1] ?</div>
<div><br>
</div>
<div>[1] <a \
href="https://github.com/zemoel/carbon-ml/blob/master/components/ml/org.wso2.carbon.ml.core/src/main/java/org/wso2/carbon/ml/core/impl/Predictor.java#L313" \
target="_blank">https://github.com/zemoel/<wbr>carbon-ml/blob/master/componen<wbr>ts/m \
l/org.wso2.carbon.ml.core/<wbr>src/main/java/org/wso2/carbon/<wbr>ml/core/impl/Predictor.java#L3<wbr>13</a></div>
</div>
</div></div><div \
class="gmail_extra"><br>
<div \
class="gmail_quote"><div><div>On Tue, Jul 19,
2016 at 9:11
PM, Misgana
Negassi <span \
dir="ltr"><<a href="mailto:negassim@tf.uni-freiburg.de" \
target="_blank">negassim@tf.uni-freiburg.de</a>></span> wrote:<br>
</div></div><blockquote \
class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc \
solid;padding-left:1ex">
<div text="#000000" \
bgcolor="#FFFFFF"><div><div> Hi Supun, <br> <br>
I can track
the weird
results down
to the
encodings.
Here [1] it
encodes the
test dataset
to all zeros
excluding the
first column.<br>
Do you have
time in the
next days for
a hangout
session to
help me on
this issue?<br>
<br>
Thanks!<br>
Misgana<br>
<br>
[1] <a \
href="https://github.com/zemoel/carbon-ml/blob/master/components/ml/org.wso2.carbon.ml.core/src/main/java/org/wso2/carbon/ml/core/impl/Predictor.java#L75" \
target="_blank">https://github.com/zemoel/carb<wbr>on-ml/blob/master/components/m<wbr> \
l/org.wso2.carbon.ml.core/src/<wbr>main/java/org/wso2/carbon/ml/c<wbr>ore/impl/Predictor.java#L75</a><br>
<br>
<br>
<div>On
15.07.2016
10:34, Misgana
Negassi wrote:<br>
</div>
</div></div><blockquote \
type="cite"><div><div> Hi Supun,<br>
<br>
sorry it was
not a clear
question.
Actually,
after working
on it more, I
found out the
problem lies
when we set
the attributes
for the
mlmodel in
BaseModelBuilder
eg.
includedFeatures,
encodings and
responseIndex.
I used to get
it from the
workflow which
is not
compatible to
the
levelOneDataset.
<br>
<br>
Currently I am
trying to
understand
what these are
and how I can
populate them
to be
compatible to
LevelOneDataset. <br>
My idea is to
create helper
method to
setFeatures(name,
ImputeOption,
..) and get
them, and
create an
empty map for
encodings. For
responseIndex,
I dont have
idea yet.<br>
<br>
Can you give
me a hint?<br>
Thanks,<br>
Misgana<br>
<br>
<div>On
15.07.2016
05:57, Supun
Sethunga
wrote:<br>
</div>
</div></div><blockquote \
type="cite"><div><div>
<div dir="ltr">Hi,
<div><br>
</div>
<div>Sorry I
didn't get the
question. can
you explain it
a bit?</div>
<div><br>
</div>
<div>Thanks,</div>
<div>Supun </div>
</div>
</div></div><div \
class="gmail_extra"><br>
<div \
class="gmail_quote"><div><div>On Thu, Jul 14,
2016 at 6:22
PM, Misgana
Negassi <span \
dir="ltr"><<a href="mailto:negassim@tf.uni-freiburg.de" \
target="_blank">negassim@tf.uni-freiburg.de</a>></span> wrote:<br>
</div></div><blockquote \
class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc \
solid;padding-left:1ex">
<div text="#000000" \
bgcolor="#FFFFFF"><div><div> Hi Supun,<br> <br>
I have a
question
regarding the
issue with the
Stacking
LevelOneDataset.<br>
I envoke
sparkContext
parallelize
method to get
JavaRDD<LabeledPoint>. But here is what I get:<br>
LevelOneDataset : ParallelCollectionRDD at parallelize . Do we expect
rather
MapPartitionRDD
at
randomSplit?
