[R] How does findAssocs() calculate the correlation value ??
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yarmi1224 at hotmail.com
Fri Jul 7 03:55:39 CEST 2017
hi:
I want to know the math behind the "tm" package findAssocs().
I have found that someone had asked the question before, and have a good explanation by Rick.
¡]http://r.789695.n4.nabble.com/findAssocs-td3845751.html¡^
But I still don't understand how to calculate the correlation value between the two vectors.
For example:
# Correlation word2 with word3
cor(c(0,1,1,1,1),c(0,0,1,1,1))
[1] 0.6123724
How does it caculate cor(c(0,1,1,1,1),c(0,0,1,1,1)) to get 0.6123724 ?
Eva
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