Hi Burak, Thanks for the response. I am using Spark version 1.3.0 through Java API.
Regards, CD On Tue, Jun 23, 2015 at 5:11 AM, Burak Yavuz <brk...@gmail.com> wrote: > Hi, > > In Spark 1.4, you may use DataFrame.stat.crosstab to generate the > confusion matrix. This would be very simple if you are using the ML > Pipelines Api, and are working with DataFrames. > > Best, > Burak > > On Mon, Jun 22, 2015 at 4:21 AM, CD Athuraliya <cdathural...@gmail.com> > wrote: > >> Hi, >> >> I am looking for a way to get confusion matrix for binary classification. >> I was able to get confusion matrix for multiclass classification using this >> [1]. But I could not find a proper way to get confusion matrix in similar >> class available for binary classification [2]. Later I found this class [3] >> which corresponds to my requirement but I am not sure about the way I >> should use that class to get evaluation metrics for binary classification. >> e.g. Given the constructor BinaryConfusionMatrixImpl(BinaryLabelCounter >> count, BinaryLabelCounter totalCount), from where I can get this count and >> totalCount? Appreciate any help on this. >> >> [1] >> http://spark.apache.org/docs/1.3.0/api/java/org/apache/spark/mllib/evaluation/MulticlassMetrics.html#confusionMatrix() >> [2] >> http://spark.apache.org/docs/1.3.0/api/java/org/apache/spark/mllib/evaluation/BinaryClassificationMetrics.html >> [3] >> http://spark.apache.org/docs/1.3.0/api/java/org/apache/spark/mllib/evaluation/binary/BinaryConfusionMatrixImpl.html >> >> Thanks >> >> -- >> *CD Athuraliya* >> Software Engineer >> WSO2, Inc. >> Mobile: +94 716288847 <94716288847> >> LinkedIn <http://lk.linkedin.com/in/cdathuraliya> | Twitter >> <https://twitter.com/cdathuraliya> | Blog >> <http://cdathuraliya.tumblr.com/> >> > > -- *CD Athuraliya* Software Engineer WSO2, Inc. Mobile: +94 716288847 <94716288847> LinkedIn <http://lk.linkedin.com/in/cdathuraliya> | Twitter <https://twitter.com/cdathuraliya> | Blog <http://cdathuraliya.tumblr.com/>