If so, can you
give me a hint
how to
cast/get it?<br>
<br>
Best,<br>
Misgana<br>
<br>
<br>
<div>On
14.07.2016
08:58, Supun
Sethunga
wrote:<br>
</div>
</div></div><blockquote \
type="cite"><div><div>
<div dir="ltr">Hi
Misgana,
<div><br>
</div>
<div>That is
great! Keep it
up!</div>
<div>Yes,
let's try to
solve all the
issues of the
existing
methods first,
before moving
on to the
other one.
Also do not
worry about
the accuracy,
because it can
be increased
by tuning the
hyper-parameters, which is up to the user.. :)</div>
<div><br>
</div>
<div>Once you
solve the
current
issues, can
you setup a
small demo
with the ML
team, to show
how the two
methods
work from end
to end, to
some sample
dataset?</div>
<div><br>
</div>
<div>Regards,</div>
<div>Supun</div>
</div>
</div></div><div \
class="gmail_extra"><br>
<div \
class="gmail_quote"><div><div>On Thu, Jul 14,
2016 at 11:55
AM, Misgana
Negassi <span \
dir="ltr"><<a href="mailto:negassim@tf.uni-freiburg.de" \
target="_blank">negassim@tf.uni-freiburg.de</a>></span> wrote:<br>
</div></div><blockquote \
class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc \
solid;padding-left:1ex">
<div text="#000000" \
bgcolor="#FFFFFF"><div><div> Hi Supun,<br> <br>
This is what I
have done:<br>
1. Stacking<br>
Issue with
getting the
Hyperparameters
in a Map of
Maps is
resolved now.
Basically
Stacking is
implemented
end-to-end. I
am now
tackling a
error which
arises while
training the
Metamodel. My
hypothesis is
that the
problem lies
while stacking
the
predictions to
form the
levelOneDataset.<br>
<br>
2. Bagging<br>
Bagging is
also
implemented
end-to-end.
But the
accuracy is
low: 67.5%. I
am trying to
figure out
where the
problem lies.<br>
<br>
I have
commited my
latest code.
Once I am done
with those
Issues, I will
implement
Boosting.<br>
<br>
Best,<br>
Misgana
</div></div><div>
<div><div><div><br>
<br>
<br>
<br>
<div>On
14.07.2016
07:03, Supun
Sethunga
wrote:<br>
</div>
</div></div><blockquote \
type="cite"><div><div>
<div dir="ltr">Hi,
<div><br>
</div>
<div>Can you
please give us
a brief update
on the current
status?</div>
<div><br>
</div>
<div>Thanks,</div>
<div>Supun</div>
</div>
</div></div><div \
class="gmail_extra"><br>
<div \
class="gmail_quote"><div><div>On Wed, Jul 6,
2016 at 9:41
AM, Supun
Sethunga <span \
dir="ltr"><<a href="mailto:supuns@wso2.com" \
target="_blank">supuns@wso2.com</a>></span> wrote:<br>
</div></div><blockquote \
class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc \
solid;padding-left:1ex"><div><div>
<div dir="ltr">Hi
Misgana,
<div><br>
</div>
<div>Can you
give us a
brief update?</div>
<div><br>
</div>
<div>Thanks,</div>
<div>Supun</div>
</div>
</div></div><div>
<div>
<div \
class="gmail_extra"><br>
<div \
class="gmail_quote"><div><div>On Fri, Jul 1,
2016 at 12:40
PM, Supun
Sethunga <span \
dir="ltr"><<a href="mailto:supuns@wso2.com" \
target="_blank">supuns@wso2.com</a>></span> wrote:<br>
</div></div><blockquote \
class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc \
solid;padding-left:1ex"><div><div> <div dir="ltr">
<div>Hi,</div>
<span>
<div> </div>
<blockquote \
class="gmail_quote" style="margin:0px 0px 0px \
0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex"><span \
style="font-size:12.8px">Also, the server I am using is the one created from \
building the product-ml
and then
unpacking
\
modules/distribution/target/</span><span \
style="font-size:12.8px">ws<wbr>o2ml-2.0.0-SNAPSHOT.zip. The server I downloaded
from WSO2
website and
patches still
doesn't
recognize my
\
changes.</span></blockquote> <div><br>
</div>
</span>
<div>Does your
changes take
effect in the
pack built
from source?
