Results 221 to 230 of about 678,745 (265)
Some of the next articles are maybe not open access.
Single-tree method for grammar-directed search
1999 IEEE International Conference on Acoustics, Speech, and Signal Processing. Proceedings. ICASSP99 (Cat. No.99CH36258), 1999We present a very fast and accurate fast-match algorithm which, when followed by a regular beam search restricted within only the subset of words selected by the fast-match, can speed up the recognition process by at least two orders of magnitude in comparison to a typical single-pass speech recognizer utilizing the Viterbi (or beam) search algorithm ...
L. Nguyen, R. Schwartz
openaire +1 more source
Direct Searches: Interferometric Methods
1999After giving a brief introduction to optical and infrared interferometry, its observables and theoretical capabilities, we focus on the specific problem of imaging faint point-like companions close to very bright sources with large interferometric arrays.
openaire +1 more source
Earthquake Location, Direct, Global-Search Methods
2009Arrival time The time of the first measurable energy of a seismic phase on a seismogram. Centroid The coordinates of the spatial or temporal average of some characteristic of an earthquake such as surface shaking intensity or moment release. Data space If the data are described by a vector d, then the data spaceD is the set of all possible values of d.
Anthony Lomax +2 more
openaire +1 more source
Assessing a search direction within a truncated-newton method
Operations Research Letters, 1990Truncated Newton methods for nonlinear optimization compute a search direction by approximately solving the Newton equations, typically via the conjugate gradient algorithm. The search direction is usually assessed using the norm of the residual. This short paper shows that the norm of the residual can be an arbitrarily poor predictor of a good search ...
Nash, Stephen G., Sofer, Ariela
openaire +1 more source
Searching for planets: direct methods
2004We now turn to methods of finding planets beyond the Solar System, particularly habitable worlds. In this chapter we shall concentrate on direct methods, where we attempt to detect the radiation reflected or emitted by the planet. We could then analyse this radiation to learn about the planet and see whether it is habitable and indeed inhabited. Direct
openaire +1 more source
Parallel Line Search in Method of Feasible Directions
Optimization and Engineering, 2004In this paper the line search procedure within the method of feasible directions is parallelized and used in the solution of constrained structural optimization problems. As the objective function is linear in the variables, the step size problem reduces to a zero finding problem. That is, the step size is the distance along the direction vector to the
Ashok D. Belegundu +4 more
openaire +1 more source
Search directions for interior linear-programming methods
Algorithmica, 1991This paper examines several internal search directions for linear programming that were proposed since Karmarkar published his algorithm. The resulting algorithms are classified and compared, to be then imbedded in a common framework using a bidirectional search procedure on the original feasible set.
openaire +2 more sources
Rejoinder: Direct Search Method for Finding Negative Cycles
Management Science, 1972We would like first to stress that we have not “claimed” wide applicability for this method except for the results that we have given. Our motivation for carrying out this work was to find a method of locating and tracing negative cycles to use as a subroutine in Klein's [Klein, M. 1967.
M. Florian, P. Robert
openaire +1 more source
Patterson search – an alternative to direct methods
Acta Crystallographica Section A Foundations of Crystallography, 1983On the basis of the solution of six unknown structures by a real-space Patterson search the merits and limitations of the method are discussed. It is shown how chemical information can be used to provide a reliable starting point for direct methods when there is no automatic solution.
openaire +1 more source