Talk:Document-term matrix: Difference between revisions

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Kh251 (talk | contribs)
Disagree with the last changes
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I don't agree with the last changes. Performing eigenvalue decomposition reduce the size of the matrix, thus improves speed, but decreases accuracy. I know I might be wrong, but I'd like to understand...
[[User:Kh251|KH251]] 09:32, 21 July 2005 (UTC)
 
: Not necessarily: what you say is one valid interpretation of the reduction, but the reduction can also be interpreted as creating a "better" matrix, since the operation tends to "soften" the representation and reduce possible noise.
: Also, it's not always true that this makes it easier on the computational side; for instance, LSA is rather ''heavier'' than just just leaving the thing alone (I have a reference for that somewhere, I am just rather busy at the moment...). Hope it helps ! Cheers ! [[User:Rama|Rama]] 12:14, 21 July 2005 (UTC)