Nippon Telegraph and Telephone Corporation

Nec Corporation

Mitsubishi Electric Corporation

Ntt Corporation

Yoichi Matsuo

Keishiro Watanabe

Ken Nishimatsu

Takehiro Kawata

Yasuhiro Ikeda

Kazuhisa Yamagishi

Akio Watanabe

Ryoichi Kawahara

Tatsuaki Kimura

Hiroki Ikeuchi

Kenta Takeshima

An information processing apparatus including: an experience quality estimation unit that estimates an experience quality value when changing any index value of a plurality of index values included in viewing history data of an image; a contribution degree calculation unit that calculates a contribution degree of each index value included in the plurality of index values to a contribution degree on the basis of the estimated experience quality value; and a contribution degree output unit that outputs information indicating the contribution degree.

Information processing apparatus, analysis method and program

An information processing apparatus including: an experience quality estimation unit that estimates an experience quality value by replacing a plurality of index values included in viewing history data of an image with an index value corresponding to a case other than any one of a plurality of predetermined bit rates; a contribution degree calculation unit that calculates a contribution degree of each bit rate included in the plurality of bit rates to an experience quality value on the basis of the estimated experience quality value; and a contribution degree output unit that outputs information indicating the contribution degree.

A model construction apparatus according to an embodiment includes a first collection unit that collects pieces of first observed data related to a communication network system that is a target for estimation of a location or a cause of an abnormality; a second collection unit that collects pieces of second observed data related to a plurality of services provided by the communication network system; and a model construction unit that constructs a causal model for estimating the location or the cause of the abnormality and an abnormal service among the plurality of services, using the pieces of first observed data and the pieces of second observed data.

Model construction apparatus, estimation apparatus, model construction method, estimation method and program

A failure effects estimating device includes an input unit that inputs a log and a traffic amount obtained from a communication system when an abnormality occurs, an estimating unit that estimates a failure effects amount in the communication system, on the basis of the log and the traffic amount, and an output unit that outputs the failure effects amount estimated by the estimating unit.

Failure influence estimation apparatus, failure influence estimation method and program

A recovery support apparatus includes an index value calculation means which calculates a predetermined index value with respect to a recovery work sequence on the basis of the recovery work sequence indicating a work procedure for recovery from an abnormality that has occurred in an apparatus group constituting a communication network, and an output means which outputs the index value calculated by the index value calculation means to a predetermined output destination.

Recovery support apparatus, recovery support method and program

An anomaly location identification device includes a determination unit configured to determine presence or absence of an anomaly by inputting part or all of information items output from a plurality of devices into an anomaly detection algorithm; a calculation unit configured to calculate, in response to a determination made by the determination unit that an anomaly is present, with respect to one of the information items, an index indicating a degree of contribution to the anomaly; and an identification unit configured to perform calculation by an analysis algorithm using a causal model receiving the index as input, to identify an anomalous device, to improve the precision and calculation speed related to identification of an anomaly location.

Anomaly location identification device, anomaly location identification method, and program

A power conversion device includes a wire connected to an electrical component, a casing to accommodate therein the electrical component, the casing being provided with an opening through which the wire is led out, a cover component removably attached to an exterior of the casing to cover the opening, and provided with a wiring hole through which the wire passes, and a pressing plate that is a fixing component to fix the wire inside the cover component. The cover component is attachable in two or more different orientations.

Power conversion device

According to this invention, in a temperature abnormality detector, an electronic apparatus can be continuously operated without halt, a failure of a sensor can be reliably detected, and power supply is interrupted to protect the electronic apparatus when the temperature of the electronic apparatus really reaches a high temperature. In addition, a highly reliable electronic apparatus which is not halted by erroneous detection can be provided, and repairing of the apparatus can be completed within a short time. Even when the apparatus fails, it can be easily restored. The detector includes a plurality of temperature sensors arranged on an electronic part, a switching circuit for receiving output signals from the temperature sensors, a converting circuit for converting the output signals from the temperature sensors into temperature values, a microprocessor, output circuits of the microprocessor, and a ROM for storing a program for operating the microprocessor.

Temperature abnormality detector for electronic apparatus

A device for detecting errors of a plurality of electric parts which are built in electronic equipment has error detecting circuits in the form of relays. The relays are interconnected one-to-one to various electric parts which are the subject of error detection, while display circuits are interconnected one-to-one to the relays. Output signals of the relays are fed to a reporting circuit without the intermediary of the display circuits. When an electric part is free from an error and only a display circuit associated therewith has failed, no error signal is fed to the reporting circuit. Only when any of the electric parts has really failed, an error signal is delivered to the reporting circuit to cause the latter to take an adequate measure such as the interruption of power supply.

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Tokyo, Japan

Yoichi Matsuo