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检索条件"主题词=Expectation Maximization Algorithm"
643 条 记 录,以下是601-610 订阅
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Refining motifs by improving information content scores using neighborhood profile search
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algorithmS FOR MOLECULAR BIOLOGY 2006年 第1期1卷 23-23页
作者: Reddy, Chandan K. Weng, Yao-Chung Chiang, Hsiao-Dong Cornell Univ Sch Elect & Comp Engn Ithaca NY 14853 USA
The main goal of the motif finding problem is to detect novel, over-represented unknown signals in a set of sequences (e.g. transcription factor binding sites in a genome). The most widely used algorithms for finding ... 详细信息
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A reassessment of dynamic characteristics of the Quincy Bayview Bridge using output-only identification techniques
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EARTHQUAKE ENGINEERING & STRUCTURAL DYNAMICS 2005年 第7期34卷 787-805页
作者: Pridham, BA Wilson, JC McMaster Univ Dept Civil Engn Hamilton ON L8S 4L7 Canada
A reassessment of the dynamic characteristics of the 542 m cable-stayed Bayview Bridge in Quincy, Illinois, is presented using a newly developed output-only system identification technique. The technique is applied to... 详细信息
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Generative factor analyzed HMM for automatic speech recognition
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SPEECH COMMUNICATION 2005年 第4期45卷 435-454页
作者: Yao, KS Paliwal, KK Lee, TW Univ Calif San Diego Inst Neural Computat La Jolla CA 92093 USA Griffith Univ Sch Microelect Engn Brisbane Qld 4111 Australia
We present a generative factor analyzed hidden Markov model (GFA-HMM) for automatic speech recognition. In a standard HMM, observation vectors are represented by mixture of Gaussians (MoG) that are dependent on discre... 详细信息
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Clustering spatial data with a hybrid EM approach
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PATTERN ANALYSIS AND APPLICATIONS 2005年 第1-2期8卷 139-148页
作者: Hu, TM Sung, SY HanShan Normal Univ Sch Math & Informat Technol Chaozhou 521041 Guangdong Peoples R China Natl Univ Singapore Dept Comp Sci Singapore 117543 Singapore
In spatial clustering, in addition to the object similarity in the normal attribute space, similarity in the spatial space needs to be considered and objects assigned to the same cluster should usually be close to one... 详细信息
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Identification of tag single-nucleotide polymorphisms in regions with varying linkage disequilibrium
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BMC GENETICS 2005年 第Sup1期6卷 S73-S73页
作者: Duggal, P Gillanders, EM Mathias, RA Ibay, GP Klein, AP Baffoe-Bonnie, AG Ou, L Dusenberry, IP Tsai, YY Chines, PS Doan, BQ Bailey-Wilson, JE NHGRI Inherited Dis Res Branch NIH Baltimore MD USA Fox Chase Canc Ctr Div Populat Sci Philadelphia PA 19111 USA Johns Hopkins Med Sch CIDR Baltimore MD USA NHGRI Genome Technol Branch NIH Bethesda MD 20892 USA
We compared seven different tagging single-nucleotide polymorphism ( SNP) programs in 10 regions with varied amounts of linkage disequilibrium (LD) and physical distance. We used the Collaborative Studies on the Genet... 详细信息
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A memory-based theory of verbal cognition
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COGNITIVE SCIENCE 2005年 第2期29卷 145-193页
作者: Dennis, S Univ Colorado Inst Cognit Sci Boulder CO 80301 USA
The syntagmatic paradigmatic model is a distributed, memory-based account of verbal processing. Built on a Bayesian interpretation of string edit theory, it characterizes the control of verbal cognition as the retriev... 详细信息
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Learning a spelling error model from search query logs  05
Learning a spelling error model from search query logs
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Human Language Technology Conference and Conference on Empirical Methods in Natural Language Processing, HLT/EMNLP 2005, Co-located with the 2005 Document Understanding Conference, DUC and the 9th International Workshop on Parsing Technologies, IWPT
作者: Ahmad, Farooq Kondrak, Grzegorz Department of Electrical and Computer Engineering University of Alberta Edmonton Canada Department of Computing Science University of Alberta Edmonton Canada
Applying the noisy channel model to search query spelling correction requires an error model and a language model. Typically, the error model relies on a weighted string edit distance measure. The weights can be learn... 详细信息
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Validity index for crisp and fuzzy clusters
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PATTERN RECOGNITION 2004年 第3期37卷 487-501页
作者: Pakhira, MK Bandyopadhyay, S Maulik, U Kalyani Govt Engn Coll Dept Comp Sci & Technol Kalyani 741235 W Bengal India Indian Stat Inst Machine Intelligence Unit Kolkata 700108 W Bengal India Kalyani Govt Engn Coll Dept Comp Sci & Technol Kalyani 741235 W Bengal India
In this article, a cluster validity index and its fuzzification is described, which can provide a measure of goodness of clustering on different partitions of a data set. The maximum value of this index, called the PB... 详细信息
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Development and evaluation of MRI based Bayesian image reconstruction methods for PET
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COMPUTERIZED MEDICAL IMAGING AND GRAPHICS 2004年 第4期28卷 177-184页
作者: Wang, CH Chen, JC Liu, RS Natl Yang Ming Univ Inst Radiol Sci Taipei 112 Taiwan Natl Yang Ming Univ Sch Med Taipei 112 Taiwan Taipei Vet Gen Hosp Natl PET Cyclotron Ctr Taipei Taiwan Mackay Mem Hosp Dept Radiat Oncol Taipei Taiwan
A maximum a posteriori algorithm, which incorporates correlated magnetic resonance images into the processing of positron emission tomography reconstruction with the aim of improving image quality was developed. The l... 详细信息
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Identification of base-excited structures using output-only parameter estimation
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EARTHQUAKE ENGINEERING & STRUCTURAL DYNAMICS 2004年 第1期33卷 133-155页
作者: Pridham, BA Wilson, JC McMaster Univ Dept Civil Engn Hamilton ON L8S 4L7 Canada
This paper presents a new identification technique for the extraction of modal parameters of structural systems subjected to base excitation. The technique uses output-only measurements of the structural response. A c... 详细信息
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