Kabushiki Kaisha Toshiba

Toshiba Solutions Corporation

Toshiba Digital Solutions Corporation

Shigeru Matsumoto

Shigeaki Sakurai

Shozo Isobe

Kazuyoshi Nishi

Rumi Hayakawa

Seiji Egawa

Hideki Iwasaki

Tetsuya Hayashi

Yutaka Iino

Minoru Nishizawa

Kazuyuki Goto

Yasunari Miyabe

Kyoko Makino

Hiroyuki Suzuki

Toshihiro Yamada

Asako Inomata

Yoshimi Saito

Yasuomi Une

Koji Yakushi

Saori Nitta

Mikito Kobayashi

Eiji Nakagawa

Akinori Kamito

Shunji Hosaka

Kozo Banno

Yoshinori Masaoka

Akihiro Sakurada

A sequential data analysis apparatus extracts a pattern of two or more sets of items based on an appearance frequency of each of different sets of items in first sequential data, selects a pattern of two or more sets of items based on an appearance frequency of a sub-pattern formed of a portion of the extracted pattern, creates a related pattern including the same last set of items as and the other sets of items different from the selected characteristic pattern, calculates an evaluation value of the related pattern, creates a prediction model by organizing data of the characteristic pattern and the related pattern, and applies second sequential data to the prediction model to determine a result which the second sequential data is likely to lead to.

Sequential data analysis apparatus and program

An evaluation device of an embodiment includes a storage, a data generator, a class definer, a characteristic data divider, and an evaluator. The data generator is configured to generate a set of characteristic data from both a set of first data and at least a set of second data, the at least set of second data being associated in time information with the set of first data, the set of characteristic data representing a plurality of characteristics. The characteristic data divider is configured to divide the plurality of sets of characteristic data into a plurality of groups on the basis of the plurality of classes defined by the class definer and condition of operations included in the set of first data. The evaluator is configured to evaluate a operating state using a first model defined for each of the plurality of groups divided by the characteristic data divider.

Evaluation device, evaluation method, and evaluation program

A state analysis device includes a data classification unit, an analysis unit, and a determination unit. The data classification unit is configured to classify input data for each of a plurality of verification items associated with each of a plurality of control items. The analysis unit is configured to execute analysis associated with each combination of a plurality of control items and a plurality of verification items on the basis of data classified by the data classification unit. The determination unit is configured to comprehensively determine analysis results in units of combinations of the control items and the verification items on the basis of analysis results analyzed by the analysis unit.

State analysis device, state analysis method, and storage medium

According to one embodiment, a document analysis apparatus is an apparatus comprising first document storage circuit for storing first documents that include words, belong to respective categories constituting a hierarchical structure, and only comprise opinion documents for a desirable object, and a second document storage circuit for storing second documents that include words, belong or do not belong to the categories constituting the hierarchical structure and comprise opinion documents for the desirable object and documents other than the opinion documents, and the apparatus is configured to classify, into one of the categories constituting the hierarchical structure, the second documents that do not belong to the respective categories among the second documents stored in the second document storage circuit.

Document analysis apparatus and document analysis program

A causal analysis device according to an embodiment includes an extractor, a counter, a calculator, and a generator. The extractor performs extraction from combination data in which an incident and one or a plurality of factors causing the incident are associated with each other in accordance with occurrence of combination data. The counter counts the number of occurrences of the incident or the number of occurrences of a combination of the plurality of factors on the basis of a combination of the incident and the factors included in the extracted combination data. The calculator calculates an index value that corresponds to the combination of the incident and the factors and changes in accordance with the number of occurrences of the combination of the incident and the factors on the basis of a result of the counting of the counter. The generator generates an image in which an image indicating the index value calculated by the calculator for each combination of the incident and the factors is associated with the combination of the incident and the factors.

Causal analysis device, causal analysis method, and non-transitory computer readable storage medium

A data analysis supporting apparatus according to an embodiment comprises a variable-type determining device, a variable-variation generating device, and a variable-contribution rate determining device. The variable-type determining device determines the type of each variable. The variable-variation generating device generates variations of each variable in accordance with the variable type determined and with a variable variation rule that defines a method of generating the variations of each variable of any type. The variable-contribution rate determining device calculates the rate at which the variations and analysis data contribute to the objective variable, and determines, from the rate, whether the variations should be used or deleted.

