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Cosine similarity

Cosine similarity. Cosine of angle between two vectors The denominator involves the lengths of the documents. Normalization. Example. Docs: Austen's Sense and Sensibility , Pride and Prejudice ; Bronte's Wuthering Heights cos(SAS, PAP) = .996 x .993 + .087 x .120 + .017 x 0.0 = 0.999

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Cosine similarity

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  1. Cosine similarity • Cosine of angle between two vectors • The denominator involves the lengths of the documents. Normalization

  2. Example • Docs: Austen's Sense and Sensibility, Pride and Prejudice; Bronte's Wuthering Heights • cos(SAS, PAP) = .996 x .993 + .087 x .120 + .017 x 0.0 = 0.999 • cos(SAS, WH) = .996 x .847 + .087 x .466 + .017 x .254 = 0.889

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