Questions tagged [k-nearest-neighbors]

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What is the effect of K in K-NN on the VC dimension?

What is the effect of K in K-NN on the VC dimension? When K increases, is the VC dimension decreased or increased, or we can't say anything about this? Is there a reference book that discusses this?
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what is the correct approach for KNN in item based recommendation system?

if I make an application for movies and each user in the system can rate the movies. And I want to make a recommendation system to recommend movies to active user based on his rating for other movies. ...
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Why does KNN algorithm perform better on Word2Vec than on TF-IDF vector representation?

I am doing a project on multi-class text classification and could do with some advice. I have a dataset of reviews that are classified into 7 product categories. Firstly, I create a term-document ...
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How can I find the optimal K for K-nearest neighbor Algorithm

I want to know what is the best way to find the most suitable k in knn algorithm for Item-based collaborative filtering . I want to make a recommendation system for an application to recommend the ...