Fumiyo N. Kondo

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This article is addressed to the problem of modeling and exploring mean value structure of large-scale time series data and time-space data. A smoothness prior modeling approach 13] is taken. In this approach, the observed series are decomposed into several components each of which are expressed by smoothness priors models. In the analysis of POS and GPS(More)
Wireless technologies have created an unprecedented opportunity for direct marketing to communicate with customers in an instantaneous, interactive and customized way. At present the number of mobile customers in the world have already exceeded 3 billion and among them two third of the customers are coming from the developing countries where there is high(More)
The purpose of this paper is to identify how the usage of mobile information services (MIS) contribute to quality of life for young Japanese users. We examined relationships between individual life domains and the domain of overall quality of life based on bottom-up spillover theory. Questionnaire surveys were conducted via online among young Japanese(More)
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