CODEWITHSUNDEEP
rsparse-matrixfeature-selectionfselector
Osm
Osm

Reputation: 81

How to do feature selection on SparseMatrix matrix in R

I have text classification problem with over 20k features, 3m objects, and over 3k classes. Data is very sparse. I wrote the program on R. Data matrix in sparseMatrix object. How can I select features on this data? I found package FSelector, but it is not working with sparseMatrix, only data.frame, and I can not convert data due to memory limitation.

Upvotes: 1

Views: 605

Answers (1)

Riadh Belkebir
Riadh Belkebir

Reputation: 797

Please take a look at:

FSelector:

https://cran.r-project.org/web/packages/FSelector/FSelector.pdf

varSelRF:

https://cran.r-project.org/web/packages/varSelRF/varSelRF.pdf

R, correlation matrix filters, PCA & backward selection:

http://www.r-bloggers.com/introduction-to-feature-selection-for-bioinformaticians-using-r-correlation-matrix-filters-pca-backward-selection/

Upvotes: 0

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