Nearest-neighbor search (NN-search) plays a key role for content-based retrieval. As a first contribution, this article shows that NN-search is a meaningful implementation of similarity search, even if features are high-dimensional. But NN-search over high-dimensional features is of linear complexity and query response times have not been satisfactory for large collections of multimedia objects...

H. Haberzettl1,* and K. Nakayama2,3,† 1Institute for Nuclear Studies and Department of Physics, The George Washington University, Washington, DC 20052, USA 2Department of Physics and Astronomy, University of Georgia, Athens, GA 30602, USA 3Institut für Kernphysik and Jülich Center for Hadron Physics, Forschungszentrum Jülich, 52425 Jülich, Germany (Received 8 November 2010; revised manuscript r...

Handwriting recognition has been one of the active and challenging research areas in the field of image processing and pattern recognition. It has numerous applications that includes, reading aid for blind, bank cheques and conversion of any hand written document into structural text form. Neural Network (NN) with its inherent learning ability offers promising solutions for handwritten characte...

Commonly used content-retrieval systems focus on the problem of finding the nearest neighbor (NNsearch) for a given single query object out of a database of media objects [1]. However, there are only few attempts [2,3] that realize join operations on two multimedia tables, where the multimedia data components are represented by their respective feature vectors. The necessity of using multimedia...

In earlier papers we studied direct limits (G,K) = lim −→ (Gn,Kn) of two types of Gelfand pairs. The first type was that in which the Gn/Kn are compact riemannian symmetric spaces. The second type was that in which Gn = Nn ⋊ Kn with Nn nilpotent, in other words pairs (Gn,Kn) for which Gn/Kn is a commutative nilmanifold. In each we worked out a method inspired by the Frobenius–Schur Orthogonalit...

This paper is concerned with the control of nonlinear pure-feedback systems with unknown nonlinear functions. This problem is considered di/cult to be dealt with in the control literature, mainly because that the triangular structure of pure-feedback systems has no a/ne appearance of the variables to be used as virtual controls. To overcome this di/culty, implicit function theorem is 0rstly exp...

The two quotes above suggest alternate ideas about the sources of happiness. The first (written around AD 180) is nn Aristotelian notion. Happiness is a way of living, not a state. The second quote (written some 1500 years later) suggests ideas about the sources of happiness perhaps more akin to the way that we tend to view [hem today. Happiness is about conviviality, warmth. food (and perhaps ...