Tagged Questions

2
votes
1answer
778 views

R knn variable selection

I have a data set that's 200k rows X 50 columns. I'm trying to use a knn model on it but there is huge variance in performance depending on which variables are ...
3
votes
1answer
426 views

Text feature vector extraction

I have a class assignment to implement a couple existing ways to extract feature vectors from a given set of texts, so they can be used to classify those texts using k-nearest neighbour algorithm. The ...