A method that uses matrix factorization to find hidden meaning in words and documents.
LSA is like a school librarian with excellent gossip. You say “gym.” I say “workout.” She shelves us together.
You meet it in search and recommendations. It groups text by meaning, not just exact words.
Matrix Factorization
LSA uses matrix factorization to shrink word-document links into a meaning space.
Dim. Reduction
LSA is an early dim. reduction method for text meaning.
IR
LSA helped match documents by meaning, not just exact words.
Dist. Semantics
LSA uses word co-occurrence to guess hidden meaning.