def METHOD_NAME(self, pos_graph, neg_graph, blocks, item_emb):
    h_item = self.get_repr(blocks, item_emb)
    pos_score = self.scorer(pos_graph, h_item)
    neg_score = self.scorer(neg_graph, h_item)
    return (neg_score - pos_score + 1).clamp(min=0)