Results 1  10
of
3,683
Optimized Expansion for Density Matrix
"... Abstract. The optimized expansion is applied to the quantum mechanical evolution amplitude, providing approximations to the density matrix and to the particle density. For the anharmonic oscillator and for the electron in the hydrogen atom the first order approximations to particle density agree we ..."
Abstract
 Add to MetaCart
Abstract. The optimized expansion is applied to the quantum mechanical evolution amplitude, providing approximations to the density matrix and to the particle density. For the anharmonic oscillator and for the electron in the hydrogen atom the first order approximations to particle density agree
Greedy Function Approximation: A Gradient Boosting Machine
 Annals of Statistics
, 2000
"... Function approximation is viewed from the perspective of numerical optimization in function space, rather than parameter space. A connection is made between stagewise additive expansions and steepest{descent minimization. A general gradient{descent \boosting" paradigm is developed for additi ..."
Abstract

Cited by 1000 (13 self)
 Add to MetaCart
Function approximation is viewed from the perspective of numerical optimization in function space, rather than parameter space. A connection is made between stagewise additive expansions and steepest{descent minimization. A general gradient{descent \boosting" paradigm is developed
Matching pursuits with timefrequency dictionaries
 IEEE Transactions on Signal Processing
, 1993
"... AbstractWe introduce an algorithm, called matching pursuit, that decomposes any signal into a linear expansion of waveforms that are selected from a redundant dictionary of functions. These waveforms are chosen in order to best match the signal structures. Matching pursuits are general procedures t ..."
Abstract

Cited by 1671 (13 self)
 Add to MetaCart
matching pursuit isolates the signal structures that are coherent with respect to a given dictionary. An application to pattern extraction from noisy signals is described. We compare a matching pursuit decomposition with a signal expansion over an optimized wavepacket orthonormal basis, selected
The Contourlet Transform: An Efficient Directional Multiresolution Image Representation
 IEEE TRANSACTIONS ON IMAGE PROCESSING
"... The limitations of commonly used separable extensions of onedimensional transforms, such as the Fourier and wavelet transforms, in capturing the geometry of image edges are well known. In this paper, we pursue a “true” twodimensional transform that can capture the intrinsic geometrical structure t ..."
Abstract

Cited by 513 (20 self)
 Add to MetaCart
link between the developed filter bank and the associated continuousdomain contourlet expansion via a directional multiresolution analysis framework. We show that with parabolic scaling and sufficient directional vanishing moments, contourlets achieve the optimal approximation rate for piecewise smooth
Estimating the Support of a HighDimensional Distribution
, 1999
"... Suppose you are given some dataset drawn from an underlying probability distribution P and you want to estimate a "simple" subset S of input space such that the probability that a test point drawn from P lies outside of S is bounded by some a priori specified between 0 and 1. We propo ..."
Abstract

Cited by 783 (29 self)
 Add to MetaCart
of the weight vector in an associated feature space. The expansion coefficients are found by solving a quadratic programming problem, which we do by carrying out sequential optimization over pairs of input patterns. We also provide a preliminary theoretical analysis of the statistical performance of our
Agency costs of free cash flow, corporate finance and takeovers
 American Economic Review
, 1986
"... The interests and incentives of managers and shareholders conflict over such issues as the optimal size of the firm and the payment of cash to shareholders. These conflicts are especially severe in firms with large free cash flows—more cash than profitable investment opportunities. The theory develo ..."
Abstract

Cited by 2311 (11 self)
 Add to MetaCart
The interests and incentives of managers and shareholders conflict over such issues as the optimal size of the firm and the payment of cash to shareholders. These conflicts are especially severe in firms with large free cash flows—more cash than profitable investment opportunities. The theory
Optimization of ObjectOriented Programs using Static Class Hierarchy Analysis
, 1995
"... Abstract. Optimizing compilers for objectoriented languages apply static class analysis and other techniques to try to deduce precise information about the possible classes of the receivers of messages; if successful, dynamicallydispatched messages can be replaced with direct procedure calls and po ..."
Abstract

Cited by 379 (18 self)
 Add to MetaCart
and potentially further optimized through inlineexpansion. By examining the complete inheritance graph of a program, which we call class hierarchy analysis, the compiler can improve the quality of static class information and thereby improve runtime performance. In this paper we present class hierarchy analysis
OPTIMAL EXPANSIONS OF DISCRETETIME VOLTERRA MODELS USING LAGUERRE FUNCTIONS
 AUTOMATICA
, 2004
"... This work is concerned with the optimization of Laguerre bases for the orthonormal series expansion of discretetime Volterra models. The aim is to minimize the number of Laguerre functions associated with a given series truncation error, thus reducing the complexity of the resulting finite dimensio ..."
Abstract

Cited by 14 (4 self)
 Add to MetaCart
This work is concerned with the optimization of Laguerre bases for the orthonormal series expansion of discretetime Volterra models. The aim is to minimize the number of Laguerre functions associated with a given series truncation error, thus reducing the complexity of the resulting finite
OPTIMAL EXPANSION OF WATER QUALITY MONITORING NETWORK BY FUZZY OPTIMIZATION APPROACH
, 2003
"... Abstract. River reaches are frequently classified with respect to various mode of water utilization depending on the quantity and quality of water resources available at different location. Monitoring of water quality in a river system must collect both temporal and spatial information for compariso ..."
Abstract
 Add to MetaCart
an advanced systems analysis technique via an integrated simulationoptimization approach to meet the ultimate goal. This article presents an optimal expansion strategy of water quality monitoring stations for fulfilling a longterm monitoring mission under an uncertain environment. The planning objectives
Results 1  10
of
3,683