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Wang, H. (author), Qu, C. (author), Jiao, Chongze (author), Ruszel, W.M. (author)A signed network represents how a set of nodes are connected by two logically contradictory types of links: positive and negative links. In a signed products network, two products can be complementary (purchased together) or substitutable (purchased instead of each other). Such contradictory types of links may play dramatically different roles...journal article 2019