Takahito Kanamori

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The effects of IT on the decision making structure of firms has been a topic of debate for decades. On the one hand, IT increases the information available to top management, and the coordination advantages that it provides may lead firms to centralize decision making. On the other hand, IT makes it possible to disseminate global information of the firm to(More)
A density ratio is defined by the ratio of two probability densities. We study the inference problem of density ratios and apply a semiparametric density-ratio estimator to the two-sample homogeneity test. In the proposed test procedure, the <i>f</i>-divergence between two probability densities is estimated using a density-ratio estimator. The <i>f</i>(More)
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