Abstract: An information processing system includes, a supply-chain-network obtaining unit configured to obtain a supply chain network in which a plurality of nodes each corresponding to one of a plurality of companies are connected together through links, a subnetwork extracting unit configured to extract a subnetwork including at least one of an upstream subnetwork and a downstream subnetwork, the upstream subnetwork including an upstream company that supplies the product to a company corresponding to a processing target node among the plurality of companies, the downstream subnetwork including a downstream company that is supplied with the product from the company corresponding to the processing target node, a vector obtaining unit configured to determine a complex vector representing the processing target node, and a similarity calculating unit configured to calculate a similarity between two of the plurality of nodes in accordance with the two complex vectors corresponding to the two nodes.

Abstract: An information processing system includes: a supply chain network obtaining unit obtaining a supply chain network in which a plurality of nodes, each corresponding to one of a plurality of companies, are connected together with links; a subnetwork extracting unit extracting, from the supply chain network, a subnetwork including at least one of an upstream subnetwork including an upstream company supplying a first company with a product, or a downstream subnetwork including a downstream company supplied with the product from the first company; a path extracting unit extracting a path group including one or more paths in the subnetwork, the one or more paths connecting a node representing the first company and a node representing a second company with one or more of the links; and a redrawing unit redrawing the path group extracted by the path extracting unit.

Abstract: An information processing system analyzes an influence level for each of a plurality of higher nodes to which a particular one of a plurality of nodes is directly or indirectly linked based on at least one of the capital contribution ratios that is assigned to a path along which one of the capital investment relations from the particular node is traced, by using a capital contribution ratio in the particular node as an index. When the capital contribution ratio of one of two or more of the plurality of higher nodes to which an analysis target node that is a target in analyzing the influence level is linked is in excess of half, the analysis unit analyzes the one higher node the capital contribution ratio of which is in excess of half to be effectively controlling the analysis target node.

Abstract: An information processing system includes: a supply chain network obtaining unit obtaining a supply chain network in which a plurality of nodes are connected together with a plurality of links, the plurality of nodes corresponding to a plurality of companies and provided with attributes, the attributes including industrial classifications of the companies and related to the companies, and the plurality of links representing trading relationships associating a company to provide a product and a company to receive the product; and a vector representation calculating unit calculating a plurality of vector representations each corresponding to one of the plurality of nodes, and each representing a feature amount of one of the plurality of nodes, by application of a graph embedding technique to the supply chain network.