if so, please
proceed with
it. </div>
</div>
</div></div><div>
<div>
<div \
class="gmail_extra"><br>
<div \
class="gmail_quote"><div><div>On Thu, Jun 30,
2016 at 6:13
PM, Misgana
Negassi <span \
dir="ltr"><<a href="mailto:negassim@tf.uni-freiburg.de" \
target="_blank">negassim@tf.uni-freiburg.de</a>></span> wrote:<br>
</div></div><blockquote \
class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc \
solid;padding-left:1ex">
<div text="#000000" \
bgcolor="#FFFFFF"><div><div> Hi Supun,<br> <br>
Thank you for
pointing out
the missing
comma in
h2.script has
solved the
problem while
creating the
hyper-parameters
table. <br>
<br>
I have now
included
algorithmName
as second
hyperparameter
and trying to
debug the
NullPointerException.
I am currently
trying to
retrace my
steps and see
of any logical
flaw in
creating the <br>
Map<String,
Map<String,
String>>
Hyperparameters.<br>
<br>
Also, the
server I am
using is the
one created
from building
the product-ml
and then
unpacking
\
modules/distribution/target/ws<wbr>o2ml-2.0.0-SNAPSHOT.zip. The server I
downloaded
from WSO2
website and
patches still
doesn't
recognize my
changes.<br>
<br>
Best,<br>
Misgana
</div></div><div>
<div><div><div><br>
<br>
<br>
<br>
<br>
<div>On
30.06.2016
08:16, Supun
Sethunga
wrote:<br>
</div>
</div></div><blockquote \
type="cite"><div><div>
<div dir="ltr">Hi
Misgana,
<div><br>
</div>
<div>I tried
to run you
script with
your forks of
carbon-ml [1]
and product-ml
[2], but
noticed
several
issues.</div>
<div>
<ol>
<li>There are
some issues in
the
model-generation.sh.
(A whitespace
at [3]. "./jq"
should be
"jq").</li>
<li>There's a
typo in the
h2.sql script
[4] (missing
comma), hence
the DB table
is not getting
created. So
any step
beyond
creating
hyper-parameters
aren't
working.</li>
<li>In the SQL
statement [5],
you are
setting only
one parameter,
while the
prepared
statement
expect two
parameters.</li>
</ol>
<div>Can you
fix those
please? </div>
</div>
<div>Are the
two repos
different from
your working
copy?</div>
<div><br>
</div>
<div>[1] <a \
href="https://github.com/zemoel/carbon-ml" \
target="_blank">https://github.com/zemoel/<wbr>carbon-ml</a></div> <div>[2] <a \
href="https://github.com/zemoel/product-ml" \
target="_blank">https://github.com/zemoel/<wbr>product-ml</a></div> <div>[3] <a \
href="https://github.com/zemoel/product-ml/blob/master/modules/samples/tuned/stacking/model-generation.sh#L60" \
target="_blank">https://github.com/zemoel/<wbr>product-ml/blob/master/modules<wbr>/samples/tuned/stacking/model-<wbr>generation.sh#L60</a></div>
<div>[4] <a href="https://github.com/zemoel/carbon-ml/blob/master/features/ml/org.wso2.carbon.ml.database.feature/src/main/resources/dbscripts/h2.sql#L152" \
target="_blank">https://github.com/zemoel/<wbr>carbon-ml/blob/master/features<wbr>/ml/ \
org.wso2.carbon.ml.databas<wbr>e.feature/src/main/resources/d<wbr>bscripts/h2.sql#L152</a></div>
<div>[5] <a href="https://github.com/zemoel/carbon-ml/blob/master/components/ml/org \
.wso2.carbon.ml.database/src/main/java/org/wso2/carbon/ml/database/internal/MLDatabaseService.java#L2183" \
target="_blank">https://github.com/zemoel/<wbr>carbon-ml/blob/master/componen<wbr>ts/m \
l/org.wso2.carbon.ml.datab<wbr>ase/src/main/java/org/wso2/car<wbr>bon/ml/database/internal/MLDat<wbr>abaseService.java#L2183</a></div>
