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生存分析：实用方法AI 解读

Preface to the First Edition. Preface to the Second Edition. Chapter 1: Introduction and Review of Statistical Concepts. Chapter 2: Survival Curves. Chapter 3: Comparison of Survival Curves. Chapter 4: Parametric Modelling. Chapter 5: Cox's Proportional Hazards Model. Chapter 6: Selecting Variables within a Cox Model. Chapter 7: Extensions of the Cox Model. Chapter 8: Prognostic Indices. Chapter 9: Sample Sizes. Chapter 10: Further Topics. References. Statistical Tables.…

多次捕获—再捕获模型的贝叶斯分析AI 解读

In multiple capture-recapture surveys, the probability of capture can vary between sampling occasions. The model accounting for this variation is known as Mt. Bayes, empirical Bayes, and Bayes empirical Bayes solutions are given to the problems of interval estimation, decision making, and point estimation of the population size N. When the number of sampling occasions is small to moderate and the number of recaptured units observed on each sampling occasion is moderate,…

估计年龄构成时，两阶段抽样真的更好吗？AI 解读

The two-phase sampling design has been traditionally used in ecology applications to estimate age composition. With regard to both economic and statistical considerations, however, the two-phase design may yield estimates of the age composition that are no better than can be obtained using simple random sampling. This article shows that the optimality of the two-phase sampling design depends upon (a) survey objectives, (b) per-unit sampling costs, and (c) the predictive…

两阶段抽样真的更适合估计年龄构成吗？AI 解读

The two-phase sampling design has been traditionally used in ecology applications to estimate age composition. With regard to both economic and statistical considerations, however, the two-phase design may yield estimates of the age composition that are no better than can be obtained using simple random sampling. This article shows that the optimality of the two-phase sampling design depends upon (a) survey objectives, (b) per-unit sampling costs, and (c) the predictive…

鱼类种群年龄构成估计的贝叶斯优化AI 解读

To estimate the age distribution of a fish population, a two-phase stratified sample design is proposed. Bayesian methods are employed to determine (a) optimal estimators of the desired population proportions; and (b) the optimal choice of second-phase sample sizes subject to a fixed budget. A summary of the results of some numerical examples is presented. These examples demonstrate typical expected gains obtained by using the Bayesian optima as compared to alternative…

鱼类种群年龄构成估计的贝叶斯优化AI 解读

To estimate the age distribution of a fish population, a two-phase stratified sample design is proposed. Bayesian methods are employed to determine (a) optimal estimators of the desired population proportions; and (b) the optimal choice of second-phase sample sizes subject to a fixed budget. A summary of the results of some numerical examples is presented. These examples demonstrate typical expected gains obtained by using the Bayesian optima as compared to alternative…