Hitachi, Ltd.

Ryota Mibe

Kiyoshi Yamaguchi

Yasunori Hashimoto

Shuhei Nojiri

Kentaro Yoshimura

Hirofumi Danno

Katsumi Kawai

Yasunari Takai

Ryosuke Tsuchiya

Tarou Sakisaka

Sadahiro Ishikawa

Toshihiko Nakano

Satoshi Ohkubo

Yusuke Jin

Keishi Ooshima

A prediction rationale analysis apparatus includes a prediction model that stores prediction models designed or trained to solve common problems, a prediction execution part that makes a prediction on the prediction target based on each prediction model to derive a model prediction result, a prediction rationale analyzer that identifies a set of prediction models based on which the model prediction result identical or approximate to the external prediction result is derived from the prediction target, and infers, as a prediction rationale for the external prediction result, a property common to the prediction models belonging to the set, and a prediction rationale difference analyzer that compares a property of any prediction model with the prediction rationale for the external prediction result to derive a prediction rationale difference indicating a difference in prediction rationale between the prediction model and the external prediction, and outputs information based on the prediction rationale difference.

Prediction rationale analysis apparatus and prediction rationale analysis method

The present invention has an object to analyze, regarding an existing system without a source code, the relationship between input items and internal system processing with respect to output items and present the analysis results to a user. An existing system processing specification extractor is an apparatus for making an existing system operate and analogizing input items of the existing system and internal system processing patterns without performing analysis of implementation and includes: an output data change information acquisition unit that classifies changes of output data associated with input to the existing system on the basis of types of changes of each output element; and an internal system processing specifying unit that combines the classifications obtained by making different input to the existing system and specifies a type of processing based on a usage pattern of an input item value.

Existing system processing specification extractor

A test DB data generation method for generating a database for testing, which approximates an existing database, the test DB data generation apparatus comprising: extracting distribution information of values of each column of the existing database; extracting column dependency information of the existing database; and generating test DB data based on the distribution information and the column dependency information.

Test DB data generation apparatus

In order to realize a method for analyzing an impact of change with less misidentification and missing, an apparatus for analyzing an impact of change for investigating a change impact range caused by a change in requirements and specifications includes: a storage unit that stores design information and keywords; an input unit that inputs a trace condition including the design information representing an origin of a change impact analysis in design conditions stored in the storage unit and the keywords stored in the storage unit; a CPU that receives the trace condition including the design information representing the origin of the change impact analysis and the keywords from the input unit, and calculates an influence score representing a probability of the influence caused by the change in the requirements and the specifications for each of the design information; and a display unit that outputs a result calculated by the CPU.

Method for analyzing impact of change and its apparatus

A database analyzer includes a data sorting unit sorting a data group acquired from an analysis target database based on data values in a table column and storing it as analysis target data in a storage unit; a data pattern creation processing unit creating a group for each data value based on differences between the data values and storing a data pattern in the storage unit; a data pattern judgment processing unit for judging validity of the data pattern; and a data pattern transformation processing unit for reconstructing the data pattern with respect to constituent elements of each group included in the data pattern by transforming each group in accordance with a specified conversion rule for converting the constituent elements, which are conceptually similar to each other, into the same constituent element, and storing it in the storage unit if a negative result is obtained for the validity judgment.

Database analyzer and database analysis method

A device and method automatically generate a program for buffering differences based on characteristics of a component. A buffer program for buffering differences of the way to use a component during different software environments is automatically generated. The device includes a controller for executing automatic generation of the buffer program, a memory including control information and a processing program, an input device for inputting the processing content of the component, and an output device for outputting the automatically generated buffer program. The memory records a plurality of forms for buffering the component as the control information and the controller extracts characteristic information based on the processing content of the component and records the extracted characteristic information as control information in the memory, selects a specified form based on the characteristic information, and generates the buffer program based on the selected form and the characteristic information.

Automatic program generation device and automatic program generation method

An information control system capable of precisely defining and executing a condition for stipulating a state of an apparatus to be controlled. A storage unit stores an object definition table storing data items of a structure and a state of an object constituting a controlled system, and an actor definition table storing a monitor condition of an object state, an object monitor item and a setting value, as an actor as a control element for monitoring and controlling the object. A processing unit receives an object state from the controlled system, and when the state changes, transmits changed state value to the actor. The actor then refers to the actor definition table to judge whether the monitor condition is satisfied, and if satisfied, changes the setting value of the monitor condition and transmits a control command for setting value change to the object corresponding to the monitor item.

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Tokyo, Japan

Ryota Mibe