| 摘要 |
The present invention provides a method of searching a recommender for a trust-based recommendation system based on scale-freeness of a trust network, which is capable of effectively achieving a high prediction level. At least two hubs are selected from the trust network for the purpose of trust propagation and the selected at least two hubs are combined with one node to construct a key structure. After a hub, which relates to the recommender among the at least two hubs included in the key structure, is found out, an active user is connected to the key structure and the key structure and the recommender are connected to each other through the found hub. The trust network is a scale-free network. In addition, the node trusted by a certain node of the key structure is treated as the node trusted by the key structure. |
