Tagged Questions

0
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1answer
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Merge text collection subsamples for cross-validation

I'm doing a research and to test our methods we're using 5-fold cross-validation. Our collections consist of some pre-classified text. To use the data in Weka, I'm pre-processing it with the ...
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22 word frequency Variable has been selected for predicting whether tomorrow is up or down day (binary target), how to interpret

First of all, I appreciate lot of creator of this web and any attention on this question. I asked related question here: 52 variables after backward variable selection on logistic regression on 160 ...
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1answer
431 views

Is cross validation a proper substitute for validation set?

In text classification, I have a training set with about 800 samples, and a test set with about 150 samples. The test set has never been used, and waiting to be used until the end. I am using the ...