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1.
本文用数学中的格论的观念来研究易国的数学结构。第一节内涵格今A是一个集会,≤是A上的一个二元关系。如果对于任意的a,b,∈A,都有(1)a≤a;(自返性)(2)若a≤b且b≤a则a=b;(反对称性)(3)若A≤b且b≤c则a≤c;(传递性)则称≤为A上的一个偏序。此时,称有序对(A,≤)为一个偏序结构,也称A为一个偏序集。“a≤b”,可仿照数论中的读法读成、小于等于b”或者“b大于或等于a”,但要注意这只是一种记号和读法上的借用。任一个具有自返性、反对称性和传递性的二元关系就是一个偏序关系。例如,集会之间的被包含关系是一个…  相似文献   

2.
有理论认为,模糊容忍性有助于个体发散性思维的发展,但部分实证研究却呈现出不一致的结论。本文考察了不同认识兴趣在模糊容忍性与发散性思维关系之间的中介和调节作用。结果发现:(1)I型认识兴趣在模糊容忍性和独创性、灵活性、流畅性间起完全中介作用;(2)模糊容忍性与独创性、灵活性的关系受到D型认识兴趣的调节,模糊容忍性与流畅性的关系不受D型认识兴趣的调节。  相似文献   

3.
在含糊性问题研究领域,多值语义解释和超赋值语义解释是两个经典的研究进路。相较多值语义中的经典三值解释和基于概率赋值的模糊逻辑解释,范启德(1975)给出的超赋值语义由于引入了基于可能世界语义的可精确化结构,具有更强的表达力,能够弥补三值和模糊逻辑处理的很多不足。距离超赋值语义发表40余年后,秋叶研(2017)给出了同样满足可精确化结构条件的一个布尔多值解释。由于超赋值语义一直被当作典型的内涵语义处理方式,而在含糊性问题研究领域,布尔多值方法却在大多数时候被认为是模糊逻辑这个基于概率处理的典型的外延语义的复杂版本,内涵语义与外延语义的殊途同归,非常值得仔细思考和探究。本文将结合含糊性问题研究领域的多值语义解释和超赋值语义解释的演进过程,以内涵语义和外延语义的区分为切入点,最终指出,(当下主流定义下的)内涵语义与外延语义的界限是模糊的,而在原有界定基础上,对内涵语义增加“内涵语义要可以表达非线序的偏序结构”这一限制,能够进一步对内涵语义和外延语义进行区分。  相似文献   

4.
信息模糊(obfuscation)是行为经济学研究的重要领域,主要解释了在商品买卖过程中,销售商通过把商品信息复杂化等手段,让人们的消费过程变得更加复杂和困难,从而使消费者在购买商品时面对信息模糊做出种种不明智的选择的现象问题。本文从以往的研究成果出发,就信息模糊、有限理性和销售者的决策行为的关系进行了探讨,以期为信息模糊的跨学科研究提供可借鉴的思路和方法。  相似文献   

5.
矩阵完成问题的项目生成研究   总被引:1,自引:0,他引:1  
依据Embretson提出的认知设计系统方法,设计并编制了矩阵完成问题的项目生成系统,实际生成了矩阵完成问题测验。探讨矩阵测验与瑞文测验的关系,以及认知模型对矩阵问题的难度和区分度的预测能力。结果表明所设计的认知模型对矩阵项目的性能参数有一定的预测能力,生成的矩阵测验与瑞文测验有基本相同的心理测量属性。可以使用该系统生成的矩阵项目来测量被试的抽象推理能力。  相似文献   

6.
本文介绍一种推导有效关系三段论格式的方法,这种方法建基于广义量词理论和命题逻辑的一些基本原理,包括代入法、演绎定理、前提代换、引入存在假设、等价变换等。本文显示利用此方法,不仅可推导包含经典量词的关系三段论,还可推导出包含非经典量词(例如数值量词、比例量词、模糊量词)的关系三段论。除了讨论包含一般二元谓词的关系三段论外,本文也讨论了包含比较形容词的关系三段论,同时也证明了上述方法的有效性,并讨论了进一步研究的方向。  相似文献   