<div><br>
</div>
<div>Regards,</div>
<div>Supun</div>
</div>
</div></div><div \
class="gmail_extra"><br>
<div \
class="gmail_quote"><div><div>On Wed, Jun 29,
2016 at 6:52
PM, Misgana
Negassi <span \
dir="ltr"><<a href="mailto:negassim@tf.uni-freiburg.de" \
target="_blank">negassim@tf.uni-freiburg.de</a>></span> wrote:<br>
</div></div><blockquote \
class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc \
solid;padding-left:1ex">
<div text="#000000" \
bgcolor="#FFFFFF"><div><div> Hi Supun,<br> I logged into
the server
using UI. As
you can see
from the
screenshot
below, the
installed
features are
of the
previous
version of
server. Do you
think, this
could be the
problem?<img \
alt="screenshot" src="cid:part21.BB6A07D7.D85B9C3E@tf.uni-freiburg.de" width="586" \
height="144"><br> <br>
Best,<br>
Misgana
</div></div><div>
<div><div><div><br>
<br>
<div>On
29.06.2016
08:06, Supun
Sethunga
wrote:<br>
</div>
</div></div><blockquote \
type="cite"><div><div>
<div dir="ltr">Hi,
<div><br>
</div>
<div>I will
check and let
you know</div>
<div><br>
</div>
<div>Regards,</div>
<div>Supun</div>
</div>
</div></div><div \
class="gmail_extra"><br>
<div \
class="gmail_quote"><div><div>On Tue, Jun 28,
2016 at 5:33
AM, Misgana
Negassi <span \
dir="ltr"><<a href="mailto:negassim@tf.uni-freiburg.de" \
target="_blank">negassim@tf.uni-freiburg.de</a>></span> wrote:<br>
</div></div><blockquote \
class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc \
solid;padding-left:1ex">
<div text="#000000" \
bgcolor="#FFFFFF"><div><div> Hi Supun,<br> <br>
These are the
links for the
code I
changed.<br>
<br>
<a \
href="https://github.com/zemoel/carbon-ml/blob/master/components/ml/org.wso2.carbon.ml.database/src/main/java/org/wso2/carbon/ml/database/DatabaseService.java#L422" \
target="_blank">https://github.com/zemoel/carb<wbr>on-ml/blob/master/components/m<wbr> \
l/org.wso2.carbon.ml.database/<wbr>src/main/java/org/wso2/carbon/<wbr>ml/database/DatabaseService.ja<wbr>va#L422</a><br>
<a href="https://github.com/zemoel/carbon-ml/blob/master/components/ml/org.wso2.carb \
on.ml.database/src/main/java/org/wso2/carbon/ml/database/internal/MLDatabaseService.java#L2173" \
target="_blank">https://github.com/zemoel/carb<wbr>on-ml/blob/master/components/m<wbr> \
l/org.wso2.carbon.ml.database/<wbr>src/main/java/org/wso2/carbon/<wbr>ml/database/internal/MLDatabas<wbr>eService.java#L2173</a><br>
<a href="https://github.com/zemoel/carbon-ml/blob/master/components/ml/org.wso2.carb \
on.ml.database/src/main/java/org/wso2/carbon/ml/database/internal/MLDatabaseService.java#L2506" \
target="_blank">https://github.com/zemoel/carb<wbr>on-ml/blob/master/components/m<wbr> \
l/org.wso2.carbon.ml.database/<wbr>src/main/java/org/wso2/carbon/<wbr>ml/database/internal/MLDatabas<wbr>eService.java#L2506</a><br>
<a href="https://github.com/zemoel/carbon-ml/blob/master/components/ml/org.wso2.carb \
on.ml.commons/src/main/java/org/wso2/carbon/ml/commons/domain/Workflow.java#L267" \
target="_blank">https://github.com/zemoel/carb<wbr>on-ml/blob/master/components/m<wbr> \
l/org.wso2.carbon.ml.commons/s<wbr>rc/main/java/org/wso2/carbon/m<wbr>l/commons/domain/Workflow.java<wbr>#L267</a><br>
<a href="https://github.com/zemoel/carbon-ml/blob/master/components/ml/org.wso2.carb \
