Category Learning Atsushi Hashimoto and Haruo Hosoya Department of Computer Science The University of Tokyo 7-3-1 Hongo, Bunkyo-ku, Tokyo, Japan Abstract. Motivated by a neurophysiological experiment on prefrontal cortex, we study a scheme for learning abstract categories. An abstract category represents a set of vectors that are identical to each other modulo substitution, e.g., ’ABAB’, ’BABA’...

The Wiener index is a graph invariant that has found extensive application in chemistry. In addition to that a generating function, which was called the Wiener polynomial, who’s derivate is a q-analog of the Wiener index was defined. In an article, Sagan, Yeh and Zhang in [The Wiener Polynomial of a graph, Int. J. Quantun Chem., 60 (1996), 959969] attained what graph operations do to the Wiene...

In the literature of time series analysis since Whittle (1953), many authors (for example, Dunsmuir and Hannan (1976), Dunsmuir (1979), and Hosoya and Taniguchi (1982)) have considered an approach using Whittle’s log-likelihood, which is an approximation of Gaussian log-likelihood of the data, and have developed the asymptotic properties of an estimator that maximizes Whittle’s loglikelihood. T...

Double hexagonal chains” can be considered as benzenoids constructed by successive fusions of successive naphthalenes along a zig-zag sequence of triples of edges as appear on opposite sides of each naphthalene unit. In this paper, we discuss the numbers of k-matchings and k-independent sets of double hexagonal chains, as well as Hosoya indices and Merrifield–Simmons indices, and obtain some ex...

This paper investigates the effects of wealth−enhanced social status using an optimizing monetary growth model with non−separable utility function between consumption and wealth. Within this framework, we first arrive a conclusion that, in the case of no wealth effects, an increase in the rate of money growth does not stimulate the steady−state growth rate. Moreover, in the case of existing wea...

MYOSIN MOTORS AND NOT ACTIN COMETS ARE MEDIATORS OF THE ACTIN-BASED GOLGI-TO-ER PROTEIN TRANSPORT Juan M. Durán, Ferran Valderrama, Susana Castel, Juana Magdalena, Mónica Tomás, Hiroshi Hosoya, Jaime Renau-Piqueras, Vivek Malhotra, and Gustavo Egea Departament de Biologia Cel.lular i Anatomia Patològica, Facultat de Medicina, Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), U...

Seibu Mochizuki, Benjamin Dieplinger, Evi Trenkwalder, Horst Schweer, Florian Kronenberg, Katsunori Ikewaki, Juergen R. Schaefer, Michael E. Frischmann, Keio Okubo, Tatsuo Hosoya, Lipoprotein in Hemodialysis Patients as Potential Cause of Premature Atherosclerosis Delayed In Vivo Catabolism of Intermediate-Density Lipoprotein and Low-Density Print ISSN: 1079-5642. Online ISSN: 1524-4636 Copyrig...