I am getting negative cosine similarity value between two documents in Latent Semantic analysis. How should it be treated?
6
$\begingroup$
$\endgroup$
-
1$\begingroup$ Same question on SO: Why can cosine similarity between two vectors be negative? $\endgroup$ – smci Mar 30 '17 at 20:53
0
$\begingroup$
$\endgroup$
After applying LSA the cosine similarity should yield values between -1 and 1. Why exactly is this a problem for you?
See this answer for a good explanation regarding your question.
answered Apr 12 '15 at 13:28
0
$\begingroup$
$\endgroup$
Cosine similarities could be negative for sure. If you're trying to interpret this (not that you think it's problematic to have negative values), then I think it means these two documents are talking about opposite things.
-
1$\begingroup$ what do you mean by "talking about opposite things"? $\endgroup$ – sandyp Jul 5 '18 at 16:45