7.
Q矩阵标定是实施认知诊断评估的前提,已有Q矩阵修正方法并不太适合测验中已知属性向量的题目数较少的情形。根据拓展Q矩阵理论中可达阵R列与简化Q阵列存在布尔“或”关系,在一定认知假设下,率先提出可达阵R与简化Q阵的潜在反应列存在布尔“与”关系,并由此提出基于可达阵的Q矩阵标定方法。研究显示:在已知一个可达阵下,当可达阵项目的猜测或失误参数在.20以下且待标定项目的项目参数约在.30以下时,新方法所得Q矩阵元素返真率基本在.90以上,并且真实Q矩阵与估计Q矩阵下被试分类准确率差异很小;对于含5个属性的独立结构,新方法要求的随机样本的样本量较小;实证研究也印证了模拟研究的结论。新方法只需专家标定少量题目的Q矩阵,即已经标定的Q矩阵对应属性层级结构的可达阵。  相似文献   

8.
Q矩阵作为连接认知和测量的桥梁,在认知诊断中起重要作用。本文梳理了应用Q矩阵解决认知诊断相关问题的理论与方法。首先整理Q矩阵的相关概念、算法、性质及其在认知诊断中的作用;并根据Q矩阵可计算理论构念效度、可以构成格等,指出Q矩阵是特殊的关联矩阵;接着介绍Q矩阵理论研究方面的几个近期发展;并对Q矩阵未来的应用研究作出展望。期望本文能为测量工作者更灵活地利用Q矩阵提供参考和帮助。  相似文献   

9.
Q矩阵作为连接认知和测量的桥梁,在认知诊断中起重要作用。本文梳理了应用Q矩阵解决认知诊断相关问题的理论与方法。首先整理Q矩阵的相关概念、算法、性质及其在认知诊断中的作用;并根据Q矩阵可计算理论构念效度、可以构成格等,指出Q矩阵是特殊的关联矩阵;接着介绍Q矩阵理论研究方面的几个近期发展;并对Q矩阵未来的应用研究作出展望。期望本文能为测量工作者更灵活地利用Q矩阵提供参考和帮助。  相似文献   

10.
依恋理论与社会网络理论的进展   总被引:1,自引:0,他引:1       下载免费PDF全文
个体在生命发展过程中,为了其生存、健康和安全,需要与他人进行交往,建立一定的社会关系.本文系统地介绍了目前重要的两大类社会关系理论——依恋理论和社会网络理论的观点、测量方法及其发展过程.其中社会网络理论介绍了三个有代表性的理论:社会网络矩阵观点、护卫模型理论、情感关系模型理论.最后对依恋理论与社会网络理论之间的关系,以及今后的发展方向进行了论述和探讨.  相似文献   

11.
独体汉字的字形相似性研究   总被引:6,自引:2,他引:4  
本文以速示呈现方式获得了一系列独体汉字和字符的混淆矩阵。用Luce(1963)的选择模型特混淆矩阵分解为对称的相似矩阵和反应倾向矢量。基于相似矩阵,以聚类分析和多维量表法探索了汉字和字符的视觉特征及其表征形式,为揭示汉字视觉特征的几何特性和潜在结构,在研究方法上作了有意义的偿试、此外,本研究的结果支持了作者(1995)关于在含“十”或“口”的独体汉字中,“十”与“口”是该类汉字的突出视觉特征的结论。  相似文献   

12.
The matrix product of the initial factor loading matrix times the least- squares orthonormal approximation to the general oblique transformation matrix is suggested to be the most adequate matrix for the evaluation of the contributions of factors to variables. This factor contribution matrix can also re- place the primary factor pattern matrix in evaluating oblique simple structure.  相似文献   

13.
The Procrustes method of deriving a reference vector structure from a principal-axes factor matrix is shown to be a class of solutions all of which obtain a transformation matrix which “rotates” the principal-axes matrix as close as possible to some desired matrix H. Various factor transformation methods, such as Promax, eigenvector rotation, as well as the classical Procrustes, differ chiefly in their rationale and method of generating H.  相似文献   

