Nippon Telegraph and Telephone Corporation

Asami Miyajima

Masahiro Shiraishi

Hiroki Nagayama

Tomoaki Washio

Dai Ikarashi

Koki Hamada

Hiroki Ito

Ryo Kikuchi

Hitoshi Fuji

Yoshihito Oshima

Gen Takahashi

Satoshi Tanaka

A communication control system includes: a state switching support apparatus including a processor; and a communication control apparatus to control communication to a protection target according to its state. The processor executes generating grid point data in which a grid point group representing exhaustive communications to the target is associated with states corresponding to grid points of the grid point group using previously collected data related to the communication; generating, by using the grid point data and data related to current communication, generating a state distribution representing a distribution of the states in a vicinity of a point represented by the data related to current communication in the grid point group; predicting a time when the state transitions to another state from a change in the state distribution from past to present; and transmitting an instruction to switch the state to the communication control apparatus at the predicted time.

Communication control system, status switchover support apparatus, status switchover support method and program

A communication system that performs communication among a plurality of nodes by a broker-less type publishing/subscribing model, the communication system including a computer including a memory and a processor configured to receive communication data among the plurality of nodes; based on the communication data, create first relationship information indicating a relationship among the nodes regarding transmission and reception of the communication data, second relationship information indicating a relationship among the nodes regarding a belonging domain and whether the nodes are on a publisher side or on a subscriber side, and third relationship information indicating a relationship among the nodes regarding a topic to be published and subscribed; and create configuration information indicating a network configuration of the communication system by associating the first relationship information, the second relationship information, and the third relationship information.

Communication system, configuration management apparatus, configuration management method, and program

A communication system that performs communication among a plurality of nodes by a broker-less type publishing/subscribing model, includes: a computer including a memory and a processor configured to detect distribution of unauthorized data from one application that is handled with priority on a subscriber side among one or more applications that are redundant on one or more of the nodes and functioning as a publisher side; and switch an application handled with priority on the subscriber side to another application different from the one application among the one or more applications in a case where distribution of the unauthorized data is detected.

Communication system, inspection apparatus, inspection method, and program

Provided is a technique for performing statistical processing such as processing for obtaining parameters of logistic regression analysis faster than before. A secure statistical processing system includes a cross tabulation table computing devicethat performs secure computation on a cross tabulation table in which frequencies are in plain texts while keeping each record concealed; and a statistical processing devicethat performs predetermined statistical processing using the cross tabulation table in which frequencies are in plain texts. The cross tabulation table computing devicemay include a plurality of secure computation devicesN that perform secure computation on a cross tabulation table in which frequencies are fragments subjected to secret sharing while keeping each record concealed, and a management devicethat restores the fragments to compute the cross tabulation table in which frequencies are in plain texts.

Secret statistical processing systems, methods, statistical processing apparatus and program

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Tokyo, Japan

Asami Miyajima