Микро F1 өлшемі

High dimension of bag-of-words vectors poses a serious challenge from sparse data, overfitting, irrelevant features to document classification. Filter feature selection is one of effective methods for dimensionality reduction by …...

This paper proposes a variability normaliza- tion algorithm to reduce the variability be- tween intra-topic documents for topic classi- fication. Firstly, an optimization problem is constructed based on linear variability …...