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Yes, W is a learnable parametric matrix. It is empirically used to eliminate the (potential) gap between the hypergraph embedding space and the GNN embedding space.
W = NNs.defineRandomNameParam([args.latdim, args.latdim])
pckHyperULat = tf.nn.l2_normalize(tf.nn.embedding_lookup(hyperULats[i], uniqUids), axis=1) @ W
这里的W是一个参数矩阵,为什么计算损失的时候需要用到这个矩阵?这个矩阵是可学习的吗?
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