Data analysis supporting apparatus

A data analyzing apparatus of an embodiment generates a format variation, analytical algorithm name, and analytical parameter not stored in a first storage device, and executes analysis. The data analyzing apparatus determines whether the application accuracy is lower than the knowledge model accuracy. If the determination result is 'not lower', the data analyzing apparatus reactivates a format variation generating device and an analytical parameter generating device. If the determination result is 'lower', the data analyzing apparatus reads out a format variation and knowledge model name associated with the highest priority order in the first storage device, and executes analysis.

Data analyzing apparatus and program

Provided is a knowledge extracting apparatus for extracting knowledge information related to a knowledge-extraction target from an electronic document distributed continually in a state where the electronic document is not associated with the knowledge-information extraction target. A knowledge extracting apparatus according to one embodiment is a knowledge extracting apparatus including: an information receiving section for receiving an electronic document; a knowledge extracting section for extracting a concept from the electronic document based on a target word to extract knowledge information and a clue word to extract knowledge information and forming knowledge information in which the concept thus extracted and the target word are associated with each other; a storage section for storing the knowledge information thus extracted; and an information analysis section for, after the knowledge information is stored, analyzing the electronic document based on the knowledge information in the storage section.

Forming knowledge information based on a predetermined threshold of a concept and a predetermined threshold of a target word extracted from a document

According to one embodiment, a topic extracting apparatus extracts each term from a target document set, and calculates an appearance frequency of each term and a document frequency that each term appears. The topic extracting apparatus acquires a document set of appearance documents with respect to each extracted term, calculates a topic degree, extracts each term whose topic degree is not lower than a predetermined value as a topic word, and calculates freshness of the extracted topic word based on an appearance date and time. The topic extracting apparatus presents the extracted topic words in order of the freshness and also presents the number of appearance documents of each presented topic word per unit span.

Topic extraction apparatus and program

The present invention provides a turbine system which can start a turbine, while controlling thermal stress generated in a turbine rotor and an expansion difference, due to thermal expansion, between a casing and the turbine rotor, to be lower than defined values, respectively. The turbine system () according to the present invention includes the turbine () having a casing () and the turbine rotor () rotatably attached to the casing (), and a main steam pipe () connected to an upstream portion of the casing (). A control valve () adapted for controlling a flow rate of steam discharging into the casing () is provided with the main steam pipe (), and a power generator () is coupled with the turbine rotor (). Additionally, a starting control system () is adapted for controlling the control valve (), while obtaining an operational amount of the control valve ().

Turbine system and method for starting-controlling turbine system

An electric-power-generating-facility operation management support system includes an analyzing unit that calculates operation plan creating basic information based upon received information with regard to lifespan calculating expressions, present electric-power market information, and operation-history information with regard to an electric power generation. The electric-power-generating-facility operation management support system also includes an operation plan creating unit that calculates and outputs operational conditions of electric power generating facilities as a created operation planning based upon the operation plan creating basic information calculated by the analyzing unit. The analyzing unit includes a lifespan-consumption-costs calculating unit that calculates lifespan consumption costs of the electric power generating facilities. In addition, the analyzing unit includes a reserve-electric-power-price estimating unit that estimates a market price of reserve electric power. The analyzing unit further includes a reserve-electric-power supply -probability estimating unit that estimates a probability of a supply of the reserve electric power.

Electric-power-generating-facility operation management support system, electric-power-generating-facility operation management support method, and program for executing operation management support method on computer

An electric-power-generating-facility operation management support system includes a condition-input unit inputting costs of electric power generation in electric power generating facilities, probability distribution of predicted values of the demand for electric power, and probability distribution of predicted values of the transaction price of power on the market. An optimal-operational-condition calculating unit calculates the performance of power generation of the power generating facilities based upon the costs of power generation, the probability distribution of predicted values of the demand for power and the probability distribution of predicted values of the transaction price of power on the market, input from the condition-input unit so as to obtain the optimal operational conditions which exhibit the maximum performance of power generation A risk estimating unit calculates and estimates a risk value of damage of the optimal operation under the optimal operational conditions. A calculation-result display unit displays the optimal operational conditions and the risk-estimation results.

Electric-power-generating-facility operation management support system, electric-power-generating-facility operation management support method, and program for executing support method, and program for executing operation management support method on computer

An operation support system for a power plant includes an input unit for inputting measured data of the power plant over a communication network, a data evaluating unit for quantitatively evaluating performance deterioration of the power plant and component equipment thereof and creating operation support data base on the input measured data, and an output unit for outputting the operation support data to a computer for confirming operation support data connected thereto over the communication network.

Growing community of inventors

Nishitokyo, Japan

Shigeru Matsumoto