[jira] [Commented] (SPARK-8547) xgboost exploration

[ https://issues.apache.org/jira/browse/SPARK-8547?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=14986288#comment-14986288 ] Meihua Wu commented on SPARK-8547: -- I have created a Spark Package to implement the XGBoost algorithm.

[jira] [Commented] (SPARK-7129) Add generic boosting algorithm to spark.ml

[ https://issues.apache.org/jira/browse/SPARK-7129?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=14942971#comment-14942971 ] Meihua Wu commented on SPARK-7129: -- Currently I am not aware of a straightforward way to impose the weak

[jira] [Commented] (SPARK-9478) Add class weights to Random Forest

[ https://issues.apache.org/jira/browse/SPARK-9478?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=14942754#comment-14942754 ] Meihua Wu commented on SPARK-9478: -- [~pcrenshaw] Are you working on this? If not, I can send a PR based

[jira] [Commented] (SPARK-7129) Add generic boosting algorithm to spark.ml

[ https://issues.apache.org/jira/browse/SPARK-7129?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=14909512#comment-14909512 ] Meihua Wu commented on SPARK-7129: -- [~sethah] Thank you for your comments! I have updated the design doc

[jira] [Commented] (SPARK-7129) Add generic boosting algorithm to spark.ml

[ https://issues.apache.org/jira/browse/SPARK-7129?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=14908395#comment-14908395 ] Meihua Wu commented on SPARK-7129: -- [~josephkb] [~sethah] I have compile a doc for AdaBoost.

[jira] [Commented] (SPARK-7129) Add generic boosting algorithm to spark.ml

[ https://issues.apache.org/jira/browse/SPARK-7129?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=14877275#comment-14877275 ] Meihua Wu commented on SPARK-7129: -- [~josephkb] As weighting has been added to logistic regression and

[jira] [Comment Edited] (SPARK-10706) Add java wrapper for random vector rdd

[ https://issues.apache.org/jira/browse/SPARK-10706?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=14877220#comment-14877220 ] Meihua Wu edited comment on SPARK-10706 at 9/19/15 6:48 PM: [~mengxr] I

[jira] [Commented] (SPARK-10706) Add java wrapper for random vector rdd

[ https://issues.apache.org/jira/browse/SPARK-10706?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=14877220#comment-14877220 ] Meihua Wu commented on SPARK-10706: --- I will work on this. > Add java wrapper for random vector rdd >

[jira] [Commented] (SPARK-9834) Normal equation solver and summary statistics for ordinary least squares

[ https://issues.apache.org/jira/browse/SPARK-9834?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=14727568#comment-14727568 ] Meihua Wu commented on SPARK-9834: -- I would like to work on this. > Normal equation solver and summary

[jira] [Commented] (SPARK-9834) Normal equation solver and summary statistics for ordinary least squares

[ https://issues.apache.org/jira/browse/SPARK-9834?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=14728065#comment-14728065 ] Meihua Wu commented on SPARK-9834: -- [~mengxr] Sure. Just let me know if there is anything I can help. >

[jira] [Commented] (SPARK-8518) Log-linear models for survival analysis

[ https://issues.apache.org/jira/browse/SPARK-8518?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=14725935#comment-14725935 ] Meihua Wu commented on SPARK-8518: -- For the reference implementations, recommend we consider this R

[jira] [Commented] (SPARK-9642) LinearRegression should supported weighted data

[ https://issues.apache.org/jira/browse/SPARK-9642?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14721801#comment-14721801 ] Meihua Wu commented on SPARK-9642: -- [~sethah] Thank you for your help. I worked on this

[jira] [Commented] (SPARK-8518) Log-linear models for survival analysis

[ https://issues.apache.org/jira/browse/SPARK-8518?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14702676#comment-14702676 ] Meihua Wu commented on SPARK-8518: -- [~mengxr] [~yanbo] Either way works for me. In R

[jira] [Commented] (SPARK-9245) DistributedLDAModel predict top topic per doc-term instance

[ https://issues.apache.org/jira/browse/SPARK-9245?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14702155#comment-14702155 ] Meihua Wu commented on SPARK-9245: -- [~josephkb] Thank you for clarifying my question. I

[jira] [Commented] (SPARK-8518) Log-linear models for survival analysis

[ https://issues.apache.org/jira/browse/SPARK-8518?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14700302#comment-14700302 ] Meihua Wu commented on SPARK-8518: -- [~yanbo] Thank you very much for the update! The

[jira] [Commented] (SPARK-8520) Improve GLM's scalability on number of features

[ https://issues.apache.org/jira/browse/SPARK-8520?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14700357#comment-14700357 ] Meihua Wu commented on SPARK-8520: -- For 1, how about migrate to treeReduce and

[jira] [Created] (SPARK-9642) LinearRegression should supported weighted data

Meihua Wu created SPARK-9642: Summary: LinearRegression should supported weighted data Key: SPARK-9642 URL: https://issues.apache.org/jira/browse/SPARK-9642 Project: Spark Issue Type: New

[jira] [Updated] (SPARK-9642) LinearRegression should supported weighted data

[ https://issues.apache.org/jira/browse/SPARK-9642?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Meihua Wu updated SPARK-9642: - Description: In many modeling application, data points are not necessarily sampled with equal

[jira] [Commented] (SPARK-9245) DistributedLDAModel predict top topic per doc-term instance

[ https://issues.apache.org/jira/browse/SPARK-9245?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14651319#comment-14651319 ] Meihua Wu commented on SPARK-9245: -- [~josephkb]: would like to confirm: (using notation

[jira] [Updated] (SPARK-9530) ScalaDoc should not indicate LDAModel.describeTopics and DistributedLDAModel.topDocumentsPerTopic as approximate.

