共查询到20条相似文献,搜索用时 93 毫秒
1.
于丹 《应用数学学报(英文版)》1996,12(4):363-370
BANDWIDTHSELECTIONINNONPARAMETRICSPECTRALDENSITYESTIMATIONOFTHESTATIONARYGAUSSIANPROCESS¥YUDAN(于丹)(InstituteofSystemsScience,... 相似文献
2.
广义非线性互补问题的投影收缩法 总被引:12,自引:2,他引:10
广义非线性互补问题的投影收缩法孙德锋(中国科学院应用数学研究所)APROJECTIONANDCONTRACTIONMETHODFORTHENONLINEARCOMPLEMENTARITYPROBLEMANDITSEXTENSIONS¥SunDe-fe... 相似文献
3.
TWONEWCONSTRUCTIONSOFCARTESIANAUTHENTICATIONCODESFROMSYMPLECTICGEOMETRYGAOYOUANDZOUZENGJIA(DepartmentofBasicScience,Northeast... 相似文献
4.
陈金文 《应用数学学报(英文版)》1996,12(3):300-307
LARGEDEVIATIONSFORINFINITEDIMENSIONALANDREVERSIBLEREACTION-DIFFUSIONPROCESSESCHENJINWEN(陈金文)(DepertmentofAppliedMathematics,T... 相似文献
5.
A SUFFICIENT CONDITION FOR NON-COEXISTENCE OF ONE DIMENSIONAL MULTICOLOR CONTACT PROCESSES 总被引:1,自引:0,他引:1
ASUFFICIENTCONDITIONFORNON-COEXISTENCEOFONEDIMENSIONALMULTICOLORCONTACTPROCESSESLIUXIUFANG(刘秀芳)WANGJUN(王军)(DepartmentofMathem... 相似文献
6.
ASYMPTOTICBEHAVIOROFNONOSCILLATORYSOLUTIONSOFASECONDORDERFUNCTIONALDIFFERENTIALEQUATIONS(孟繁伟)曲阜师范大学,邮编:273165MengFanwei(QufuN... 相似文献
7.
EXISTENCE AND GLOBAL ATTRACTIVITY OF PERIODIC SOLUTION OF A MODEL IN POPULATION DYNAMICS 总被引:1,自引:0,他引:1
EXISTENCEANDGLOBALATTRACTIVITYOFPERIODICSOLUTIONOFAMODELINPOPULATIONDYNAMICS¥WENGPEIXUAN(佩萱)LIANGMIAOLIAN(梁妙莲)(DepartmentofSo... 相似文献
8.
ON A PAIR OF NON-ISOMETRIC ISOSPECTRAL DOMAINS WITH FRACTAL BOUNDARIES AND THE WEYL-BERRY CONJECTURE
ONAPAIROFNONISOMETRICISOSPECTRALDOMAINSWITHFRACTALBOUNDARIESANDTHEWEYLBERRYCONJECTURESLEEMAN,B.D.CHENHUAManuscriptrec... 相似文献
9.
BOOTSTRAP MAXIMUM LIKELIHOOD ESTIMATION OF THE PARAMETER IN SPECTRAL DENSITY OF STATIONARY PROCESSES
于丹 《应用数学学报(英文版)》1996,12(3):225-233
BOOTSTRAP MAXIMUMLIKELIHOODESTIMATIONOFTHEPARAMETERINSPECTRALDENSITYOFSTATIONARY PROCESSESYUDAN(于丹)(InstituteofSystemsScience... 相似文献
10.
A NOTE OF UNIFORM EXPONENTIAL STABILIZATION FOR NONCONTRACTIVE SEMIGROUPS UNDER COMPACT PERTURBATION
宋国柱 《数学物理学报(B辑英文版)》1994,(1)
ANOTEOFUNIFORMEXPONENTIALSTABILIZATIONFORNONCONTRACTIVESEMIGROUPSUNDERCOMPACTPERTURBATIONSongGuozhu(宋国柱)(Dept.ofMath.,Nanjing... 相似文献
11.
Comparison of Two Kinds of Prediction-Correction Methods for Monotone Variational Inequalities 总被引:8,自引:0,他引:8
Bingsheng He Xiaoming Yuan Jason J.Z. Zhang 《Computational Optimization and Applications》2004,27(3):247-267
In this paper, we study the relationship between the forward-backward splitting method and the extra-gradient method for monotone variational inequalities. Both of the methods can be viewed as prediction-correction methods. The only difference is that they use different search directions in the correction-step. Our analysis explains theoretically why the extra-gradient methods usually outperform the forward-backward splitting methods. We suggest some modifications for the two methods and numerical results are given to verify the superiority of the modified methods. 相似文献
12.
