PART 11Fuzzy DB and IR

1. Fuzzy databases2. Fuzzy information retrieval

FUZZY SETS AND

FUZZY LOGICTheory and Applications

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Fuzzy databases

Example

suppose our database contains the opinions of a group of experts on three policy options, X, Y, and Z.

Two relations are specified in Table 11.1.

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Fuzzy databases

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Fuzzy databases

Following fuzzy compatibility relation is defined for the domain OPINION on the domain universal set (highly favorable (HF), favorable (F), slightly favorable (SF), slightly negative (SN), negative (N), and highly negative (HN)):

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Fuzzy databases

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Fuzzy databases

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Fuzzy databases

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Fuzzy databases

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Fuzzy databases

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Fuzzy databases

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Fuzzy information retrieval

Fuzzy thesaurus

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Fuzzy information retrieval

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Fuzzy information retrieval

Example

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Fuzzy information retrieval

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Fuzzy information retrieval

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Fuzzy information retrieval

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Fuzzy information retrieval

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Exercises 11

11.1

11.2

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