Abstract: An analysis preprocessing system is provided which is capable of rapidly passing data to means for analyzing data while preventing the data from overflowing, even if large amounts of data are transmitted from a large number of data generation sources. Data acquisition means 71 acquires a data group generated by the plurality of data generation sources. Data clipping means 72 clips each data from the data group acquired by the data acquisition means 71. Sampling means 73 samples part of the clipped data and stores the sampled data in a buffer 74. Analysis data determination means 75 determines an analysis data group which is a set of data used for analysis, from the data stored in the buffer 74.

Abstract: An analysis preprocessing system is provided which is capable of, when large amounts of data are received from a large number of data generation sources, rapidly passing those data to means for analyzing the data in order of time of generation thereof. Data acquisition means 71 acquires a data group generated by a plurality of data generation sources. Data clipping means 72 clips each data from the data group. Rearrangement control means 73 retains each clipped data therein, selects data generated prior to the corresponding data when data from a delay maximum data generation source is detected, and rearranges the selected data in order of time of generation thereof. A data storage buffer 74 stores the data rearranged in order of time of generation thereof. Analysis data determination means determines an analysis data group which is a set of data used for analysis, from the data stored in the data storage buffer 74.

Abstract: A fault tolerant computing system comprises a plurality of processing nodes interconnected by a communication medium for parallel-running identical application programs. A fault detector is connected to the processing nodes via the communication medium for periodically collecting configuration status data from the processing nodes and mutually verifying the collected configuration status data for detecting an abnormal node. In one preferred embodiment of this invention, the system operates in a version diversity mode in which the processing nodes are configured in a substantially equal configuration and the application programs are identical programs of uniquely different software versions. In a second preferred embodiment, the system operates in a configuration diversity mode in which the processing nodes are respectively configured in uniquely different configurations.

Abstract: Provided is a general-purpose map matching system enabling high-speed map matching while maintaining a precision of an analysis based on a map matching result even when event data is transmitted from numerous vehicles. The grid road generation unit 8 generates each grid obtained by the division of a region in which a road network exists into a latitude direction and a longitude direction by equal spaces based on data stored in the road network storage unit. Then, combine grids whose sets of roads passing are the same. The event grid matching unit correlates event data collected from a vehicle and a grid. When the number of pieces of event data correlated with the grid is large, the event processing priority determination unit selects a part of the data. The event road matching unit correlates the selected event data and a road in the grid.

Abstract: In a computer system, an SQL as a content of data processing request by a database independent protocol (protocol connected to a DBMS) that is issued by an application 3110 is converted from an SQL for an old DB before a migration to an SQL for a new DBMS 3200, then converted into a protocol that depends on a new DBMS 3210, and then provided to the new DBMS 3210. This operation is realized by an extension DB connection middleware 3120 that is obtained by extending a DB connection middleware that does not depend on the DBMS or an application.

Abstract: A stream data control server includes: a processable flow rate managing unit which manages a processable flow rate corresponding to an amount of data per unit time, which can be processed in each of storage units serving as storing destinations; a classified data flow rate managing unit which manages a data flow rate corresponding to an amount of data processed per unit time for each class of data to which a data priority is attached; and a storing destination control unit which controls the storing destinations of respective data based upon the processable flow rate of each of the storage units and the data flow rate for each class in such a manner that the data having higher data priorities are stored in the storage units having higher priorities within a range of the processable flow rate of each of the storage units.

Abstract: A fault tolerant computing system comprises a plurality of processing nodes interconnected by a communication medium for parallel-running identical application programs. A fault detector is connected to the processing nodes via the communication medium for periodically collecting configuration status data from the processing nodes and mutually verifying the collected configuration status data for detecting an abnormal node. In one preferred embodiment of this invention, the system operates in a version diversity mode in which the processing nodes are configured in a substantially equal configuration and the application programs are identical programs of uniquely different software versions. In a second preferred embodiment, the system operates in a configuration diversity mode in which the processing nodes are respectively configured in uniquely different configurations.