on.ml.commons/src/main/java/org/wso2/carbon/ml/commons/domain/Workflow.java#L280" \
target="_blank">https://github.com/zemoel/carb<wbr>on-ml/blob/master/components/m<wbr> \
l/org.wso2.carbon.ml.commons/s<wbr>rc/main/java/org/wso2/carbon/m<wbr>l/commons/domain/Workflow.java<wbr>#L280</a><br>
<br>
Best,<br>
Misgana
</div></div><div>
<div><div><div><br>
<br>
<div>On
27.06.2016
08:53, Supun
Sethunga
wrote:<br>
</div>
</div></div><blockquote \
type="cite"><div><div>
<div dir="ltr">Hi
Misgana,
<div><br>
</div>
<div>Can you
commit all the
changes to
your fork of
carbon-ml, and
share us the
link. So that
I can check
whats
happening.</div>
<div><br>
</div>
<blockquote \
class="gmail_quote" style="margin:0px 0px 0px \
0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex"><span \
style="font-size:12.8px">Also, do I need to manually edit the
machinelearner.xml
file(s) to
include
\
Stacking?</span></blockquote> <div>Yes. No
need to add
hyper-parameters,
since we can't
predefine
them.</div>
<div><br>
</div>
<div>Thanks,</div>
<div>Supun </div>
</div>
</div></div><div \
class="gmail_extra"><br>
<div \
class="gmail_quote"><div><div>On Mon, Jun 27,
2016 at 4:33
AM, Misgana
Negassi <span \
dir="ltr"><<a href="mailto:negassim@tf.uni-freiburg.de" \
target="_blank">negassim@tf.uni-freiburg.de</a>></span> wrote:<br>
</div></div><blockquote \
class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc \
solid;padding-left:1ex">
<div text="#000000" \
bgcolor="#FFFFFF"><div><div> Hello Supun,<br> sorry to
bother you
again with the
same problem
but I am not
making any
progress right
now :(<br>
I can't get
the sample
script
running.<br>
<br>
I tried two
approaches:<br>
A) Using the
server
provided and
applying
patches.<br>
Problem: I can
not apply my
patch. I
suspect the
problem is
that my patch
is of a newer
version. The
server's
carbon ml is
1.1.1. and
mine is 1.1.2.
Can I
somewhere
change the
version number
when I build
my project?<br>
<br>
B) Building
carbon and
then
product-ml and
then unpacking
modules/distribution/target/ws<wbr>o2ml-2.0.0-SNAPSHOT.zip<br>
I can start
the server
with the right
components
except for one
exception:<br>
<br>
log4j:ERROR
Could not
instantiate
appender named
"CARBON_MEMORY".<br>
log4j:ERROR
Could not
instantiate
class
\
[org.wso2.carbon.logging.servi<wbr>ce.appender.CarbonMemoryAppend<wbr>er].<br> \
java.lang.ClassNotFoundExcepti<wbr>on: \
org.wso2.carbon.logging.servic<wbr>e.appender.CarbonMemoryAppende<wbr>r cannot be
found by
\
org.wso2.carbon.logging_4.4.3<br> at
org.eclipse.osgi.internal.load<wbr>er.BundleLoader.findClassInter<wbr>nal(BundleLoader.java:501)<br>
<br>
<br>
However, when
I try to run
my example
script there
seems to be
nothing
happening on
the server
side. No
exceptions but
also the
debugger does
not stop when
I expect it
would. It
seems
something is
crashing but
the exceptions
are swallowed.
Is there a way
to increase
the debug
output?<br>
<br>
Also, do I
need to
manually edit
the
machinelearner.xml
file(s) to
include
Stacking?
</div></div><div>
<div><div><div><br>
<br>
<div>On
21.06.2016
05:41, Supun
Sethunga
wrote:<br>
</div>
</div></div><blockquote \
type="cite">
<div dir="ltr"><div><div>Hi
Misgana,
<div><br>
</div>
<div><span \
style="font-size:12.8px">I have two
issues:</span><br \
style="font-size:12.8px">
<span \
style="font-size:12.8px">1.
