S. Sakurai

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IntroductIon Owing to the progress of computer and network environments, it is easy to collect data with time information such as daily business reports, weblog data, and physiological information. This is the context in which methods of analyzing data with time information have been studied. This chapter focuses on a sequential pattern discovery method(More)
This paper proposes a method that discovers various sequential patterns from sequential data. The sequential data is a set of sequences. Each sequence is a row of item sets. Many previous methods discover frequent sequential patterns from the data. However, the patterns tend to be similar to each other because they are composed of limited items. The(More)
Asaoka' method is a well-known method to predict settlement, and it is widely used for practical projects. Since Asaoka's method requires that the ground must be uniform, a problem in an un-uniform plane such as Haneda arises with respect to the application of Asaoka's method. This paper describes a method for an execution plans, experts choose the(More)
We propose a method to self-organize a user model for realizing a text search system. The method self-organizes a model from phoneme sequences and their texts using 6 basic rules. An inference method associated with the self-organized model searches texts corresponding to inputted phoneme sequences. Experiments using 50 voice waveforms of 10 speakers show(More)
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