Bingsheng He Xiang Wang Junfeng Yang 《计算数学(英文版)》2009,(4):459-473
It is interesting to compare the efficiency of two methods when their computational loads in each iteration are equal. In this paper, two classes of contraction methods for monotone variational inequalities are studied in a unified framework. The methods of both classes can be viewed as prediction-correction methods, which generate the same test vector in the prediction step and adopt the same step-size rule in the correction step. The only difference is that they use different search directions. The computational loads of each iteration of the different classes are equal. Our analysis explains theoretically why one class of the contraction methods usually outperforms the other class. It is demonstrated that many known methods belong to these two classes of methods. Finally, the presented numerical results demonstrate the validity of our analysis. 相似文献
13.
We both propose and test an implicit strategy that is based on changing the search space from points to directions, which
in combination with the Differential Evolution (DE) algorithm, is easily implemented for solving boundary optimization of
a generic continuous function. In particular, we see that the DE method can be efficiently implemented to find solutions on
the boundary of a convex and bounded feasible set resulting when the constraints are bounds on the variables, linear inequalities
and quadratic convex inequalities. The computational results are performed on different classes of boundary minimization problems.
The proposed technique is compared with the Generalized Differential Evolution method. 相似文献
14.
15.
R. U. Verma 《Applied Mathematics Letters》2000,13(8):1971-62
First, an extension of the projection-contraction (PC) method is introduced, which generalizes a class of the existing PC methods, and then the extended projection-contraction (EPC) method is applied to the solvability of a class of general monotone variational inequalities. 相似文献
16.
H. C. P. Berbee C. G. E. Boender A. H. G. Rinnooy Ran C. L. Scheffer R. L. Smith J. Telgen 《Mathematical Programming》1987,37(2):184-207
Two probabilistic hit-and-run algorithms are presented to detect nonredundant constraints in a full dimensional system of
linear inequalities. The algorithms proceed by generating a random sequence of interior points whose limiting distribution
is uniform, and by searching for a nonredundant constraint in the direction of a random vector from each point in the sequence.
In the hypersphere directions algorithm the direction vector is drawn from a uniform distribution on a hypersphere. In the
computationally superior coordinate directions algorithm a search is carried out along one of the coordinate vectors. The
algorithms are terminated through the use of a Bayesian stopping rule. Computational experience with the algorithms and the
stopping rule will be reported. 相似文献
17.
This paper presents a modified descent method for solving co-coercive variational inequalities. Incorporating with the techniques of identifying descent directions and optimal step sizes along these directions, the new method improves the efficiencies of some existing projection methods. Some numerical results for an economic equilibrium problem are reported. 相似文献
18.
To solve a class of variational inequalities with separable structures, some classical methods such as the augmented Lagrangian
method and the alternating direction methods require solving two subvariational inequalities at each iteration. The most recent
work (B.S. He in Comput. Optim. Appl. 42(2):195–212, 2009) improved these classical methods by allowing the subvariational inequalities arising at each iteration to be solved in parallel,
at the price of executing an additional descent step. This paper aims at developing this strategy further by refining the
descent directions in the descent steps, while preserving the practical characteristics suitable for parallel computing. Convergence
of the new parallel descent-like method is proved under the same mild assumptions on the problem data. 相似文献
19.
Conjugate gradient optimization algorithms depend on the search directions with different choices for the parameter in the search directions. In this note, conditions are given on the parameter in the conjugate gradient directions to ensure the descent property of the search directions. Global convergence of such a class of methods is discussed. It is shown that, using reverse modulus of continuity function and forcing function, the new method for solving unconstrained optimization can work for a continuously differentiable function with a modification of the Curry-Altman‘s step-size rule and a bounded level set. Combining PR method with our new method, PR method is modified to have global convergence property.Numerical experiments show that the new methods are efficient by comparing with FR conjugate gradient method. 相似文献
20.
Randomized search directions in descent methods for minimizing certain quasidifferentiable functions
《Optimization》2012,61(4):475-485
Several descent methods have recently been proposed for minimizing smooth compositions of max-type functions. The methods generate many search directions at each iteration. This paper shows that a random choice of only two search directions at each iteration suffices for retaining convergence to inf-stationary points with probability 1. This technique may decrease significantly the work in quadratic programming and line searches, thus enabling efficient implementations of the methods. 相似文献