排序方式: 共有13条查询结果,搜索用时 55 毫秒
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Explicit expressions for Bayes invariant quadratic estimates, biased and unbiased, are presented and proved to cover the entire class of admissible estimates in the considered classes. An unbalanced genetic model is studied for demonstration. 相似文献
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Stanislaw Heilpern 《Statistical Papers》2002,43(1):53-73
This paper is devoted to application of the Choquet integral with respect to the monotone set functions in economics. We
present the application in decision making, finance, insurance, social welfare and quality of life. The Choquet integral is
used as the numerical representation of preference relation in decision making, as the “expected value” of future price in
financial decision problems, as the insurance premium and as the social evaluation function.
Received: March 2000; revised version: August 2001 相似文献
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The paper deals with experiments laid out in a complete or an incomplete split-plot design in which one control (standard)
treatment occurs in addition to the usual treatments. Usually the control (standard) treatment has been treated as one specific
factor level. In this paper, in contrast to others in this area, the control (standard) may not be strictly connected with
treatment combinations. The new incomplete split-plot designs with control satisfy all generally accepted methodological requirements,
with special reference to the problems of randomisation. Moreover, tools are described which allow checking of the general
balance or efficiency of the design, as well as performance of experiments with inference. 相似文献
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Stanislaw Gnot 《Statistics》2013,47(3):381-386
The problem of identification within two groups is considered, when the space 𝔛 of the possible values of the observed random variable X is finite. Using an essentially complete class of tests hypothesis ξ=0 (ξis real) for the multivariate exponential family, an essentially complete class of sample-based identification rules has been found. Comparison of the rules to those derived from density estimators has shown that the latter constitute a subclass of the former. 相似文献
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Stanislaw Raczynski 《Journal Of Human Behavior In The Social Environment》2018,28(2):204-220
The objective of the model is to simulate the migrations of social groups over certain geographical regions, influenced by the gregarious effect and individual behavior patterns. The people move in search of better work opportunities and welfare. The model components are regions and individuals belonging to certain social groups. A region is characterized by more than 30 parameters, such as geographical data, actual population statistics, education facilities, and work opportunities. For the social groups, the parameters include the demographic and educational statistics. The simulated individuals attempt to optimize their welfare by moving over the model map. Spontaneous migration, without apparent goal, is also considered. The region parameters change owing to the number and the parameters of incoming individuals, which provides a dynamic and nonlinear feedback. The qualitative results reveal that the model never reaches a steady state and that the social groups remain in periodical movement. The simulations are agent-based. No differential equations (like in the System Dynamics approach) or any extant theory or mathematical model is used. 相似文献
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According to a dualistic view, shadow employment may follow from two main labour market failures: (i) official market labour taxation distortions make it ineffective for some agents to engage in registered employment due to a tax wedge; or (ii) for some workers regular employment may be unattainable do to some high access costs or demand constraints, which results in seeking earning opportunities beyond the boundaries of the official labour market. Whereas in the first case revenues from unofficial employment should be higher than the corresponding official ones (tax evasion hypothesis), in the alternative explanation labour market tightness seems to be an underlying reason (market segmentation hypothesis).We use a unique data set from a survey on undeclared employment from Poland. Using propensity score matching and decomposition techniques we demonstrate that workers of shadow economy are characterised by slightly higher endowments, while their revenues are considerably lower than among matched official economy counterparts. Although unobservable heterogeneity is considerable, results are robust. Although this is not direct evidence, we believe these results point to the labour market segmentation hypothesis and endangerment with social exclusion. 相似文献