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71.
通过对国内外顾客满意度指数模型的对比及对我国的现状分析,提出顾客满意度测评的常规模型。在此基础上对常规模型的模型设定、模型估计和模型评价进行研究;利用PLS算法估计模型中的各个参数,将外部估计分为无缺失值和有缺失值两种情况,针对后者提出局部权重新定的缺失值处理方法;以某食品公司为研究对象,对构建的顾客满意度测评常规模型进行实证分析和评价。结果表明:常规模型的显变量符合单一纬度条件、具有一定的解释能力和良好的内敛效度,拟合效果可以接受,测评结果是满意和有效的,为PLS路径模型研究及缺失值处理提供了实用方法。 相似文献
72.
顾鸣镝 《西南交通大学学报(社会科学版)》2012,(2):65-70
汉语中"很+NP"结构是一个典型的高程度性状义构式。构式的部分能产性基于范畴属性的归纳,其认知机制是非范畴化的。某个具体名词一旦进入"很+NP"构式,这个名词的意义就会遵循它所嵌入的构式的意义,条件是该名词具有可被激活的表示程度性状义的语义因子。构式指示语义类型、构式强制提供了词汇项产生语义类型转变的条件,以保证相应的语义因子获得合适的论元。进入"很+NP"构式的名词都含有该构式所在的具体语境的语义因子,整个过程是以认知语言学的凸显原则为基础的。 相似文献
73.
基于PLS路径模型的顾客满意度测评研究 总被引:3,自引:0,他引:3
根据美国顾客满意度指数模型,提出了一种基于PLS路径模型的顾客满意度测评模型;详细阐述了模型设定、模型估计和模型评价。实例证明该顾客满意度测评模型显变量符合单一纬度条件、具有良好的内敛效度、具有一定的解释能力,拟合效果可以接受,为国内顾客满意度测评研究提供了实用方法。 相似文献
74.
Abstract. We consider a bidimensional Ornstein–Uhlenbeck process to describe the tissue microvascularization in anti‐cancer therapy. Data are discrete, partial and noisy observations of this stochastic differential equation (SDE). Our aim is to estimate the SDE parameters. We use the main advantage of a one‐dimensional observation to obtain an easy way to compute the exact likelihood using the Kalman filter recursion, which allows to implement an easy numerical maximization of the likelihood. Furthermore, we establish the link between the observations and an ARMA process and we deduce the asymptotic properties of the maximum likelihood estimator. We show that this ARMA property can be generalized to a higher dimensional underlying Ornstein–Uhlenbeck diffusion. We compare this estimator with the one obtained by the well‐known expectation maximization algorithm on simulated data. Our estimation methods can be directly applied to other biological contexts such as drug pharmacokinetics or hormone secretions. 相似文献
75.
王瑞成 《宁波大学学报(人文科学版)》2013,(5):82-88
鸦片战争结束后,清王朝并无我们期待的深刻反思。他们所进行的善后工作中一项重要的内容是战败责任追究,这包括道德拷问和法律责任追究两方面,这两者是王朝要坚守的根本。但承担责任的地方官员,对一场力量悬殊的中外战争中职守责任的理解与朝廷存在差异,同时他们更关注如何应对战后外部的压力和复杂的局面,要求朝廷能做一些变通。根本之守与应时之变的分歧构成战后政治变动的内在张力,并预示着整个晚清政局的走向。 相似文献
76.
中国法语境下的并存债务承担制度 总被引:1,自引:0,他引:1
岳业鹏 《北京科技大学学报(社会科学版)》2011,27(1):61-68
鉴于并存债务承担制度在立法及理论研究上的缺憾,文章对该制度进行系统研究。正确理解并存债务承担制度,必须考虑到我国特定的学术与立法背景。文章分析了并存债务承担制度的内涵与外延,并通过对《合同法》第84条的解释论分析,认为并存债务承担并不包含在“部分移转”之中,我国立法并未承认并存债务承担制度,存在立法漏洞。文章突出债务承担合同的中心地位,并以此为基础讨论并存债务承担中履行障碍的解决机制。 相似文献
77.
Richard Blundell Martin Browning Ian Crawford 《Econometrica : journal of the Econometric Society》2008,76(6):1227-1262
This paper uses revealed preference inequalities to provide the tightest possible (best) nonparametric bounds on predicted consumer responses to price changes using consumer‐level data over a finite set of relative price changes. These responses are allowed to vary nonparametrically across the income distribution. This is achieved by combining the theory of revealed preference with the semiparametric estimation of consumer expansion paths (Engel curves). We label these expansion path based bounds on demand responses as E‐bounds. Deviations from revealed preference restrictions are measured by preference perturbations which are shown to usefully characterize taste change and to provide a stochastic environment within which violations of revealed preference inequalities can be assessed. 相似文献
78.
How long is the queuing for public childcare facilities in Korea? An empirical analysis of Korean households' childcare mode choice with the limited availability of public childcare facilities 下载免费PDF全文
This paper empirically investigates Korean households' choice of childcare mode using the Korean Childcare Users Survey (2012). A multivariate logit model with partial observability (hereafter, PO‐logit model) is employed to address the issue of Korean households' demand for public childcare facilities exceeding capacity limits. Our estimation result rejects the hypothesis of no queueing at conventional significance levels to advocate use of the PO‐logit model in explaining Korean households' childcare choices. We decompose choice probabilities of public childcare facilities to estimate the size of queuing. Our results imply that 31.8% of parents preferring public childcare facility are forced to choose other childcare modes due to capacity limit. 相似文献
79.
《Scandinavian Journal of Statistics》2018,45(1):194-216
We consider fast lattice approximation methods for a solution of a certain stochastic non‐local pseudodifferential operator equation. This equation defines a Matérn class random field. We approximate the pseudodifferential operator with truncated Taylor expansion, spectral domain error functional minimization and rounding approximations. This allows us to construct Gaussian Markov random field approximations. We construct lattice approximations with finite‐difference methods. We show that the solutions can be constructed with overdetermined systems of stochastic matrix equations with sparse matrices, and we solve the system of equations with a sparse Cholesky decomposition. We consider convergence of the truncated Taylor approximation by studying band‐limited Matérn fields. We consider the convergence of the discrete approximations to the continuous limits. Finally, we study numerically the accuracy of different approximation methods with an interpolation problem. 相似文献
80.
Graphical models capture the conditional independence structure among random variables via existence of edges among vertices. One way of inferring a graph is to identify zero partial correlation coefficients, which is an effective way of finding conditional independence under a multivariate Gaussian setting. For more general settings, we propose kernel partial correlation which extends partial correlation with a combination of two kernel methods. First, a nonparametric function estimation is employed to remove effects from other variables, and then the dependence between remaining random components is assessed through a nonparametric association measure. The proposed approach is not only flexible but also robust under high levels of noise owing to the robustness of the nonparametric approaches. 相似文献