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检索条件"主题词=sparse coding"
2101 条 记 录,以下是2031-2040 订阅
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Protein Expression Molecular Pattern Discovery by Nonnegative Principal Component Analysis
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3rd IAPR International Conference on Pattern Recognition in Bioinformatics
作者: Han, Xiaoxu Scazzero, Joseph Eastern Michigan Univ Dept Math & Bioinformat Program Ypsilanti MI 48197 USA Eastern Michigan Univ Dept Accout & Finance Ypsilanti MI USA
Identifying cancer molecular patterns robustly from large dimensional protein expression data not only has significant impacts on clinical ontology, but also presents a challenge for statistical learning. Principal co... 详细信息
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Source separation using single channel ICA
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SIGNAL PROCESSING 2007年 第8期87卷 1819-1832页
作者: Davies, M. E. James, C. J. Univ Edinburgh IDCOM Edinburgh Midlothian Scotland Univ Edinburgh Joint Res Inst Signal & Image Proc Edinburgh Midlothian Scotland Univ Southampton ISVR Signal Proc & Control Grp Southampton Hants England
Many researchers have recently used independent component analysis (ICA) to generate codebooks or features for a single channel of data. We examine the nature of these codebooks and identify when such features can be ... 详细信息
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Statistical principles in image Modeling
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TECHNOMETRICS 2007年 第3期49卷 249-261页
作者: Wu, Ying Nian Li, Jinhui Liu, Ziqiang Zhu, Song-Chun Univ Calif Los Angeles Dept Stat Los Angeles CA 90024 USA
Images of natural scenes contain a rich variety of visual patterns. To learn and recognize these patterns from natural images, it is necessary to construct statistical models for these patterns. In this review article... 详细信息
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On the computational rationale for generative models
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COMPUTER VISION AND IMAGE UNDERSTANDING 2007年 第1期106卷 130-143页
作者: Pece, Arthur E. C. Heimdall Vis DK-2500 Copenhagen Denmark Univ Copenhagen Dept Comp Sci DK-2100 Copenhagen Denmark
Generative and discriminative models are best defined by the structure of their graphical representation. This paper introduces such a definition and uses it to argue that, in some practical cases, generative models n... 详细信息
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A network that uses few active neurones to code visual input predicts the diverse shapes of cortical receptive fields
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JOURNAL OF COMPUTATIONAL NEUROSCIENCE 2007年 第2期22卷 135-146页
作者: Rehn, Martin Sommer, Friedrich T. Univ Calif Berkeley Redwood Ctr Theoret Neurosci Berkeley CA 94720 USA Royal Inst Technol KTH Sch Comp Sci & Commun SE-10044 Stockholm Sweden
Computational models of primary visual cortex have demonstrated that principles of efficient coding and neuronal sparseness can explain the emergence of neurones with localised oriented receptive fields. Yet, existing... 详细信息
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Bio-inspired networks of visual sensors, neurons, and oscillators
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PROCEEDINGS OF THE IEEE 2007年 第1期95卷 188-214页
作者: Ghosh, Bijoy K. Polpitiya, Ashoka D. Wang, Wenxue Texas Tech Univ Dept Math & Stat Lubbock TX 79409 USA Pacific NW Natl Lab Richland WA 99352 USA
Animals routinely rely on their eyes to localize fixed and moving targets. Such a localization process might include prediction of future target location, recalling a sequence of previously visited places or, for the ... 详细信息
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Learning midlevel image features for natural scene and texture classification
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IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS FOR VIDEO TECHNOLOGY 2007年 第3期17卷 286-297页
作者: Le Borgne, Herve Guerin-Dugue, Anne O'Connor, Noel E. CEA LIST F-92265 Paris France Dublin City Univ Ctr Digital Video Proc Dublin 6 Ireland Lab Images & Signals F-75000 Grenoble France
This paper deals with coding of natural scenes in order to extract semantic information. We present a new scheme to project natural scenes onto a basis in which each dimension encodes statistically independent informa... 详细信息
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Monaural sound source separation by nonnegative matrix factorization with tempora continuity and sparseness criteria
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IEEE TRANSACTIONS ON AUDIO SPEECH AND LANGUAGE PROCESSING 2007年 第3期15卷 1066-1074页
作者: Virtanen, Tuomas Tampere Univ Technol FI-33101 Tampere Finland
An unsupervised learning algorithm for the separation of sound sources in one-channel music signals is presented. The algorithm is based on factorizing the magnitude spectrogram of an input signal into a sum of compon... 详细信息
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Primal sketch: Integrating structure and texture
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COMPUTER VISION AND IMAGE UNDERSTANDING 2007年 第1期106卷 5-19页
作者: Guo, Cheng-en Zhu, Song-Chun Wu, Ying Nian Univ Calif Los Angeles Dept Comp Sci & Stat Los Angeles CA 90095 USA
This article proposes a generative image model, which is called "primal sketch," following Marr's insight and terminology. This model combines two prominent classes of generative models, namely, sparse c... 详细信息
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The cerebellum as a liquid state machine
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NEURAL NETWORKS 2007年 第3期20卷 290-297页
作者: Yamazaki, Tadashi Tanaka, Shigeru RIKEN Brain Sci Inst Lab Visual Neurocomp Wako Saitama 3510198 Japan
We examined closely the cerebellar circuit model that we have proposed previously. The model granular layer generates a finite but very long sequence of active neuron populations without recurrence, which is able to r... 详细信息
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