rithm, we show a numerical experiment. A uniform linear array of 10 sensors is used. The sensor spacing is half of the wavelength corresponding to the upper band edge of the speech. The sampling frequency is 16kHz, and the frame length is 512 samples. The target speaker moves in constant angular velocity from -20 to 40”, while the interfering speaker is stationary at 0”. Fig. 2 shows the origin...

This paper makes two contributions. First, we introduce a model for evaluating the performanceof data allocation and replication algorithms in distributed databases. The model is comprehen-sive in the sense that it accounts for I/O cost, for communication cost, and, because of reliabilityconsiderations, for limits on the minimum number of copies of the object. The model captures...

The paper presents a new algorithm for parametric image alignment which when given any local match measure applies global estimation directly to the lo cal match measure data without rst going through an intermediate step of local ow estimation This algo rithm can be applied to any local match measure such as correlation normalized correlation squared or ab solute brightness di erences statisti...

We propose a new class of learning algorithms that combines variational approximation and Markov chain Monte Carlo (MCMC) simu­ lation. Naive algorithms that use the vari­ ational approximation as proposal distribu­ tion can perform poorly because this approx­ imation tends to underestimate the true vari­ ance and other features of the data. We solve this problem by introducing more so­ phistic...

The paper presents a parallelized algorithm for seg mentation of D range images The segmented image is useful as an input to higher level image processing tasks The algorithm is implemented on a mesh con nected multiprocessor machine the MasPar series of massively parallel computers A dimensional hier archical data distribution scheme is used to allocate the image pixels on the machine The orig...

Problems that are not aligned with the coordinate system can present difficulties to many 15 optimization algorithms, including evolutionary algorithms, by trapping the search on a ridge. The ridge problem in single-objective optimization is understood, but until now 17 little work has been done on understanding this issue in themulti-objective domain.Multiobjective problemswithparameter intera...

In the authors introduced a technique which enabled them to solve the parametric minimum cycle problem with a xed number of parameters in strongly polynomial time In the current paper we present this technique as a general tool In order to allow for an independent reading of this paper we repeat some of the de nitions and propositions given in Some proofs are not repeated however and instead we...

The advent of multipoint multicast based applica tions and the growth and complexity of the Internet has complicated network protocol design and testing In this paper we present a method for automatic synthesis of worst and best case scenarios for mul tipoint protocol performance evaluation As a case study we analyze variants of the timer suppression mechanism used in multipoint protocols in th...

7 Abstract This article deals with the problem of the 8 design of a control-based demand-assignment algorithm for 9 a satellite access network using a Markov modulated chain 10 traffic prediction model. The objective is to guarantee a 11 target Quality of Service (QoS) to Internet traffic, while 12 efficiently exploiting the air interface. The proposed algo13 rithm is in charge of dynamically p...

A theory of manual adaptive control requires an understanding of the mechanisms by which human op erators alter their control strategies in response to changes in control conditions Here we show that signi cant asym metries in adaptation occur in a manual tracking task when well trained subjects are exposed to situations in which track preview lag of the controlled system or track bandwidth gra...