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Conan Mukherjee 《Social Choice and Welfare》2014,42(2):289-311
We completely characterize the class of fair and group strategy-proof mechanisms. We consider two notions of fairness, anonymity in welfare and no-envy. Both fairness axioms, when applied with strategy-proofness, imply decision efficiency, and lead to the same class of group strategy-proof mechanisms (where the group size is restricted to two). We find that the only feasible mechanism satisfying a mild zero transfer axiom, in this class, is the Pivotal mechanism. 相似文献
63.
Interval-censored data are very common in the reliability and lifetime data analysis. This paper investigates the performance of different estimation procedures for a special type of interval-censored data, i.e. grouped data, from three widely used lifetime distributions. The approaches considered here include the maximum likelihood estimation, the minimum distance estimation based on chi-square criterion, the moment estimation based on imputation (IM) method and an ad hoc estimation procedure. Although IM-based techniques are extensively used recently, we show that this method is not always effective. It is found that the ad hoc estimation procedure is equivalent to the minimum distance estimation with another distance metric and more effective in the simulation. The procedures of different approaches are presented and their performances are investigated by Monte Carlo simulation for various combinations of sample sizes and parameter settings. The numerical results provide guidelines to analyse grouped data for practitioners when they need to choose a good estimation approach. 相似文献
64.
On the structure of simple preference-based choice functions 总被引:3,自引:0,他引:3
Consider an agent with fuzzy preferences, who has to make exact choices when faced with different feasible sets of alternatives.
Confining our analysis to the case of feasible sets with not more than two alternatives, we axiomatically characterize two
broad classes of decision rules (`ratio rules' and `difference rules') for determining exact choices from these two-element
feasible sets on the basis of fuzzy preferences.
Received: 22 January 1997/Accepted: 2 October 1998 相似文献
65.
In cross-over experiments, where different treatments are applied successively to the same experimental unit over a number of time periods, it is often expected that a treatment has a carry-over effect in one or more periods following its period of application. The effect of interaction between the treatments in the successive periods may also affect the response. However, it seems that all systematic studies of the optimality properties of cross-over designs have been done under models where carry-over effects are assumed to persist for only one subsequent period. This paper proposes a model which allows for the possible presence of carry-over effects up to k subsequent periods, together with all the interactions between treatments applied at k + 1 successive periods. This model allows the practitioner to choose k for any experiment according to the requirements of that particular experiment. Under this model, the cross-over designs are studied and the class of optimal designs is obtained. A method of constructing these optimal designs is also given. 相似文献
66.
A general successive substitutions' scheme is developed to estimate parameters in a finite mixture of distributions from the exponential family, based on censored data. It is assumed that the data can be grouped in the first class and the number of observations in each of the remaining classes are known Examples from Poisson Exponential and Normal distributions are given A small simulation exercise has also been carried out for the mixture of two one parameter exponential population. 相似文献
67.
In this article, maximum likelihood estimator (MLE) as well as Bayes estimator of traffic intensity (ρ) in an M/M/1/∞ queueing model in equilibrium based on number of customers present in the queue at successive departure epochs have been worked out. Estimates of some functions of ρ which provide measures of effectiveness of the queue have also been derived. A comprehensive simulation study starting with the transition probability matrix has been carried out in the last section. 相似文献
68.
As proposed by Bartholomew (1967), occupational mobility should better be represented by semi-Markov processes. In the present paper attempts have been made to develop some new measures of occupational mobility in terms of serai-Markov processes and their values have been studied in the three extreme situations of interest. 相似文献
69.
Kanchan Mukherjee 《Revue canadienne de statistique》2006,34(2):341-356
The author presents asymptotic results for the class of pseudo‐likelihood estimators in the autoregressive conditional heteroscedastic models introduced by Engle (1982). Unlike what is required for the quasi‐likelihood estimator, some estimators in the class he considers do not require the finiteness of the fourth moment of the error density. Thus his method is applicable to heavy‐tailed error distributions for which moments higher than two may not exist. 相似文献
70.
Mukherjee BN 《Population studies》1975,29(1):127-142
Summary A follow-up study employing the panel design which aimed to evaluate the temporal stability of rural respondents' answers to KAP and fertility-related questions after a lapse of nearly five months revealed that reports by females on factual data dealing with socio-economic and demographic topics are as highly reliable as are those of males. The study based on 79 males and 81 females in Haryana further supports the hypothesis that re-test reliabilities of factual data such as respondent's age, religion, occupation, etc. are substantially higher than those of knowledge about contraceptives. Attitude items showed very low re-test reliabilities although the internal consistency reliabilities of the two attitude scales were found to vary within the range of 0.72 to 0.88. Both attitude scales were found to have a very high reproducibility coefficient, all higher than 0.95, for both the interview sessions. Re-test reliabilities of data on contraceptive use were also found to be moderately high. However, the rates of loop insertion and condom use as reported by female respondents are likely to show a substantial amount of gross error as is evident from their low re-test reliabilities. The findings of the present study cast serious doubt on the assumption that married males are not capable of accurately reporting the pregnancy histories of their wives. Several implications of the findings are discussed. From the methodological point of view they suggest a need to develop improved techniques for assessing attitudes toward family planning programmes and abortion as well as to knowledge of contraceptive methods and desired family size. The findings also justify the inclusion of eligible male respondents in KAP and fertility surveys. 相似文献