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Abb. 25: Number of Documents in a Collection when Classified According to the two Criteria: "Contains a term tk " and "Is Relevant to Query"

contains term does not contain term
relevant R(q,k) R(q)-R(q,k)
not relevant d(k)-R(q,k) N-d(k)-R(q)+R(q,k)

The cells of the table give the number of documents satisfying both conditions with the notations from the definition of the Robertson-Spart Jones formula. The numbers can be found in the quotient of the numerator and the denominator in the formula.


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