Issue:</span><br \
style="font-size:12.8px">
<br \
style="font-size:12.8px"> <blockquote class="gmail_quote" style="margin:0px 0px 0px \
0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex"><span \
style="font-size:12.8px">Exception in thread \
"pool-17-thread-7"
\
java.lang.IllegalArgumentExcep</span><span style="font-size:12.8px"><wbr>tion: No \
enum constant org.wso2.carbon.ml.commons.con</span><span \
style="font-size:12.8px"><wbr>stants.MLConstants.SUPERVISED_</span><span \
style="font-size:12.8px"><wbr>ALGORITHM.STACKING<br>
</span><span \
style="font-size:12.8px"> at
\
java.lang.Enum.valueOf(Enum.ja</span><span \
style="font-size:12.8px"><wbr>va:238)<br>
</span><span \
style="font-size:12.8px"> at
\
org.wso2.carbon.ml.commons.con</span><span \
style="font-size:12.8px"><wbr>stants.MLConstants$SUPERVISED_</span><span \
style="font-size:12.8px"><wbr>ALGORITHM.valueOf(MLConstants.</span><span \
style="font-size:12.8px"><wbr>java:225)<br>
</span><span \
style="font-size:12.8px"> at
\
org.wso2.carbon.ml.core.spark.</span><span \
style="font-size:12.8px"><wbr>algorithms.SupervisedSparkMode</span><span \
style="font-size:12.8px"><wbr>lBuilder.build(SupervisedSpark</span><span \
style="font-size:12.8px"><wbr>ModelBuilder.java:158)</span></blockquote> </div>
<div><span \
style="font-size:12.8px">Which approach did
you try?
putting the
jar as a patch
(patch9999)?
or build the
carbon-ml and
product ml
respectively?
If it was
patching
method, did
you build <a \
href="http://org.wso2.carbon.ml" \
target="_blank">org.wso2.carbon.ml</a>.commo<wbr>ns
as well?</span></div>
</div></div><div><div><div>
<div><br>
</div>
<blockquote \
class="gmail_quote" style="margin:0px 0px 0px \
0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex"><span \
style="font-size:12.8px">Caused by: org.wso2.carbon.ml.database.ex</span><span \
style="font-size:12.8px"><wbr>ceptions.DatabaseHandlerExcept</span><span \
style="font-size:12.8px"><wbr>ion: An error occurred while inserting hyper
parameter to
the database:
Value too long
for column
"VALUE
VARCHAR(50)":
"'rO0ABXNyABNqYXZhLnV0aWwuQXJy</span><span \
style="font-size:12.8px"><wbr>YXlMaXN0eIHSHZnHYZ0DAAFJAARzaX</span><span \
style="font-size:12.8px"><wbr>pleHAAAAACdwQAAAACc3IAEWphdmEu</span><span \
style="font-size:12.8px"><wbr>dXRpbC5IYXNoTWFwBQfawcMWYNEDAA</span><span \
style="font-size:12.8px"><wbr>JGAApsb2F... (372)"; SQL \
statement:<br>
</span><span \
style="font-size:12.8px">INSERT INTO
\
ML_HYPER_PARAMETER(ANALYSIS_ID</span><span style="font-size:12.8px"><wbr>, \
ALGORITHM_NAME, NAME, VALUE,
LAST_MODIFIED_TIME)
VALUES(?,?,?,?, CURRENT_TIMESTAMP()) [90005-140]</span><br style="font-size:12.8px">
<span \
style="font-size:12.8px">The Logic is: The
hyperparameters of base-algorithms are serialized and passed in the
product-ml
hyperparamters
script
file.This is a
serialized
string of List
of Maps, where
each map
contains
hyperparameters
of each
base-algorithm
and will be
deserialized
in
buildStackingModel()
in
SupervisedSparkModelBuilder
and fed to
Stacking
train().</span><br \
style="font-size:12.8px">
<span \
style="font-size:12.8px">Current idea to solve
it is:<br>
</span><span \
style="font-size:12.8px"> 1. Increase
column
capacity more
than VALUE
VARCHAR(50)<br>
</span><span \
style="font-size:12.8px"> 2. Change
serialization
logic</span><br \
style="font-size:12.8px">
<span \
style="font-size:12.8px">What
do you \
think?</span></blockquote> <div><br>
</div>
<div>I believe
we don't need
to pass a
serialized a
map and put
the string in
DB. Can we
store the
hyperparamerets as
follows, in
the
ML_HYPER_PARAMETER
table?</div>
<div><br>
</div>
</div></div><div>
<table border="0" \
cellspacing="0">
<colgroup \
width="118"></colgroup>
<colgroup \
