Generalized vector space model: Difference between revisions

Revision as of 22:31, 28 January 2010

Revision as of 15:52, 12 February 2010

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For a document ''d_k'' and a query ''q'' the similarity function now becomes:

:<math>sim(d_k,q) = \frac{\sum _{j=1}^n \sum _{i=1}^n w_{i,k}*w_{ij,q}*t_i \cdot t_j }{\sqrt{\sum _{i=1}^n w_{i,k}^2}*\sqrt{\sum _{i=1}^n w_{i,q}^2}}</math>

where ''t_i'' and ''t_j'' are now vectors of a ''2ⁿ'' dimensional space.