Hitachi, Ltd.

Naohiro Suzuki

Kenta Takahashi

Yasuharu Namba

Toshiyuki Ukai

Toshihiro Morisawa

Naoki Ikawa

Shuntaro Hitomi

Keita Shimasaki

Various failure rates are supposed for each facility, and an optimal maintenance plan is made. A maintenance planning apparatus includes a failure rate model generation unit that generates a failure rate model on the basis of failure probability information which is set for an O&M asset by a user, a simulation execution unit that executes simulation regarding a failure which possibly occurs in the O&M asset in a plurality of different conditions on the basis of the generated failure rate model, a KPI computation unit that computes a KPI corresponding to each of the plurality of different conditions on the basis of results of the simulation, and an analysis unit that analyzes the plurality of different conditions and KPIs respectively corresponding to the plurality of different conditions, so as to determine an optimal condition corresponding to the best KPI.

Maintenance planning apparatus and maintenance planning method

A time series data processing device for processing time series data that is a sequence of data received from a system that is a processing target over time includes a time series data search processing unit that receives, for details of the time series data and occurrence time information, a time series data search condition including events of a plurality of the time series data and an interval condition that is a condition of time intervals of the events occurring, and changes the interval condition using an allowable time lag that is allowable time of a set time lag in a transmission source of the time series data to thereby reflect the set time lag in the time series data search condition; and a data monitoring unit that monitors the time series data received from the system that is the processing target, using the time series data search condition changed by the time series data search processing unit.

Time series data processing device, time series data processing method, and computer-readable recording medium storing time series data processing program

A stream data processing apparatus creates a plurality of partition data on the basis of stream data, and distributes the partition data to a plurality of computers. Specifically, the stream data processing apparatus acquires from the stream data a data element group that is configured in the number of data elements based on the processing capability of the partition data destination computer, and decides an auxiliary data part of this data element group based on a predetermined value. The stream data processing apparatus creates partition data that include the acquired data element group and END data. The data element group is configured from the auxiliary data part and a result usage data part.

Distributed processing of partitioned stream data including data element group and end data

An operation management program collects a query status table of a migration-source agent processing program and creates a server status table. The operation management program, based on the server status table, computes a migration cost for each query, and selects the query with the smallest migration cost as a migration query. Then, the operation management program migrates the selected query, using the optimum migration method.

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Tokyo, Japan

Naohiro Suzuki