CAJ | 학술논문

针对对等网(Peer-to-Peer,P2P)中节点之间由于兴趣爱好差异大、相互发生重复交易的可能性较小从而难以有效建立信任关系的现状,文中提出一种新的基于超级节点的P2P网络信任模型.该模型中节点以兴趣相似而聚簇,节点之间信任关系被划分为3种类型并被给予了各自的解决方案.同时,对于推荐信任信息中存在的虚假的、误导性的和不公正反馈的问题,文中还提出基于节点相似性的反馈信息过滤算法予以有效解决.最后的仿真实验结果表明,该信任模型不但具有抗恶意节点攻击的强壮性,同时在资源查询时具有较低的查询开销和失败率.
침대대등망(Peer-to-Peer,P2P)중절점지간유우흥취애호차이대、상호발생중복교역적가능성교소종이난이유효건립신임관계적현상,문중제출일충신적기우초급절점적P2P망락신임모형.해모형중절점이흥취상사이취족,절점지간신임관계피화분위3충류형병피급여료각자적해결방안.동시,대우추천신임신식중존재적허가적、오도성적화불공정반궤적문제,문중환제출기우절점상사성적반궤신식과려산법여이유효해결.최후적방진실험결과표명,해신임모형불단구유항악의절점공격적강장성,동시재자원사순시구유교저적사순개소화실패솔.
A super-peer based trust model for Peer-to-Peer (P2P) networks is presented in this paper to solve the problems of not sufficiently building trust relation between peers due to the difference of peers' interests and low probability of repeated transactions between them.In the model peers gather in a group according to their interest similarity.Trust relation is categorized into three kinds and subsequently each solution for these kinds is also put forward.Moreover,a feedback filtering algorithm based on peers' similarity is proposed to effectively filter the fake,misleading and unfair feedbacks in the referrals.Subsequent experimental results show that the proposed model is not only robust on trust security,but also has low costs and failure rate when resource search happens.