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In this paper, a variety of link mining methods are handled in an integrated manner with previous data mining methods, and a network mining framework (NMF) is proposed. This paper also presents example usages of the NMF, and discusses how high-level network mining are achieved by using the NMF.

In this paper, we propose a novel communication paradigm called group-oriented communication. Different from conventional unicast-based communications, group-oriented communication is entirely based on group-based communication. Our group-oriented communication is essentially a type of many-to- many communication, but it realizes any type of communications including one-to-one, one-to-many, many-to-one and many-to- many communications based on group-based communication. With our group-oriented communication, diverse social activities can be shifted into a communication network in a straightforward way, and users' requirements on security/reliability can be fulfilled. In this paper, we first qualitatively discuss advantages of our group-oriented communication by comparing with the conventional IP-based network. We then discuss four design goals of a network architecture for our group-oriented communication: supporting dynamic entity/group, supporting address operation expression, realization of entity/group find ability, and realization of security. After carefully examining these design goals, we design a network architecture for realizing our group-oriented communication. Through quantitative evaluations, we show that the network architecture for our group-oriented communication should be packet-based, that reachability control is the core networking technology, and that the network architecture should have the two-layer structure consisting of transport and control layers.

In this paper, we propose a network architecture for realizing a group-based communication to solve issues of the Internet such as lack of security and low information S/N (Signal To Noise) ratio. We design a network architecture based on a multiple-association model. The proposed network architecture can realize high information S/N ratio by constructing multiple groups for different communication purposes, and can also realize security by logically separating those groups. An existing user terminal cannot be associated with multiple groups. Hence, in our network architecture, multiple groups are terminated at a gateway called SA (Security Agent), which realizes multiple association to several groups. A user terminal is directly connected to a Web concentrator running on SA. Similarly to a portal Web site, a Web concentrator aggregates contents from multiple groups, and transmits the aggregated contents to a user terminal. Several networking technologies for realizing group-based communications have been proposed. From the comparative evaluation of those networking technologies, we show that (1) SSL-VPN is suitable for access networks connecting a user terminal and SA, and that (2) MPLS-VPN is suitable for the backbone network connecting SAs. We also show that the proposed network architecture realizes security and high information S/N ratio for Web-based applications.