Can we apply Correlation based Feature Selection algorithm for a dataset containing only numeric value(ie I am using gene data)?
Why do you restrict correlation?
I solved select cancer gene feature completely and publisher the book from Springer at the end of this Jan. And I finish to write cancer gene diagnosis book already.
I plan to publish it within this year. See my RG HP.
I think you may apply......but it characteristics totally depends on the nature of the gene data which you are using......You may follow these below links for your help......
https://academic.oup.com/bioinformatics/article/28/24/3306/245457/An-ensemble-correlation-based-gene-selection
http://www.ijcaonline.org/volume4/number8/pxc3871182.pdf
http://www.diva-portal.org/smash/get/diva2:957430/FULLTEXT01.pdf
http://sci2s.ugr.es/sites/default/files/ficherosPublicaciones/1772_bol14_INS_FS_microarray.pdf
http://www.cs.waikato.ac.nz/~mhall/thesis.pdf
Why do you restrict correlation?
I solved select cancer gene feature completely and publisher the book from Springer at the end of this Jan. And I finish to write cancer gene diagnosis book already.
I plan to publish it within this year. See my RG HP.
you can use cross table with chi squared stats.
you can also use Pearson correlation (by casting categoricals as continuous, but this is less desirable)
If numerical data, you can surely apply CFS. However for binary data it may be tricky!
Dear Kavitha k r,
First you calculate correlation between different features and and check for both negative as well as a positive correlation coefficients. If feature shows a higher correlation with other features, then you will check the performance of these features individually and in a combined way and select a feature or group of features, which soever perform better.
If you want to know more detail about implementation please mail me.
Thanks
Lov
In any case you can apply CFS (I guess you use Weka tool). In case both the features and the targets are continuous the algorithm uses PEarson correlation, if the target is classification, it uses Symmetrical Uncertainty (which is based on mutual information) after discretization of continuous features.
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