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Table 1 Node Combination methods. Binary operators are element-wise

From: Neural networks for link prediction in realistic biomedical graphs: a multi-dimensional evaluation of graph embedding-based approaches

Operator

Definition

Average

\(\frac {f_{i}(u) + f_{i}(v)}{2}\)

Concatenate

f(u). f(v)

Hadamard

f i (u)f i (v)

Weighted-L1

|f i (u)−f i (v)|

Weighted-L2

|f i (u)−f i (v)|2