System of document representation retrieval by successive iterat

Details System of document representation retrieval by successive iterat System of document representation retrieval by successive iterat

1993-03-30

1996-01-30

Black, Thomas G.

Boots, shoes, and leggings

36441919, 364DIG1, 3642821, 3642823, G06F 1730

Patent

active

054887259

ABSTRACT:
An information retrieval system based on probabilities that documents meet information needs. The frequency of occurrence of a representation in a collection of documents is estimated by identifying the frequency of occurrence of the representation in a sample of documents and calculating the difference between the maximum and minimum probable frequencies of occurrence of the representation in the collection. If the difference does not exceed a limit, a midpoint of the maximum and minimum probable frequencies is the estimated frequency of occurrence of the representation.
Document distribution probabilities are optimized and probability thresholds are established for the identification of documents. An initial probability threshold is established and is adjusted as the probabilities are scored for documents in samples. The document result list is iteratively adjusted through the samples.

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