Nec Corporation

Takashi Shiraki

Yoshihiro Ono

Takehiko Kashiwagi

Kazuhiro Takahashi

Hiroyuki Saito

Junpei Kamimura

Kazutomo Kobayashi

Junichi Kokudo

Huanxu Pan

Shin Harada

Kouichi Funaya

Shohei Sato

A graph structure analysis apparatusis an apparatus for analyzing a graph structure. The graph structure analysis apparatusincludes a range selection unitthat selects an analysis target range in the graph structure and a comparison target range to be compared with the analysis target range, and a feature representation extraction unitthat extracts a feature representation from data related to the analysis target range and the comparison target range, for each of the ranges.

Graph structure analysis apparatus, graph structure analysis method, and computer-readable recording medium

In a network advertisement system, an information processing section includes a module to store, when sales or service operation is conducted for a first terminal, purchase history of articles or services of the first terminal; and a Social Network Service includes an extraction module to extract, on receiving from the module a notification of the reception of the article or service by the first terminal, registered users related to the user of the first terminal. The SNS notifies the reception of the article or service by the first terminal to terminals of the registered users thus extracted. When a second terminal receives purchase of an article or provision of a service on the basis of the notification of purchase information of plural users, a degree of contribution to the sales promotion is expressed by a numeric value for each of the plural users by referring to the shop server and the SNS to reflect the degree of contribution to the affiliate. Therefore, in the network advertisement system, when a user purchases an article, information of the article is notified to friends of the user to thereby automatically provide an amount of affiliate to the user or a plurality of users.

Network advertisement delivery system

A multimodal service establishing method is provided which is capable of achieving flexible combinations of a plurality of service contents. At least one integrated server is installed between a plurality of terminal devices and service servers of a plurality of types. A session establishment processing unit and service linking processing unit are mounted in the integrated server. The session establishment processing unit establishes multimodal service session between terminals and service servers. After the establishment of multimodal service session, the service linking processing unit provides new service obtained by linking and integrating service to be provided by service servers, that is, multimodal service to terminal devices.

Multimodal service session establishing and providing method, and multimodal service session establishing and providing system, and control program for same

The object of the present invention is to realize a method and a server which enable insertion of advertisement even in voice communication including multimedia communication. The server is configured as a server for managing PoC communication among multiple terminals, comprising: a right-to-speak management section for managing the right to speak of the multiple terminals; a data distribution section for transmitting and receiving data to and from the multiple terminals; and an advertisement control section for storing advertisement data and transmitting the stored advertisement data to the multiple terminals via the data distribution section.

Method for inserting advertisement into PoC and extended-PoC communication system

A method for evaluating the performance of a wireless LAN (local area network) system having a single access point and a plurality of transmission terminals, which share the same radio channel, comprises the steps of dividing the plurality of transmission terminals into groups in accordance with radio conditions, calculating a transmission probability and a post-transmission failure probability for each group using a transmission rate, an error rate, and the number of terminals of each group, and calculating a throughput based on the transmission probability and post-transmission failure probability. A characteristic value for packet transmission delay may also be calculated based on the transmission probability and post-transmission failure probability. According to this method, the performance such as the throughput and the packet transmission delay can be evaluated in a wireless LAN system even before the wireless LAN system is constructed.

Method and apparatus for evaluating performance of wireless LAN system

A communication path designing method and device includes creating a path candidate use device function and condition to produce a constraint expression serving as a constraint condition to select a communication path that can satisfy a traffic demand, creating a first link receiving condition to produce a constraint expression serving as a constraint condition based on a resource of a network to be shared according to a plurality of service classes, creating a second link receiving condition to produce an objective function to be used as a reference to select a communication path, and optimizing the communication path by solving a mathematical programming problem made up of the above various constraint expressions and objective functions.

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Tokyo, Japan

Takashi Shiraki