Introduction of Human Body & Structure of cell.pptx
Geometric Aspects of LSA
1. Geometric Aspects of
Semantic Indexing
Dr. Heinrich Hartmann (Oxford)
WeST Koblenz, 31.08.2012
2. Outline
1. Latent Semantic Analysis
2. Geometry of SVD
3. Common Ground
3. Part 1
Latent Semantic Analysis
Problem. Given a set of documents
(D1,...,DN)
which documents have a similar topic?
Answer. Latent Semantic Analysis
(Deerwester, et. al. 1990)