width="164"></colgroup>
<colgroup \
width="112"></colgroup>
<colgroup \
width="85"></colgroup>
<colgroup \
width="155"></colgroup> <tbody>
<tr>
<td style="border:1px solid \
rgb(0,0,0)" align="center" height="17"><b>ANALYSIS_ID</b></td>
<td style="border:1px solid \
rgb(0,0,0)" align="center"><b>ALGORITHM_NAME</b></td>
<td style="border:1px solid \
rgb(0,0,0)" align="center"><b>NAME</b></td>
<td style="border:1px solid \
rgb(0,0,0)" align="center"><b>VALUE</b></td>
<td style="border:1px solid \
rgb(0,0,0)" align="center"><b>LAST_MODIFIED_TIME</b></td> </tr>
<tr>
<td style="border:1px solid \
rgb(0,0,0)" align="center" height="17">123</td>
<td style="border:1px solid \
rgb(0,0,0)" align="center">Meta_Algorithm_1</td>
<td style="border:1px solid \
rgb(0,0,0)" align="center">Learning Rate</td>
<td style="border:1px solid \
rgb(0,0,0)" align="center">0.001</td>
<td style="border:1px solid \
rgb(0,0,0)" align="center"><some_timestamp></td> </tr>
<tr>
<td style="border:1px solid \
rgb(0,0,0)" align="center" height="17">123</td>
<td style="border:1px solid \
rgb(0,0,0)" align="center">Meta_Algorithm_1</td>
<td style="border:1px solid \
rgb(0,0,0)" align="center">Num_Trees</td>
<td style="border:1px solid \
rgb(0,0,0)" align="center">10</td>
<td style="border:1px solid \
rgb(0,0,0)" align="center"><some_timestamp></td> </tr>
<tr>
<td style="border:1px solid \
rgb(0,0,0)" align="center" height="17">123</td>
<td style="border:1px solid \
rgb(0,0,0)" align="center">Meta_Algorithm_1</td>
<td style="border:1px solid \
rgb(0,0,0)" align="center">Max_Depth</td>
<td style="border:1px solid \
rgb(0,0,0)" align="center">0.001</td>
<td style="border:1px solid \
rgb(0,0,0)" align="center"><some_timestamp></td> </tr>
<tr>
<td style="border:1px solid \
rgb(0,0,0)" align="center" height="17">123</td>
<td style="border:1px solid \
rgb(0,0,0)" align="center">Meta_Algorithm_1</td>
<td style="border:1px solid \
rgb(0,0,0)" align="center">Seed</td>
<td style="border:1px solid \
rgb(0,0,0)" align="center">4567</td>
<td style="border:1px solid \
rgb(0,0,0)" align="center"><some_timestamp></td> </tr>
<tr>
<td style="border:1px solid \
rgb(0,0,0)" align="center" height="17">123</td>
<td style="border:1px solid \
rgb(0,0,0)" align="center">Meta_Algorithm_2</td>
<td style="border:1px solid \
rgb(0,0,0)" align="center">Learning Rate</td>
<td style="border:1px solid \
rgb(0,0,0)" align="center">0.001</td>
<td style="border:1px solid \
rgb(0,0,0)" align="center"><some_timestamp></td> </tr>
<tr>
<td style="border:1px solid \
rgb(0,0,0)" align="center" height="17">123</td>
<td style="border:1px solid \
rgb(0,0,0)" align="center">Meta_Algorithm_2</td>
<td style="border:1px solid \
rgb(0,0,0)" align="center">Iterations</td>
<td style="border:1px solid \
rgb(0,0,0)" align="center">100</td>
<td style="border:1px solid \
rgb(0,0,0)" align="center"><some_timestamp></td> </tr>
<tr>
<td style="border:1px solid \
rgb(0,0,0)" align="center" height="17">123</td>
<td style="border:1px solid \
rgb(0,0,0)" align="center">Meta_Algorithm_2</td>
<td style="border:1px solid \
rgb(0,0,0)" align="center">Seed</td>
<td style="border:1px solid \
rgb(0,0,0)" align="center">789</td>
<td style="border:1px solid \
rgb(0,0,0)" align="center"><some_timestamp></td> </tr>
<tr>
<td style="border:1px solid \
rgb(0,0,0)" align="center" height="17">…</td>
<td style="border:1px solid \
rgb(0,0,0)" align="center">…</td>
<td style="border:1px solid \
rgb(0,0,0)" align="center">…</td> </tr>
</tbody>
</table>
</div>
</div>
</div>
</blockquote>
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</blockquote>
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</blockquote>
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...<br>
<br>
