Sciweavers

SIAMJO
2002
73views more  SIAMJO 2002»
13 years 4 months ago
Nonlinearly Constrained Best Approximation in Hilbert Spaces: The Strong CHIP and the Basic Constraint Qualification
We study best approximation problems with nonlinear constraints in Hilbert spaces. The strong "conical hull intersection property" (CHIP) and the "basic constraint q...
Chong Li, Xiao-Qing Jin
SIAMJO
2002
92views more  SIAMJO 2002»
13 years 4 months ago
Generalized Bundle Methods
We study a class of generalized bundle methods for which the stabilizing term can be any closed convex function satisfying certain properties. This setting covers several algorithm...
Antonio Frangioni
SIAMJO
2002
96views more  SIAMJO 2002»
13 years 4 months ago
A New Efficient Large-Update Primal-Dual Interior-Point Method Based on a Finite Barrier
We introduce a new barrier function which is not a barrier function in the usual sense: it has finite value at the boundary of the feasible region. Despite this, its iteration bou...
Y. Q. Bai, Mohamed El Ghami, Cees Roos
SIAMJO
2002
87views more  SIAMJO 2002»
13 years 4 months ago
An Optimization Approach for Radiosurgery Treatment Planning
We outline a new approach for radiosurgery treatment planning, based on solving a series of optimization problems. We consider a specific treatment planning problem for a speciali...
Michael C. Ferris, Jinho Lim, David M. Shepard
SIAMJO
2002
149views more  SIAMJO 2002»
13 years 4 months ago
Semidefinite Programs: New Search Directions, Smoothing-Type Methods, and Numerical Results
Motivated by some results for linear programs and complementarity problems, this paper gives some new characterizations of the central path conditions for semidefinite programs. Ex...
Christian Kanzow, Christian Nagel
SIAMJO
2002
99views more  SIAMJO 2002»
13 years 4 months ago
Active Sets, Nonsmoothness, and Sensitivity
Nonsmoothness pervades optimization, but the way it typically arises is highly structured. Nonsmooth behavior of an objective function is usually associated, locally, with an activ...
A. S. Lewis
SIAMJO
2002
117views more  SIAMJO 2002»
13 years 4 months ago
Analysis of Generalized Pattern Searches
This paper contains a new convergence analysis for the Lewis and Torczon generalized pattern search (GPS) class of methods for unconstrained and linearly constrained optimization. ...
Charles Audet, J. E. Dennis Jr.
SIAMJO
2002
99views more  SIAMJO 2002»
13 years 4 months ago
On the Calmness of a Class of Multifunctions
The paper deals with the calmness of a class of multifunctions in finite dimensions. Its first part is devoted to various conditions for calmness, which are derived in terms of cod...
René Henrion, Abderrahim Jourani, Jir&iacut...
SIAMJO
2002
77views more  SIAMJO 2002»
13 years 4 months ago
Modifying SQP for Degenerate Problems
Most local convergence analyses of the sequential quadratic programming (SQP) algorithm for nonlinear programming make strong assumptions about the solution, namely, that the activ...
Stephen J. Wright