Masaki Kuwabara

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This paper evaluates the noise robustness of audio features in segment search. Active Search is well-known as a fast segment search algorithm, and it has been successfully applied to locate music or video segments (intervals) in huge databases. The noise is generated by MP3 encoding/decoding. The search accuracy is evaluated using F-measure, which is(More)
The identification problem of a fuzzy trend model is considered for long-term financial time series such as stock returns. The fuzzy trend model is based on fuzzy if-then rules. Usually the level of time series is assumed to be constant when the ARCH or GARCH model, which is the typical model for financial time series, is fitted to time series. However this(More)
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