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Factorization Machines - 國立臺灣大學

Factorization Machines - 國立臺灣大學

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w0 ∈ R, w∈ Rn, V∈ Rn×k (2) And h·,·i is the dot product of two vectors of size k: hv i,v ji := Xk f=1 v i,f · v j,f (3) A row v i within Vdescribes the i-th variable with k factors. k ∈ N+ 0 is a hyperparameter that defines the dimensionality of the factorization. A 2-way FM (degree d =2) captures all single and pairwise ...

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