Vector Encodings
Given Term by Doc Matrix A:
- SMART (Doc vectors = columns of A)
- Truncated SVD (Reduced rank approx. to A)
- Semi-Discrete Decomposition or SDD (vector coordinates constrained to be {-1,0,1})
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T.G. Kolda and D.P. OÆLeary, A Semi-Discrete Matrix Decomposition for Latent Semantic Indexing in Information Retrieval, ACM Transactions on Information Systems, 16:4:322-346, (1998).