'Fuzzy set model' diaporamas de présentation

Information Retrieval

Information Retrieval. CSE 8337 Spring 2003 Modeling Material for these slides obtained from: Modern Information Retrieval by Ricardo Baeza-Yates and Berthier Ribeiro-Neto http://www.sims.berkeley.edu/~hearst/irbook/

676 views • 55 slides

Information Retrieval

Information Retrieval. CSE 8337 Spring 2005 Modeling Material for these slides obtained from: Modern Information Retrieval by Ricardo Baeza-Yates and Berthier Ribeiro-Neto http://www.sims.berkeley.edu/~hearst/irbook/

704 views • 55 slides

Information Retrieval

Information Retrieval. CSE 8337 Spring 2007 Modeling Queries and Documents Material for these slides obtained from: Modern Information Retrieval by Ricardo Baeza-Yates and Berthier Ribeiro-Neto http://www.sims.berkeley.edu/~hearst/irbook/

644 views • 53 slides

Chapter 2 Modeling

Chapter 2 Modeling. Modern Information Retrieval by R. Baeza-Yates and B. Ribeiro-Neto. Introduction. Traditional information retrieval systems usually adopt index terms to index and retrieve documents.

892 views • 45 slides

The Boolean Model

The Boolean Model. Simple model based on set theory Queries specified as boolean expressions precise semantics neat formalism q = k a ? (k b ? ?k c ) Terms are either present or absent. Thus, w ij ? {0,1} Consider q = k a ? (k b ? ?k c )

1.09k views • 32 slides

Similarity relation defined for the domain opinion

Similarity relation defined for the domain opinion. Query: which sociologists are in considerable agreement with Kass concerning policy Y?. Fuzzy Relational Data Base: Buckles, Petry Elements of the tuples contained in the relations may be subsets of the domain universal set.

350 views • 26 slides

Advanced information retrieval

253 views • 16 slides

Alternative IR Models

Alternative IR Models. Najah Alshanableh. Fuzzy Set Model. Queries and docs represented by sets of index terms: matching is approximate from the start This vagueness can be modeled using a fuzzy framework, as follows: with each term is associated a fuzzy set

130 views • 11 slides