基于CBR的化妆品销售组合预测模型

预测是销售企业面临的至关重要的问题,预测精度会直接影响到企业的利润及长远发展。考虑到化妆品销售独特的生命周期特点,提出基于案例推理技术的化妆品销售组合预测模型。基于案例推理技术能够弥补短生命周期产品数据不足的问题,根据"最相似"产品的数据对目标产品属性进行推理计算,既提高了预测精度,又便于实际操作。在此基础上,提出了改进的BASS模型及季节性趋势增长模型,充分考虑数据序列波动的季节性、趋势性及其完整的生命周期特征。为了进一步提高预测精度,提出AFTER-GA组合预测算法,并添加PSOWv-SVM模型作为组合预测的模型之一,利用模型处理外界影响因素的能力,使得各模型取长补短,更有效地突出各模型的优势,从而取得更精确的预测结果。实例分析表明,AFTER-GA组合预测算法在精度上要明显优于其他方法;基于CBR的组合预测模型在化妆品销售预测方面,能够达到令人满意的精度要求,具有实际应用价值。     

Differentiating Contemporary Racial Prejudice from Old-Fashioned Racial Prejudice

The present study addresses the distinction between contemporary and old-fashioned prejudice using survey data from a national sample (n = 600) of self-identified whites living in the United States and interviewed by telephone in 2001. First, we examine associations among indicators of contemporary and old-fashioned prejudice. Consistent with the literature, contemporary and old-fashioned prejudice indicators represent two distinct but correlated common factors. Second, we examine whether belief in genetic race differences uniformly predicts both types of prejudice. As might be expected, belief in genetic race differences predicts old-fashioned prejudice but contrary to recent theorizing, it also predicts contemporary prejudice.     

转基因作物基因资源的知识产权保护进路研究

知识产权是知识财产私有的权利形式,是一种基于个体的权利生成,面对权利客体的多样性创新,特别是转基因作物基因资源集合了自然公共属性和个体价值属性,对知识产权保护进路形成突破。以农民权为基础和框架构建的基因资源权应注入社区发展权的公共性理念,通过社区共享性制度系统促进转基因作物基因资源与知识产权保护的双向度互动式发展进路。     

基于GA与模糊综合评价法的物流企业绩效评价研究

物流企业绩效评价是实行有效的绩效管理,提高企业科学管理水平的重要前提,但因为涉及众多因素,评价较为复杂。本文采用遗传算法和模糊综合评价法相结合,对其进行评价,最后采用本文提出的方法进行了实证研究。     

模因论视域下的电影字幕英汉翻译

从基因型模因的角度入手,分析字幕片中的英汉字幕翻译所体现的文化模因,强调基因型模因在电影字幕翻译中的重要地位。     

结构主义、自然科学与经济学的变革

经济学与自然科学的元素结构具有惊人的相似性。运用结构主义方法,可以改进经济学的基因结构。与生物DNA的基本片段相比较,《资本论》的基因片段尚未健全。由于历史限制,马克思尚未建立起多维对称的基因结构。但《资本论》的基因片段可以自我复制、自我完善。《资本论》基因片段的自我完善,对于建立经济学元素周期率和经济学DNA结构,对于21世纪经济学的变革意义重大。     

面向Agent马尔科夫多议题自动谈判模型研究

为增强自动谈判模型中各谈判Agent在报价与反报价过程中的科学性和合理性,提高谈判的效率和成功的概率,将马尔科夫链方法应用于对谈判对方各轮报价的预测当中,以增强模型对谈判过程的逻辑推理能力,通过与改进后的遗传算法相结合,构建了面向Agent的马尔科夫多议题自动谈判模型,期望为谈判各方在谈判过程中的报价提供有力支持。通过仿真计算可以看出,所提模型很好地对谈判过程进行了仿真和推理,多种方法的有效结合,能够客观地为谈判各方Agent提供合理决策的有效依据。     

中国特有普通小麦种质资源的研究与应用

系统地论述了新疆稻麦、云南铁壳麦、西藏半野生小麦和四川白麦子类型等中国特有小麦种质资源的种类、地理分布,及其起源与演化系统。并对中国特有小麦种质资源的深入研究及特殊优良基因的发掘与利用问题进行了讨论。     

A Novel Powerful Joint Analysis with Data Fusion in Two-stage Case–Control Genome-wide Association Studies

In genome-wide association studies (GWASs) to detect the disease-associated genetic variants, two-stage design has received much attention because of its cost effectiveness and high efficiency. Under the framework of a two-stage design, it has been shown that joint analysis is more powerful than replication-based analysis. Several robust tests have been proposed for joint analysis to handle the problem of unknown genetic mode of inheritance. However, existing joint analysis of combining test statistics from both stages might suffer from a loss of efficiency if the combined test statistics are not sufficient or the weight of the statistic for each stage is not appropriate. In this article, we propose a new strategy for joint analysis by combining the raw data rather than the test statistics across stages and construct a robust MAX3-based test for two-staged GWASs, which can make full use of the information of the data from both stages. Our numerical results show that the proposed procedure is more powerful and computationally much faster than the existing joint analysis procedures. An application to a type 2 diabetes dataset is used to illustrate the proposed approach.     

The Ecology of Cooperation

In the evolutionary approach to the repeated prisoner's dilemma, strategies spread in populations of emulating and experimenting agents through the principle of survival of the fittest. Although no pure strategy is evolutionarily stable in such populations, the processes of differential strategy propagation provide a promising area of study. This paper employs computer simulations to uncover how these processes govern the oscillating and open-ended evolution of alternative forms of behaviour. Certain `ecological' relationships between important strategy types which are found to be responsible for these behavioural shifts are explored.