搜索结果: 151-165 共查到“环境与生态统计学”相关记录269条 . 查询时间(0.347 秒)
Statistical methods of SNP data analysis with applications
Genetic data statistical analysis multifactor dimensiona-lity reduction
2011/7/7
Various statistical methods important for genetic analysis are considered and developed. Namely, we concentrate on the multifactor dimensionality reduction, logic regression, random forests and stocha...
Optimal Rate Scheduling via Utility-Maximization for J-User MIMO Markov Fading Wireless Channels with Cooperation
Processor-SharingQueues Random Environment Multi-Input Multi-Output
2011/7/7
We design a dynamic rate scheduling policy of Markov type via the solution (a social optimal Nash equilibrium point) to a utility-maximization problem over a randomly evolving capacity set for a class...
Markov Chain Monte Carlo Based on Deterministic Transformations
Geostatistics High dimension Inverse transfromation Jacobian
2011/7/6
In this article we propose a novel MCMC method based on deterministic transformations T : X x D --> X where X is the state-space and D is some set which may or may not be a subset of X. We refer to ou...
A method for generating realistic correlation matrices
method generating realistic correlation matrices
2011/7/6
Simulating sample correlation matrices is important in many areas of statistics. Approaches such as generating normal data and finding their sample correlation matrix or generating random uniform $[-1...
Nonasymptotic bounds on the estimation error of MCMC algorithms
Mean square error Computable bounds
2011/7/6
We address the problem of upper bounding the mean square error of MCMC estimators. Our analysis is non-asymptotic.
A Markov Chain approach to determine the optimal performance period and bad definition for credit scorecard
Markov Chain approach optimal performance period bad definition credit scorecard
2011/7/6
Performance period determination and bad definition for credit scorecard has been a mix of fortune for the typical data modeler.
On tail trend detection: modeling relative risk
extreme value distribution regular variation extreme rainfall
2011/7/6
A simple and natural model is introduced for studying a trend in the tail of a probability distribution over time (or over space).
Distortion risk measures for sums of dependent losses
Coherence Dependence structure Distortion function Risk measure Risk theory
2011/7/5
We discuss two distinct approaches, for distorting risk measures of sums of dependent random variables, which preserve the property of coherence. The first, based on distorted expectations, operates o...
Lipschitz Bandits without the Lipschitz Constant
Lipschitz Bandits Constant strategy environments
2011/6/20
We consider the setting of stochastic bandit problems with
a continuum of arms. We first point out that the strategies considered so
far in the literature only provided theoretical guarantees of the...
Uniform bias study and Bahadur representation for local polynomial estimators of the conditional quantile function
Bahadur representation Conditional quantile function Local polynomial estimation Econometrics of Auctions
2011/6/20
This paper investigates the bias and the weak Bahadur representation of a local
polynomial estimator of the conditional quantile function and its derivatives.
The bias and Bahadur remainder term are...
5月17日下午，中国科协在京举行了2011年中国科协优秀调研报告评选颁奖大会。中国自然资源学会秘书长沈镭研究员课题组提交的“关于加快和促进中国对非洲资源与环境科技合作的建议”，荣获2011年度中国科协优秀调研报告特等奖。该咨询建议报告是在中国科学院国际合作局对外重点咨询项目资助下完成的部分成果，2010年3月被中科院办公厅刊物《中国科学院专报信息》第48期采用，并上报中办和国办，被中办刊物《专报》...
Discussion of: A statistical analysis of multiple temperature proxies: Are reconstructions of surface temperatures over the last 1000 years reliable?
reconstructions of surface temperatures statistical analysis
2011/6/17
McShane andWyner (2011) (henceforthMW) analyze a dataset of “proxy”
climate records previously used by Mann et al. (2008) (henceforth M08) to
attempt to assess their utility in reconstructing past t...
Exploiting Correlation in Sparse Signal Recovery Problems: Multiple Measurement Vectors, Block Sparsity, and Time-Varying Sparsity
Multiple Measurement Vectors Block Sparsity Time-Varying Sparsity
2011/6/16
A trend in compressed sensing (CS) is to exploit struc-
ture for improved reconstruction performance. In the
basic CS model (i.e. the single measurement vec-
tor model), exploiting the clustering s...
中国大豆资源的虚拟土贸易及进口依存度分析
自然资源学 大豆资源 虚拟土 进口依存度
2011/12/15
论文把大豆、豆粕和豆油及其它大豆加工制成品等统称为大豆资源,而豆粕和豆油是两大最主要的大豆加工制品。受中国耕地资源限制和国际大豆市场的影响,中国大豆产量徘徊不前;而随着饲料业、畜牧业的发展,以及人们对植物油需求的增加,国内对大豆资源的需求不断增加,大豆及其加工制品的进口量也逐年增加。包括大豆资源在内的农产品及其加工制品,均含有一定的虚拟土。根据生产地生产该产品实际所需要的土地资源数量计算,能反映一...
中国自然资源学会召开在京理事会议（图）
中国自然资源学会 理事会议 中国资源科学成就奖 中国自然资源学会活动先进单位
2011/3/28
2011年2月24日上午，中国自然资源学会2011年在京理事会在中科院地理资源所召开。在京理事、副秘书长、学会所属编辑部主任等35人出（列）席了会议。会议由刘纪远理事长主持。会议确定了常务理事通过通讯投票方式选举产生了我会出席中国科协八大代表及科协第八届委员会委员候选人事宜。