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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