similarity definition between two sets with the different cardinality

Discussion in 'MATLAB' started by cele, Aug 5, 2004.

  1. cele

    cele Guest

    Thanks any advices in advance.

    sorry, the last messenge is not clear.My problem is as follows:

    Given two itemsets
    T={i1,i2,¡­,im}, T¡¯={j1,j2,¡­,jn}, m¡Ùn
    also know the distance between any pair of elements from T and T'
    separately.

    how to define the similarity between T and T', in other words,
    given a target itemset, I need to query the similarity itemset from
    many many other itemsets.
     
    cele, Aug 5, 2004
    #1
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  2. cele

    ghw Guest


    Try the formula:
    Sim(A,B)=|A*B|/|AUB|*Dis(A,B)
     
    ghw, Aug 30, 2004
    #2
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