【摘要】 该文提出一种基于熵加权属性子空间的目标社区发现方法,挖掘与用户偏好相关的社区。首先,从属性和结构两个方面综合考虑节点间的相似度,利用用户给定的样例节点及其邻居扩展得到目标社区中心点集;其次,在中心点集上,设计一种熵加权的属性权重计算方法,得到目标社区的属性子空间权重;再次,利用目标社区的属性子空间权重,基于节点的属性和结构相似度重写网络中边的权重;最后,定义社区适度函数并结合重写后网络中边的权重改进社区适度函数,以中心节点集为核心,挖掘基于用户偏好的内部连接紧密且与外部分离较好目标社区。此外,该方法可以扩展到网络中多个社区发现及离群点检测任务中。在人工网络和真实网络数据集上的实验结果验证了该文所提算法的效率和有效性。更多还原

【Abstract】 In this paper,we propose a method of target community detection based on attribute subspace with entropy weight,so as to detect community related to user preferences.Firstly,the similarity between nodes is calculated from both attributes and structures,and the center node set of the target community can be obtained via extending the sample node with its neighbors given by the user.Secondly,an attribute calculation method with entropy weights is established based on the center node set,and the attribute subspace of the target community can thus be captured.Thirdly,the edge weight of network is re-written based on the similarity between nodes under the captured attribute subspace weights.Finally,the community function is defined and further improved based on the weights of the current network.And then the target community with users’ preference is detected based on the center node set,which is closely connected internally and separated from the outside communities.In addition,our method can be extended to multiple community detection tasks and outlier detection.Experimental results on artificial networks and real network datasets demonstrated the efficiency and effectiveness of the proposed algorithm.更多还原