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Information Retrieval
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HP Wrote: ------------------------------------------------------- > Assumption (Probabilistic Principle) Given a user > query q and a document dj in the collection, the > probabilisitc model tries to estimate the > probability that the user will find the document > dj interesting (i.e., relevant). The model assumes > that this probability of relevance depends on the > query and the document representations only. > Further, the model assumes that there is a subset > of all documents which the user prefers as the > answer set for the query q. Such an ideal answer > set is labeled R and should maximize the overall > probability of relevance to the user. Documents in > the set R are predicted to be relevant to the > query. Documents not in this set are predicted to > be non-relevant. > > (Quoted from Modern Information Retrieval, 1999.)