Nec Corporation

Nec C Orporation

Kentaro Yamasaki

Yuji Kobayashi

Takashi Nomura

Kazuhiko Isoyama

Yoshiaki Sakae

Junpei Kamimura

Koji Kida

Etsuko Katsuda

Kenichiro Fujiyama

Sawako Mikami

An information processing apparatus includes: a reach-extent extraction unit configured to extract, with use of a relationship graph representing relationships between a plurality of elements included in a system and location information that indicates, on the relationship graph, a plurality of locations in the system where anomalies have been detected, paths in the relationship graph as being reach extents, the path including a set of the elements that are directly or indirectly related to each of the plurality of locations as a source; and a shared-extent extraction unit configured to extract an influence process of an anomaly by extracting an extent that is shared in at least a prescribed number of paths among paths in the relationship graph that have been extracted as the reach extents.

Information processing apparatus and influence-process extraction method

The present invention provides an information processing device that outputs information including the data transmission relationship between elements constituting an information processing system, the information indicating the state of the information processing system. The information processing device includes a graphing means for generating a relationship graph based on an event log indicating the behavior of each of a plurality of processes operating in the system, the relationship graph having the processes as the vertices thereof and having the data transmission relationship between the vertices as the sides thereof; and a graph output means for outputting the generated relationship graph.

Information processing device and monitoring method

The present invention provides an information processing device that improves the detectability of system errors. This information processing device includes: a means that generates a state graph based on relationship change information indicating a change in the relationship between a plurality of elements included in a system, the state graph having the elements as the vertices thereof and the relationship between the elements as the sides thereof; a means that generates a normal model having the state graph as a set of conditions to be fulfilled during normal system operation, based on the relationship change information; and a means that detects system errors and outputs error information indicating detected errors, based on the state graph and the normal model.

Information processing device and error detection method

An information determination apparatus includes a first storage unit configured to store stream data pieces obtained in time sequence; a first determining unit configured to determine whether the number of stream data pieces stored in the first storage unit is at least equal to a predetermined value; and a second determining unit configured to determine, when the number of the stream data pieces stored in the first storage unit is equal to or greater than the predetermined value, whether an individual can be identified based on a dataset composed of a plurality of the stream data pieces stored in the first storage unit, and output the dataset used for the determination and the determination result.

Information determination apparatus, information determination method and recording medium

Communication from inadmissible communication parties and communication accesses are excluded from an unspecified number of communication parties and communication accesses. A communication management system is provided with a communication device for communicating with communication parties connected through a communication network, a communication control device for controlling the communication, a communication history information memory device for storing communication history information indicative of communication history of the communication device, and a communication admissible party selecting device for selecting communication admissible parties who are admitted to communication with the communication device in accordance with the communication history information, wherein the communication control device has a communication admission control function to carry out admission control of communication from the selected communication parties.

Communication management system, communication management terminal device, communication management method and communication management program

The load of setting and managing the access rule for access control is large. Provided is an information sharing system comprising an information gathering means, a transportable storage device for storing at least first information and second information, a certified acquisition request generation means, and a certified acquisition request processing means, sheering the information gathering means gathers the first information and the second information from the transportable storage device, the certified acquisition request generation means transmits a certified acquisition request including certification information comprising at least part of the second information, and the certified acquisition request processing means determines, on the basis of the result of checking whether or not the certification information included in the received certified acquisition request matches any part of the first information, whether or not to transmit the first information to a device equipped with the certified acquisition request generation means that is a transmission source of the certified acquisition request.

Information sharing device, information sharing method and information sharing system

It is an object to provide a data logger which solves a problem in which data required to analyze a cause of occurrence of abnormality cannot be acquired. Temporary memorystores newer data among data sequentially outputted from measurerwherein the number of the newer data corresponds to a specific number of times. Managerrepeatedly calculates an index value indicative of stability of the data outputted from measurerbased on the data stored in temporary memoryat least until the index value satisfies a predetermined stability condition. Further, if manageraccepts an abnormal value trigger, managersequentially stores the data outputted from measurerin main memory. When the index value satisfying the stability condition is calculated by manager, managerstops saving the data in main memory

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Tokyo, Japan

Kentaro Yamasaki