咨询与建议

限定检索结果

文献类型

  • 3,798 篇 期刊文献
  • 699 篇 会议
  • 40 篇 学位论文
  • 11 篇 资讯
  • 2 册 图书

馆藏范围

  • 4,550 篇 电子文献
  • 0 种 纸本馆藏

日期分布

学科分类号

  • 3,062 篇 理学
    • 2,313 篇 统计学(可授理学、...
    • 974 篇 数学
    • 609 篇 生物学
    • 168 篇 物理学
    • 42 篇 系统科学
    • 38 篇 地球物理学
  • 2,065 篇 工学
    • 1,259 篇 计算机科学与技术...
    • 658 篇 电气工程
    • 202 篇 信息与通信工程
    • 175 篇 控制科学与工程
    • 155 篇 软件工程
    • 76 篇 电子科学与技术(可...
    • 73 篇 机械工程
    • 70 篇 仪器科学与技术
    • 50 篇 环境科学与工程(可...
    • 50 篇 生物医学工程(可授...
    • 36 篇 交通运输工程
    • 35 篇 测绘科学与技术
  • 1,214 篇 经济学
    • 1,134 篇 应用经济学
    • 129 篇 理论经济学
  • 406 篇 医学
    • 204 篇 基础医学(可授医学...
    • 159 篇 临床医学
    • 157 篇 公共卫生与预防医...
    • 45 篇 特种医学
  • 390 篇 农学
    • 38 篇 作物学
  • 354 篇 管理学
    • 240 篇 管理科学与工程(可...
    • 53 篇 工商管理
    • 51 篇 公共管理
  • 143 篇 教育学
    • 133 篇 心理学(可授教育学...
    • 34 篇 教育学
  • 32 篇 法学
  • 12 篇 文学
  • 4 篇 军事学
  • 4 篇 艺术学
  • 2 篇 哲学

主题

  • 4,550 篇 em algorithm
  • 186 篇 maximum likeliho...
  • 179 篇 maximum likeliho...
  • 162 篇 mixture models
  • 161 篇 missing data
  • 152 篇 mixture model
  • 112 篇 clustering
  • 73 篇 hidden markov mo...
  • 71 篇 gaussian mixture...
  • 67 篇 incomplete data
  • 65 篇 parameter estima...
  • 60 篇 model selection
  • 56 篇 bootstrap
  • 55 篇 kalman filter
  • 55 篇 longitudinal dat...
  • 54 篇 hidden markov mo...
  • 51 篇 model-based clus...
  • 48 篇 expectation-maxi...
  • 47 篇 classification
  • 45 篇 random effects

机构

  • 24 篇 univ n carolina ...
  • 24 篇 univ missouri de...
  • 23 篇 penn state univ ...
  • 22 篇 univ washington ...
  • 22 篇 mcmaster univ de...
  • 21 篇 univ hong kong d...
  • 21 篇 mcmaster univ de...
  • 20 篇 univ michigan de...
  • 20 篇 indian inst tech...
  • 19 篇 shanghai univ fi...
  • 19 篇 univ connecticut...
  • 18 篇 harvard univ dep...
  • 16 篇 harvard univ sch...
  • 16 篇 univ florida dep...
  • 16 篇 univ washington ...
  • 16 篇 univ calif river...
  • 15 篇 guangzhou univ s...
  • 15 篇 univ waterloo de...
  • 14 篇 peking univ lmam...
  • 14 篇 univ british col...

作者

  • 39 篇 kundu debasis
  • 27 篇 yao weixin
  • 27 篇 balakrishnan n.
  • 26 篇 lachos victor h.
  • 23 篇 sun jianguo
  • 19 篇 tian guo-liang
  • 18 篇 ma jinwen
  • 17 篇 pal suvra
  • 17 篇 okamura hiroyuki
  • 17 篇 huang biao
  • 17 篇 dohi tadashi
  • 16 篇 bartolucci franc...
  • 16 篇 peng yingwei
  • 16 篇 wu rongling
  • 15 篇 shen pao-sheng
  • 15 篇 punzo antonio
  • 14 篇 zhang jiajia
  • 14 篇 zeng donglin
  • 14 篇 mclachlan gj
  • 14 篇 mclachlan geoffr...