14.
This is the first of three reports of a taxonomic investigation of person- ality based on a matrix of 600 personality questionnaire items represented equally by marker items derived from the personality trait systems developed by J. P. Guilford and R. B. Cattell. This report outlines the entire prsject (Sells, Demaree, and Will, 1968) and focuses on the factor structure of the total matrix with particular concern for the relative contributions and relations of the two sources. The second report will analyze in detail the separate factor structures found in the Guilford and Cattell trait markers, while the third will summarize the final factor identification, based on analyses of the total matrix and matrices representing the Guilford and Cattell systems.  相似文献   

15.
16.
If the varimax criterion values. for rotations of successively greater numbers of principal axes of the image covariance matrix G are listed, they may be examined for two features: the unimodality of the distribution reflects the clarity of latent structure; and the peak value indicates the number of common factors present. The procedure is applied to nine published example problems and compared to other rules of thumb for determining the rank of a factor matrix.  相似文献   

17.
A variety of recent articles in the personnel selection literature have used analyses of meta-analytically derived matrices to draw general conclusions for the field. The purpose of this article is to construct a matrix that incorporates as complete information as possible on the relationships among cognitive ability measures, three sets of alternative predictors, and job performance, We build upon a starting matrix used by Schmitt, Rodgers, Chan, Sheppard, and Jennings (1997). Mean differences, by race, for each of the measures and the potential for adverse impact of predictor composites are also considered. We demonstrate that the use of alternative predictors alone to predict job performance (in the absence of cognitive ability) lowers the potential for adverse impact. However, in contrast to recent claims, adverse impact continues to occur at many commonly used selection ratios. Future researchers are encouraged to use our matrix and to expand upon it as new primary research becomes available. We also report and reaffirm many methodological lessons along the way, including the many judgment calls that appear in an effort of this magnitude and a reminder that the field could benefit from even greater conceptual care regarding what is labeled an "alternative predictor." Directions for future meta-analyses and for future primary research activities are also derived.  相似文献   

18.
MATRIX OF TENSIONS   总被引:1,自引:0,他引:1  
Questions about how women integrate maternity into their sense of self have generated a quest for an heuristic model. We suggest that mothers struggle to balance themselves amid a set of polarities/tensions and that mothering can be situated within a phenomenological matrix of such tensions. We propose a model that includes the following developmental issues: loss of self/expansion of self; omnipotence/liability; life-destroying/life-promoting behavior; maternal isolation/maternal community; cognitive strategies/intuitive responses; maternal desexualization/maternal sexualization. Investigation and understanding of how mothers cope with these tensions could yield insights into both universal and particular aspects of mothering.  相似文献   

19.
Reaching beyond the Oedipus prototype to address the unrepresentable vulnerability founded on the boy's infantile helplessness in contact with the mother's body, the author aims to identify the inherent tensions and enigmas of being male. He proposes that both the repudiation of femininity and the overvaluation of phallicity are unconsciously constructed to withstand the fundamental deficiency grounded in the asymmetry of the boy's prephallic relation with his primary object. This bodily based primordial vulnerability, marked by absence and lack, remains elusive—an unsymbolizable experience that provides the archaic matrix for adaptive and defensive phallicism, the oedipal complex, and genital progression. A clinical vignette is presented to illustrate these concepts.  相似文献   

20.
An experiment in which the subjects estimated (a) the ratio and (b) the similarity of pairs of stimuli, consisting of weights, is reported. The report reveals that the relation obtained in earlier investigations between estimated similarity and the two subjective magnitudes of the pair, holds good for the continuum of heaviness too. In connection with this the intraindividual standard deviation of ratio estimates and the problem of internal consistency of a ratio matrix are treated. In a speculative discussion the concept of similarity is scrutinized, the similarity function is tentatively extended to multi-dimensional cases and an attempt is made to connect similarity and discrimination learning.  相似文献   

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