[ https://issues.apache.org/jira/browse/SPARK-9530?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Meihua Wu updated SPARK-9530: - Summary: ScalaDoc should not indicate LDAModel.describeTopics and

[jira] [Created] (SPARK-9530) ScalaDoc should not indicate LDAModel.descripeTopic and DistributedLDAModel.topDocumentsPerTopic as approximate.

Meihua Wu created SPARK-9530: Summary: ScalaDoc should not indicate LDAModel.descripeTopic and DistributedLDAModel.topDocumentsPerTopic as approximate. Key: SPARK-9530 URL:

[jira] [Updated] (SPARK-9530) ScalaDoc should not indicate LDAModel.describeTopics and DistributedLDAModel.topDocumentsPerTopic as approximate.

[ https://issues.apache.org/jira/browse/SPARK-9530?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Meihua Wu updated SPARK-9530: - Description: Currently the ScalaDoc for LDAModel.describeTopics and

[jira] [Commented] (SPARK-9246) DistributedLDAModel predict top docs per topic

[ https://issues.apache.org/jira/browse/SPARK-9246?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14646312#comment-14646312 ] Meihua Wu commented on SPARK-9246: -- Cool. I see. will keep updating about the progress.

[jira] [Commented] (SPARK-9246) DistributedLDAModel predict top docs per topic

[ https://issues.apache.org/jira/browse/SPARK-9246?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14646570#comment-14646570 ] Meihua Wu commented on SPARK-9246: -- Got it. Thanks! DistributedLDAModel predict top

[jira] [Commented] (SPARK-9246) DistributedLDAModel predict top docs per topic

[ https://issues.apache.org/jira/browse/SPARK-9246?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14646571#comment-14646571 ] Meihua Wu commented on SPARK-9246: -- Got it. Thanks! DistributedLDAModel predict top

[jira] [Issue Comment Deleted] (SPARK-9246) DistributedLDAModel predict top docs per topic

[ https://issues.apache.org/jira/browse/SPARK-9246?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Meihua Wu updated SPARK-9246: - Comment: was deleted (was: Got it. Thanks!) DistributedLDAModel predict top docs per topic

[jira] [Issue Comment Deleted] (SPARK-9246) DistributedLDAModel predict top docs per topic

[ https://issues.apache.org/jira/browse/SPARK-9246?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Meihua Wu updated SPARK-9246: - Comment: was deleted (was: Got it. Thanks!) DistributedLDAModel predict top docs per topic

[jira] [Commented] (SPARK-9246) DistributedLDAModel predict top docs per topic

[ https://issues.apache.org/jira/browse/SPARK-9246?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14647096#comment-14647096 ] Meihua Wu commented on SPARK-9246: -- I have submitted a PR including the code, ScalaDoc

[jira] [Commented] (SPARK-9246) DistributedLDAModel predict top docs per topic

[ https://issues.apache.org/jira/browse/SPARK-9246?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14645201#comment-14645201 ] Meihua Wu commented on SPARK-9246: -- [~josephkb] I would like to work on this.

[jira] [Commented] (SPARK-9225) LDASuite needs unit tests for empty documents

[ https://issues.apache.org/jira/browse/SPARK-9225?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14638992#comment-14638992 ] Meihua Wu commented on SPARK-9225: -- working on this. LDASuite needs unit tests for

[jira] [Commented] (SPARK-8518) Log-linear models for survival analysis

[ https://issues.apache.org/jira/browse/SPARK-8518?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14634621#comment-14634621 ] Meihua Wu commented on SPARK-8518: -- [~mengxr] [~yanboliang] Sounds like to plan. We would

[jira] [Commented] (SPARK-8518) Log-linear models for survival analysis

[ https://issues.apache.org/jira/browse/SPARK-8518?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14632965#comment-14632965 ] Meihua Wu commented on SPARK-8518: -- Hi [~mengxr] and [~yanboliang], For the log-linear

[jira] [Created] (SPARK-9175) BLAS.gemm fails to update matrix C when alpha==0 and beta!=1

Meihua Wu created SPARK-9175: Summary: BLAS.gemm fails to update matrix C when alpha==0 and beta!=1 Key: SPARK-9175 URL: https://issues.apache.org/jira/browse/SPARK-9175 Project: Spark Issue