语言

  • 4,155 篇 英文
  • 369 篇 其他
  • 21 篇 中文
  • 3 篇 德文
  • 3 篇 法文
  • 2 篇 西班牙文
  • 1 篇 意大利文
  • 1 篇 日文
检索条件"主题词=em algorithm"
4550 条 记 录,以下是3791-3800 订阅
排序:
A problem of dimensionality in normal mixture analysis
收藏 引用
SCANDINAVIAN JOURNAL OF STATISTICS 2002年 第3期29卷 485-500页
作者: Bee, M Flury, B Indiana Univ Bloomington IN 47405 USA
Suppose the p-variate random vector W, partitioned into q variables W-1 and p - q variables W-2, follows a multivariate normal mixture distribution. If the investigator is mainly interested in estimation of the parame... 详细信息
来源: 评论
Exact computation of the observed information matrix for hidden Markov models
收藏 引用
JOURNAL OF COMPUTATIONAL AND GRAPHICAL STATISTICS 2002年 第3期11卷 678-689页
作者: Lystig, TC Hughes, JP Chalmers Dept Math Sci S-41296 Gothenburg Sweden Univ Washington Dept Biostat Seattle WA 98195 USA
This article describes a new algorithm for exact computation of the observed information matrix in hidden Markov models that may be performed in a single pass through the data. The score vector and log-likelihood are ... 详细信息
来源: 评论
Generative-model-based tracking by cluster analysis of image differences
收藏 引用
ROBOTICS AND AUTONOMOUS SYSTemS 2002年 第3-4期39卷 181-194页
作者: Pece, AEC Univ Copenhagen Dept Comp Sci DK-2100 Copenhagen Denmark
The em algorithm is used to track moving objects as clusters of pixels significantly different from the corresponding pixels in a reference image. The underlying cluster model is Gaussian in image space, but not in gr... 详细信息
来源: 评论
An expectation-maximisation framework for segmentation and grouping
收藏 引用
IMAGE AND VISION COMPUTING 2002年 第9-10期20卷 725-738页
作者: Robles-Kelly, A Hancock, ER Univ York Dept Comp Sci York YO1 5DD N Yorkshire England
This paper casts the problem of perceptual grouping into an evidence combining setting using the apparatus of the em algorithm. We are concerned with recovering a perceptual arrangement graph for line-segments using e... 详细信息
来源: 评论
Continuous-time hidden Markov models for network performance evaluation
收藏 引用
PERFORMANCE EVALUATION 2002年 第1-4期49卷 129-146页
作者: Wei, W Wang, B Towsley, D Univ Massachusetts Dept Comp Sci Amherst MA 01003 USA
In this paper, we study the use of continuous-time hidden Markov models (CT-HMMs) for network protocol and application performance evaluation. We develop an algorithm to infer the CT-HMM from a series of end-to-end de... 详细信息
来源: 评论
Continuous-time hidden Markov models for network performance evaluation
Continuous-time hidden Markov models for network performance...
收藏 引用
22nd International Symposium on Computer Performance Modeling Measurement and Evaluation
作者: Wei, W Wang, B Towsley, D Univ Massachusetts Dept Comp Sci Amherst MA 01003 USA
In this paper, we study the use of continuous-time hidden Markov models (CT-HMMs) for network protocol and application performance evaluation. We develop an algorithm to infer the CT-HMM from a series of end-to-end de... 详细信息
来源: 评论
Partition-ligation-expectation-maximization algorithm for haplotype inference with single-nucleotide polymorphisms
收藏 引用
AMERICAN JOURNAL OF HUMAN GENETICS 2002年 第5期71卷 1242-1247页
作者: Qin, ZHS Niu, TH Liu, JS Harvard Univ Dept Stat Cambridge MA 02138 USA Harvard Univ Sch Publ Hlth Program Populat Genet Boston MA 02115 USA
Presents the combination of partition-ligation (PL) strategy and expectation-maximization (em)-based algorithm in mapping single-nucleotide polymorphisms in human genomes. Application of PL-em on the lipoprotein lipas... 详细信息
来源: 评论
Classification of gait patterns combining their spatial and temporal properties
Classification of gait patterns combining their spatial and ...
收藏 引用
International Conference on Machine Learning and Cybernetics
作者: He, Q Debrunner, C Carollo, JJ Colorado Sch Mines Div Engn Golden CO 80401 USA
Gait analysis and classification is very important in medical diagnostics as well as athletic performance analysis. In this paper, we present a method combining spatial and temporal properties of features to classify ... 详细信息
来源: 评论
Multicomponent signal classification using the PMHT algorithm
Multicomponent signal classification using the PMHT algorith...
收藏 引用
5th International Conference on Information Fusion (FUSION 2002)
作者: Ainsleigh, P Luginbuhl, T USN Undersea Warfare Ctr Newport RI 02841 USA
The probabilistic multi-hypothesis tracking (PMHT) algorithm is extended for application to classification. The PMHT model is reformulated as a bank of continuous-state hidden Harkov models, allowing for supervised le... 详细信息
来源: 评论
A non-linear time series approach to modelling asymmetry in stock market indexes
收藏 引用
Statistical Methods and Applications 2002年 第2期11卷 201-216页
作者: Amendola, Alessandra Storti, Giuseppe Dipartimento di Scienze Economiche e Statistiche Università di Salerno 84084 Fisciano (SA) Via Ponte Don Melillo Italy
In this paper we analyse the performances of a novel approach to modelling non-linear conditionally heteroscedastic time series characterised by asymmetries in both the conditional mean and variance. This is based on ... 详细信息
来源: 评论