搜索结果: 31-45 共查到“数理统计学”相关记录2457条 . 查询时间(0.429 秒)
差异性的统计推断方法及其应用（张维、李启寨）
差异性 统计推断方法 应用
2023/2/22
差异性分析是生物医学研究中的一个重要问题。它旨在通过比较两组或多组样本数据之间的差异来识别影响复杂疾病或性状的基因、生物通路、微生物等。针对人类微生物组和水稻耐寒性的差异性分析问题，提出了自适应的分组聚合检验方法，给出了统计显著性的快速算法及其统计性质，利用多尺度分析方法有效地整合水稻耐寒性的两个性状，提出了群体分层校正方法并将其应用到水稻耐寒性的数据中，发现并验证了与水稻耐寒性相关联的基因COL...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Estimating Time-Varying Networks for High-Dimensional Time Series
高维 时间序列 时变网络
2023/4/25
We explore time-varying networks for high-dimensional locally stationary time series, using the large VAR model framework with both the transition and (error) precision matrices evolving smoothly over...
西安交通大学第八届丝绸之路研讨会数学与统计学院分论坛顺利召开（图）
丝绸之路研讨会 数学与统计学院分论坛 第八届 西安交通大学
2022/12/31
2022年12月28日，西安交通大学第八届丝绸之路青年学者研讨会数学与统计学院分论坛于线上成功召开。学院领导、系主任、相关系所教师、学生以及来自法国索邦大学、香港科技大学、匹兹堡大学、清华大学、北京大学等高校的六位青年学者出席本次论坛。论坛由院长孙建永教授主持。
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Policy Choice in Time Series by Empirical Welfare Maximization
经验福利 最大化 时间序列 政策选择
2023/4/25
This paper develops a novel method for policy choice in a dynamic setting where the available data is a multivariate time series. Building on the statistical treatment choice framework, we propose Tim...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Bayesian sequential design for sensitivity experiments with hybrid responses
混合响应 灵敏度实验 贝叶斯顺序设计
2023/4/25
In experimental design, a common problem seen in practice is when the result includes one binary response and multiple continuous responses. However, this problem receives scant attention. Most studie...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Sequential implementation of reconstruction regression
重建回归 顺序实现 空间填充设计
2023/4/26
We propose a sequential method for implementing reconstruction regression. With a space-filling design of a small sample size, we use GP interpolation-based reconstruction regression to build initial ...
This paper is concerned with the factorization and equivalence problems of multivariate polynomial matrices. We present some new criteria for the existence of matrix factorizations for a class of mult...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：非线性期望下的过程与极限定理
非线性期望 过程 极限定理
2023/4/28
在非线性期望下，随机过程与极限理论表现出了与经典概率空间完全不同的性质。比如，连续非增鞅不再是平凡过程；独立同分布随机变量序列的经验均值不再收敛到某个常数。本报告从Feynman-Kac公式出发，介绍非线性期望理论建立的动机，近期的主要进展，以及目前尚未解决的一些具有挑战性的问题。
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：A method to deal with generalized linear regressions in big data
处理 大数据 广义线性回归
2023/4/28
This paper proposes a method to accelerate calculation for generalized linear models in big data. We separate the covariates of full model into several groups to build candidate models. In the process...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Model-free conditional screening for ultrahigh-dimensional survival data via conditional distance correlation
条件距离 相关性 超高维 生存数据 无模型 条件筛选
2023/5/4
How to select the active variables which have significant impact on the event of interest is a very important and meaningful problem in the statistical analysis of ultrahigh-dimensional data. In many ...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Fixed Effects Bayesian Testing in High-Dimensional Linear Mixed Models
高维 线性混合模型 固定效应 贝叶斯检验
2023/5/5
Hypothesis testing on high-dimensional fixed effects is indispensable for investigating the utility of the predictors on response. In this case, the conventional frequentist methods designed for cases...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Defocusing NLS equation with nonzero background: Painleve asymptotics in transition region
非零背景 散焦NLS方程 过渡区 疼痛渐近
2023/5/5
Consider to the Cauchy problem of the defocusing NLS equation with a nonzero background. With the Dbar steepest descent method and double scaling limit, we obtain Painleve asymptotics in two transitio...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Defocusing NLS equation with nonzero background: Soliton resolution in soliton region
非零背景 散焦NLS方程 孤子区域 孤子分辨率
2023/5/5
Consider to the Cauchy problem of the defocusing NLS equation with a nonzero background. With the Dbar generalization of the nonlinear steepest descent method to compute the leading order approximatio...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Percolation in Strongly Correlated Systems: The Massless Gaussian Field
强相关系统 渗透 无质量 高斯场
2023/5/5
In this talk, we will show several results for correlated nearest neighbor site percolation on Z^d. In particular, we will show that in three dimensions the strongly correlated massless harmonic cryst...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：一些可靠性与工业统计的研究介绍及科研经验分享
可靠性 工业统计 研究介绍 科研经验分享
2023/5/5
目前智能系统的应用非常广泛，智能系统包含了硬件与软件，及由各种传感器收集的各类数据，如何给系统建模与利用经典统计及数据驱动方法，有效预测及协助提高系统安全及可靠性是一个重要的实际问题。通过简单介绍一些早期可靠性与工业统计的研究及在研究生培养方面的经验，我们亦探讨有助于学生职业发展的学习研究方法，让科研及学生培养给社会做出更大的贡献。