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101.
本文将数据挖掘(高斯过程回归建模)和智能进化算法(GA,NSGA-Ⅱ)进行结合,用于解决优化函数未知的昂贵区间多目标优化问题.首先利用高斯过程对采用中点和不确定度表示的未知目标函数和约束函数进行建模,由于相关性和准确性是区间函数模型的两个必备条件,故提出一种融合多属性决策的双层种群筛选策略,并将其嵌入到遗传算法求解高斯模型参数的过程中,第1层根据相关性属性排除候选解集中部分劣解,第2层根据准确性属性排除候选解集中其余超出种群规模的劣解,两属性的权重系数决定两层排除劣解的比例.然后将所建模型作为优化对象的代理模型引导区间NSGA-II算法优化求解,从而获得所需的Pareto前沿. 相似文献
102.
103.
This paper proposes a method for solving the stochastic multiple criteria decision making (SMCDM) problem, where consequences of alternatives with respect to criteria are represented by random variables with probability distributions. Firstly, definitions and related analysis of dominance degree of one probability distribution over another are given. Then, by calculating the dominance degrees, the dominance degree matrix of alternative pairwise comparisons with respect to each criterion is built. Further, using PROMETHEE II method, an overall dominance degree matrix of alternative pairwise comparisons is constructed, and a net flow of each alternative is calculated. Based on the obtained net flows, a ranking of alternatives is determined. Finally, numerical examples for the three cases are given to illustrate the use of the proposed method. 相似文献
104.
Bih-Sheue Shieh 《Information Sciences》2011,181(4):832-841
The work examines the feasibility of minimizing a linear objective function subject to a max-t fuzzy relation equation constraint, where t is a continuous/Archimedean t-norm. Conventional methods for solving this problem are significantly improved by, first separating the problem into two sub-problems according to the availability of positive coefficients. This decomposition is thus more easily handled than in previous literature. Next, based on use of the maximum solution of the constraint equation, the sub-problem with non-positive coefficients is solved and the size of the sub-problem with positive coefficients reduced as well. This step is unique among conventional methods, owing to its ability to determine as many optimal variables as possible. Additionally, several rules are developed for simplifying the remaining problem. Finally, those undecided optimal variables are obtained using the covering problem rather than the branch-and-bound methods. Three illustrative examples demonstrate that the proposed approach outperforms conventional schemes. Its potential applications are discussed as well. 相似文献
105.
Rita A. RibeiroAuthor Vitae Ana M. MoreiraAuthor VitaePim van den BroekAuthor Vitae Afonso PimentelAuthor Vitae 《Decision Support Systems》2011,51(1):208-219
During software development, many decisions need to be made to guarantee the satisfaction of the stakeholders' requirements and goals. The full satisfaction of all of these requirements and goals may not be possible, requiring decisions over conflicting human interests as well as technological alternatives, with an impact on the quality and cost of the final solution. This work aims at assessing the suitability of multi-criteria decision making (MCDM) methods to support software engineers' decisions. To fulfil this aim, a HAM (Hybrid Assessment Method) is proposed, which gives its user the ability to perceive the influence different decisions may have on the final result. HAM is a simple and efficient method that combines one single pairwise comparison decision matrix (to determine the weights of criteria) with one classical weighted decision matrix (to prioritize the alternatives). To avoid consistency problems regarding the scale and the prioritization method, HAM uses a geometric scale for assessing the criteria and the geometric mean for determining the alternative ratings. 相似文献
106.
A framework for dynamic multiple-criteria decision making 总被引:1,自引:0,他引:1
Gianluca CampanellaAuthor Vitae Rita A. RibeiroAuthor Vitae 《Decision Support Systems》2011,52(1):52-60
The classic multiple-criteria decision making (MCDM) model assumes that, when taking a decision, the decision maker has defined a fixed set of criteria and is presented with a clear picture of all available alternatives. The task then reduces to computing the score of each alternative, thus producing a ranking, and choosing the one that maximizes this value.However, most real-world decisions take place in a dynamic environment, where the final decision is only taken at the end of some exploratory process. Exploration of the problem is often beneficial, in that it may unveil previously unconsidered alternatives or criteria, as well as render some of them unnecessary.In this paper we introduce a flexible framework for dynamic MCDM, based on the classic model, that can be applied to any dynamic decision process and which is illustrated by means of a small helicopter landing example. In addition, we outline a number of possible applications in very diverse fields, to highlight its versatility. 相似文献
107.
一种动态多目标决策模型及其应用 总被引:18,自引:3,他引:15
针对一类动态多指标决策问题。提出一种多目标多阶段动态决策模型。根据所提出的效用函数,将决策矩阵归一化到相应的效用矩阵。该效用函数以指标的平均值为参数考点,突出了“奖优罚劣”原则,提高了分辨精度。最后提出一种动态决策目标函数,并通过对5城市3年综合经济效益的评估实例,表明此方法是合理可行的。 相似文献
108.
XIE Yong 《数字社区&智能家居》2008,(34)
在建筑行业的投标报价过程中,如何确定对最终投标报价决策影响较大的几项因素以及如何确定这些因素与最终投标报价决策之间的关系是一个棘手的问题。为此提出了基于案例推理的报价决策模型,并研究了该模型的可行性,使报价过程规则的自动提取成为可能。 相似文献
109.
A confidence-based framework for business to consumer (B2C) mobile commerce adoption 总被引:1,自引:0,他引:1
The Technology Acceptance Model (TAM) has been considered to be fundamental in determining the acceptance of new technology
in the past decades. The two beliefs, ease of use and usefulness, in the model may not, however, fully explain the consumers’
behavior in an emerging environment, such as mobile commerce (m-commerce). This paper aims to develop a framework for m-commerce
adoption in consumer decision-making processes. In this paper TAM has been adopted and extended to analyze successful m-commerce
adoption. The key elements of the proposed confidence-based framework for B2C m-commerce adoption include psychological and
behavioral factors. Psychological factors include history-based confidence, institution-based confidence and personality-based
confidence. Behavioral factors include perceived ease of use and perceived usefulness of the mobile application and technology. 相似文献
110.
广西钦州坭兴陶是中国"四大名陶"之一,其制陶工艺历史悠久,坭兴陶的土质洁净细腻、制作工艺精湛,在烧制过程中还可以产生丰富的色彩变化,形成稀有独特的"窑变"效果,这种效果的陶制品非常珍贵,被称作"窑宝"。广西钦州坭兴陶独特的民族文化装饰图案赋予了它独特的地域特征,凝聚了钦州陶艺师们智慧结晶和艺术表现力,为钦州的文化产业做出突出的贡献。 相似文献