'Tf ij' diaporamas de présentation

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Text Mining Dr. Tao Li Florida International University

Text Mining Dr. Tao Li Florida International University. Outline. Introduction Pre-processing Retrieval Models Latent Semantic analysis. Why Text?. Significant proportion of information of great potential value is stored in documents:

875 views • 87 slides

Modern Information Retrieval Chapter 7: Text Operations

Modern Information Retrieval Chapter 7: Text Operations. Ricardo Baeza-Yates Berthier Ribeiro-Neto. Document Preprocessing. Lexical analysis of the text Elimination of stopwords Stemming Selection of index terms Construction of term categorization structures. Lexical Analysis of the Text.

701 views • 40 slides

Modern Information Retrieval Chapter 7: Text Operations

Modern Information Retrieval Chapter 7: Text Operations. Ricardo Baeza-Yates Berthier Ribeiro-Neto. Document Preprocessing. Lexical analysis of the text Elimination of stopwords Stemming Selection of index terms Construction of term categorization structures. Lexical Analysis of the Text.

429 views • 40 slides

Text Categorization

Text Categorization. Text Categorization. Assigning documents to a fixed set of categories. Applications: Web pages Recommending Yahoo-like classification Newsgroup Messages Recommending spam filtering News articles Personalized newspaper Email messages Routing Prioritizing

273 views • 27 slides

Automatic Indexing (Term Selection)

Automatic Indexing (Term Selection). Automatic Text Processing by G. Salton, Chap 9, Addison-Wesley, 1989. Automatic Indexing. Indexing: assign identifiers (index terms) to text documents. Identifiers: single-term vs. term phrase

456 views • 26 slides

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Project Management. CPM. Example - Music DM, Inc. Solution - CPM. 1) Construct the network. 2) Event analysis. - forward pass. - backward pass. 3) Activity analysis. - critical activities. - noncritical activities.

317 views • 15 slides