频繁模式挖掘是数据挖掘领域中很重要的一部分.目前,出现了许多基于约束的频繁模式挖掘算法和交互式算法,但把两者结合起来的算法却很少.提出了一种基于约束的交互式频繁模式挖掘算法IMCFP(interactive mining of constraint-based freq...频繁模式挖掘是数据挖掘领域中很重要的一部分.目前,出现了许多基于约束的频繁模式挖掘算法和交互式算法,但把两者结合起来的算法却很少.提出了一种基于约束的交互式频繁模式挖掘算法IMCFP(interactive mining of constraint-based frequent patterns).首先该算法按照约束的性质来建立频繁模式树,并且只需扫描一遍数据库;然后建立每个项的条件树,挖掘以该项为前缀的最大频繁模式,并用最大频繁模式树来存储;最后根据最大模式来找出所有的支持度明确的频繁模式.另外,该算法允许用户在挖掘过程中动态地改变约束.实验表明,该算法与iCFP算法相比是很有效的.展开更多
In this paper, we study the optimal control problem of nonlinear differentialinclusions with principle operator being pseudomonotone. First, we give some propertiesof solutions of certain evolution equations. Further,...In this paper, we study the optimal control problem of nonlinear differentialinclusions with principle operator being pseudomonotone. First, we give some propertiesof solutions of certain evolution equations. Further, we prove the existence of admissibletrajectories for evolution inclusions. Then, we extend the Fillipov's selection theoremand discuss a general Lagrange type optimal control problem. Finally, we present anexample that demonstrates the appplicability of our results.展开更多
This paper presents a new nonmonotone filter line search technique in association with the MBFGS method for solving unconstrained minimization.The filter method,which is traditionally used for constrained nonlinear pr...This paper presents a new nonmonotone filter line search technique in association with the MBFGS method for solving unconstrained minimization.The filter method,which is traditionally used for constrained nonlinear programming(NLP),is extended to solve unconstrained NLP by converting the latter to an equality constrained minimization.The nonmonotone idea is employed to the filter method so that the restoration phrase,a common feature of most filter methods,is not needed.The global convergence and fast local convergence rate of the proposed algorithm are established under some reasonable conditions.The results of numerical experiments indicate that the proposed method is efficient.展开更多
基金Supported by the Natural Science Foundation of Guizhou university(200101007)
文摘In this paper, we study the optimal control problem of nonlinear differentialinclusions with principle operator being pseudomonotone. First, we give some propertiesof solutions of certain evolution equations. Further, we prove the existence of admissibletrajectories for evolution inclusions. Then, we extend the Fillipov's selection theoremand discuss a general Lagrange type optimal control problem. Finally, we present anexample that demonstrates the appplicability of our results.
基金supported by the National Science Foundation under Grant No.11371253the Science Foundation under Grant No.11C0336 of Provincial Education Department of Hunan
文摘This paper presents a new nonmonotone filter line search technique in association with the MBFGS method for solving unconstrained minimization.The filter method,which is traditionally used for constrained nonlinear programming(NLP),is extended to solve unconstrained NLP by converting the latter to an equality constrained minimization.The nonmonotone idea is employed to the filter method so that the restoration phrase,a common feature of most filter methods,is not needed.The global convergence and fast local convergence rate of the proposed algorithm are established under some reasonable conditions.The results of numerical experiments indicate that the proposed method is efficient.
