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Workflow LSI content based recommender system template (1)

Created: 06/05/11 @ 20:40:24 | Last updated: 09/05/11 @ 13:59:18

Credits: User Ninoaf User Matko Bošnjak

Attributions: Workflow Content based recommender system template Blob Datasets for the pack: RCOMM2011 recommender systems workflow templates

License: Creative Commons Attribution-No Derivative Works 3.0 Unported License

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This workflow performs LSI text-mining content based recommendation. We use SVD to capture latent semantics between items and words and to obtain low-dimensional representation of items. Latent Semantic Indexing (LSI) takes k greatest singular values and left and right singular vectors to obtain matrix  A_k=U_k * S_k * V_k^T. Items are represented as word-vectors in the original space, where each row in matrix A represents word-vector of particular item. Matrix U_k, on the other hand ...

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