[GitHub] spark issue #14640: [SPARK-17055] [MLLIB] add labelKFold to CrossValidator

2016-09-01 Thread VinceShieh
Github user VinceShieh commented on the issue:

https://github.com/apache/spark/pull/14640
  
Updates:
1. code refactoring. Rename the API to align with Sklearn changes
2. add implementation in CrossValidator


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[GitHub] spark issue #14640: [SPARK-17055] [MLLIB] add labelKFold to CrossValidator

2016-08-23 Thread hqzizania
Github user hqzizania commented on the issue:

https://github.com/apache/spark/pull/14640
  
This work may be similar with 
[SPARK-8971](https://github.com/apache/spark/pull/14321) which is another 
variation of KFold, and very significant in some cases.  I suppose it is okay 
to add to .mllib like the latter PR, but we could add its use to CrossValidator 
in .ml. @sethah @MLnick @yanboliang 
BTW, fortunately, it seems to be easier to implement than the 
kFoldStratified, as it does not need to change underlying codes, such as in 
rdd/PairRDDFunctions. 


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[GitHub] spark issue #14640: [SPARK-17055] [MLLIB] add labelKFold to CrossValidator

2016-08-23 Thread MechCoder
Github user MechCoder commented on the issue:

https://github.com/apache/spark/pull/14640
  
Just FYI, we plan to rename "LabelKFold" to "GroupKFold" in the next 
version of sklearn as a label can mean several things. (including the target 
label)


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[GitHub] spark issue #14640: [SPARK-17055] [MLLIB] add labelKFold to CrossValidator

2016-08-23 Thread holdenk
Github user holdenk commented on the issue:

https://github.com/apache/spark/pull/14640
  
@VinceShieh there are kfold exists in Spark ML as well, and this PR could 
maybe go instead of trying to add it on to mllib (for which we don't plan to 
add new features anymore rather bug fixes only).


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[GitHub] spark issue #14640: [SPARK-17055] [MLLIB] add labelKFold to CrossValidator

2016-08-22 Thread VinceShieh
Github user VinceShieh commented on the issue:

https://github.com/apache/spark/pull/14640
  
@holdenk thanks for your comments. :) You are right. But as you can see, 
this is a variant of kFold, so I think it's better to stay close to it, 
otherwise, it would seems confusing, dont you think?


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[GitHub] spark issue #14640: [SPARK-17055] [MLLIB] add labelKFold to CrossValidator

2016-08-22 Thread VinceShieh
Github user VinceShieh commented on the issue:

https://github.com/apache/spark/pull/14640
  
if one understands the underlying ideas behind this method (labelKFold), 
it's easy to take it as a class/category of data, though I do think it's not 
that straightforward, even a bit confusing, when I saw it the first time.  
@amueller 


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[GitHub] spark issue #14640: [SPARK-17055] [MLLIB] add labelKFold to CrossValidator

2016-08-22 Thread amueller
Github user amueller commented on the issue:

https://github.com/apache/spark/pull/14640
  
Do you guys thing "label" is a good name for this? Or did you just take it 
from us? See the issue linked to above.


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[GitHub] spark issue #14640: [SPARK-17055] [MLLIB] add labelKFold to CrossValidator

2016-08-15 Thread holdenk
Github user holdenk commented on the issue:

https://github.com/apache/spark/pull/14640
  
Thanks for making this issue and PR :) The first thing before people are 
likely to have the bandwith to review this is we are switching all new ML 
development to Spark ML from MLlib so it might be good to retarget this on top 
of Spark ML.


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