prov:value
| - UE ( C , a , e ) = fr ( a , e ) ??? i ??? C , i ??? a fr ( i , e ) + ?? ( 2 ) Wherein, C is a category, a is an object, e is an evaluation expression, fr(a, e) is the number of evaluation pairs of the object a, fr(i, e) is the number of evaluation pairs other than the object a, and ?? is a constant for preventing the denominator from becoming 0.
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