[Message clipped] </blockquote>
</div><div><div>
<br>
<br clear="all"><span><font color="#888888">
<div><br>
</div>
-- <br>
<div data-smartmail="gmail_signature">
<div dir="ltr">
<div>
<div dir="ltr">
<div>
<div dir="ltr">
<div>
<div dir="ltr">
<div>
<div dir="ltr">
<div>
<div dir="ltr">
<div>
<div dir="ltr"><b><font size="1" face="verdana, \
sans-serif">Supun Sethunga</font></b>
<div><font size="1" face="verdana,
sans-serif">Senior Software
Engineer<br>
</font></div>
<div><font size="1" face="verdana,
sans-serif">WSO2, Inc.</font></div>
<div><font size="1" face="verdana,
sans-serif"><a href="http://wso2.com/" \
target="_blank">http://wso2.com/</a><br> </font></div>
<div><font size="1" face="verdana,
sans-serif">lean | enterprise |
middleware</font></div>
<div><font size="1" face="verdana,
sans-serif">Mobile : +94
716546324</font></div>
<div><font size="1" face="verdana,
sans-serif">Blog: <a \
href="http://supunsetunga.blogspot.com" \
target="_blank">http://supunsetunga.blog<wbr>spot.com</a></font></div> </div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</font></span></div></div></div>
</blockquote>
<br>
</div>
</blockquote></div><div><div><br><br clear="all"><span class="HOEnZb"><font \
color="#888888"><div><br></div>-- <br><div data-smartmail="gmail_signature"><div \
dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div \
dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><b><font face="verdana, sans-serif" \
size="1">Supun Sethunga</font></b><div><font face="verdana, sans-serif" \
size="1">Senior Software Engineer<br></font></div><div><font face="verdana, \
sans-serif" size="1">WSO2, Inc.</font></div><div><font face="verdana, sans-serif" \
size="1"><a href="http://wso2.com/" \
target="_blank">http://wso2.com/</a><br></font></div><div><font face="verdana, \
sans-serif" size="1">lean | enterprise | middleware</font></div><div><font \
face="verdana, sans-serif" size="1">Mobile : <a href="tel:%2B94%20716546324" \
value="+94716546324" target="_blank">+94 716546324</a></font></div><div><font \
face="verdana, sans-serif" size="1">Blog: <a href="http://supunsetunga.blogspot.com" \
target="_blank">http://supunsetunga.blog<wbr>spot.com</a></font></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div>
</font></span></div></div></div><span class="HOEnZb"><font color="#888888">
</font></span></blockquote></div><span class="HOEnZb"><font color="#888888"><br><br \
clear="all"><div><br></div>-- <br><div data-smartmail="gmail_signature"><div \
dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div \
dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><b><font face="verdana, sans-serif" \
size="1">Supun Sethunga</font></b><div><font face="verdana, sans-serif" \
size="1">Senior Software Engineer<br></font></div><div><font face="verdana, \
sans-serif" size="1">WSO2, Inc.</font></div><div><font face="verdana, sans-serif" \
size="1"><a href="http://wso2.com/" \
target="_blank">http://wso2.com/</a><br></font></div><div><font face="verdana, \
sans-serif" size="1">lean | enterprise | middleware</font></div><div><font \
face="verdana, sans-serif" size="1">Mobile : <a href="tel:%2B94%20716546324" \
value="+94716546324" target="_blank">+94 716546324</a></font></div><div><font \
face="verdana, sans-serif" size="1">Blog: <a href="http://supunsetunga.blogspot.com" \
target="_blank">http://supunsetunga.<wbr>blogspot.com</a></font></div></div></div></div></div></div></div></div></div></div></div></div></div></div></div>
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dir="ltr"><div><div dir="ltr"><br>Thanks & regards,<br>Nirmal<br><br>Team Lead - \
WSO2 Machine Learner<br>Associate Technical Lead - Data Technologies Team, WSO2 \
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