Hi,<br>Can&#39;t find on hackage any sparse vector library. Does such thing exist?<br>I need efficient storage and dot product calculation for very sparse  vectors with about 10 out of 40 000 non-zero components. <br>One solution would be to represent Sparse Vector as Data.Map with  (component_index, component_value) pairs to store non-zero components of the vector. <br>
In this case, for example,  calculating cosine similarity (<a href="http://en.wikipedia.org/wiki/Cosine_similarity">http://en.wikipedia.org/wiki/Cosine_similarity</a>) for for every pair of 10 000 vectors, would not be very nice and efficient, I am afraid.  <br>
<br>Thanks! <br><br>