Taiki Wada

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We propose a method that constructs a hierarchy of words from a set of given documents automatically and dynamically. Given a query, the system retrieves the set of documents that satisfy the query, and the related words are extracted automatically, according their document frequencies. Then a hypernym relations of these related words are obtained using(More)
We propose an optimization method for minimizing energy consumption in DCelectrified railways where the trains are fitted with regenerative brakes. Reduction in energy consumption is achieved by controlling the voltage at the substations in real time. Conditional constraints are employed to model the behavior of trains and substations. This allows us to(More)
The maximum capacity, the amount of maximal electric charge that a battery can store, not only indicates the state of health, but also is assumed in numerous methods for state of charge estimation. This paper proposes an alternative approach to perform the online estimation of the maximum capacity by solving the recursive total least square (RTLS) problem.(More)
We focus on a challenging trial of a Look-Change mixed reality (MR) space. Look refers to perceived ambience of an image created by illumination and color tone. Regarding the Look-Change, we have been working on a relighting technique which allows MR space to have additional virtual illumination. Furthermore, we demonstrate a photorealistic approach to(More)
This novel demonstration provides the ultimate nightmare experience. Virtual ghosts depicted by first-of-its-kind technology, scary sounds, and visual mixed-reality experiences attack visitors in a dark, spooky Japanese room. Ghosts are luridly dramatized using relighting techniques, and visitors are terrified by various gimmicks in the room.
We propose an optimization method for minimizing energy consumption in DCelectrified railways where the trains are fitted with regenerative brakes. Reduction in energy consumption is achieved by controlling the voltage at the substations in real time. Conditional constraints are employed to model the behavior of trains and substations. This allows us to(More)
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