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by Mow Wai Ho. / Thesis (M.Phil.)--Chinese University of Hong Kong, 1991. / Bibliographies: leaves 98-104. / Chapter 1 --- Introduction --- p.1 / Chapter 1.1 --- Channel Model and Other Basic Assumptions --- p.5 / Chapter 1.2 --- Complexity Measure --- p.8 / Chapter 1.3 --- Maximum Likelihood Sequence Estimator --- p.9 / Chapter 1.4 --- The Viterbi Algorithm ´ؤ An Implementation of MLSE --- p.11 / Chapter 1.5 --- Error Performance of the Viterbi Algorithm --- p.14 / Chapter 1.6 --- Suboptimal Viterbi-like Algorithms --- p.17 / Chapter 1.7 --- Trends of Digital Transmission and MLSE --- p.19 / Chapter 2 --- New Formulation of MLSE --- p.21 / Chapter 2.1 --- The Truncated Viterbi Algorithm --- p.21 / Chapter 2.2 --- Choice of Truncation Depth --- p.23 / Chapter 2.3 --- Decomposition of MLSE --- p.26 / Chapter 2.4 --- Lattice Interpretation of MLSE --- p.29 / Chapter 3 --- The Closest Vector Problem --- p.34 / Chapter 3.1 --- Basic Definitions and Facts About Lattices --- p.37 / Chapter 3.2 --- Lattice Basis Reduction --- p.40 / Chapter 3.2.1 --- Weakly Reduced Bases --- p.41 / Chapter 3.2.2 --- Derivation of the LLL-reduction Algorithm --- p.43 / Chapter 3.2.3 --- Improved Algorithm for LLL-reduced Bases --- p.52 / Chapter 3.3 --- Enumeration Algorithm --- p.57 / Chapter 3.3.1 --- Lattice and Isometric Mapping --- p.58 / Chapter 3.3.2 --- Enumerating Points in a Parallelepiped --- p.59 / Chapter 3.3.3 --- Enumerating Points in a Cube --- p.63 / Chapter 3.3.4 --- Enumerating Points in a Sphere --- p.64 / Chapter 3.3.5 --- Comparisons of Three Enumeration Algorithms --- p.66 / Chapter 3.3.6 --- Improved Enumeration Algorithm for the CVP and the SVP --- p.67 / Chapter 3.4 --- CVP Algorithm Using the Reduce-and-Enumerate Approach --- p.71 / Chapter 3.5 --- CVP Algorithm with Improved Average-Case Complexity --- p.72 / Chapter 3.5.1 --- CVP Algorithm for Norms Induced by Orthogonalization --- p.73 / Chapter 3.5.2 --- Improved CVP Algorithm using Norm Approximation --- p.76 / Chapter 4 --- MLSE Algorithm --- p.79 / Chapter 4.1 --- MLSE Algorithm for PAM Systems --- p.79 / Chapter 4.2 --- MLSE Algorithm for Unimodular Channel --- p.82 / Chapter 4.3 --- Reducing the Boundary Effect for PAM Systems --- p.83 / Chapter 4.4 --- Simulation Results and Performance Investigation for Example Channels --- p.86 / Chapter 4.5 --- MLSE Algorithm for Other Lattice-Type Modulation Systems --- p.91 / Chapter 4.6 --- Some Potential Applications --- p.92 / Chapter 4.7 --- Further Research Directions --- p.94 / Chapter 5 --- Conclusion --- p.96 / Bibliography --- p.104

This thesis investigates the manner in which the action sequences of contemporary Hollywood cinema reflect and constitute ways of imagining space. The thesis proposes that these sequences are highly spatialised presentations of bodily interaction with the world, and as such manifest cultural anxieties regarding the relationship between the individual and the built environment, and work to assure their viewers of the capacity of the human form to survive the disorienting spaces of contemporary architecture, globalisation and technology. In order to demonstrate this, the aesthetic and formal properties of action sequences are read alongside critical work exploring how space shapes social life, including influential texts by Henri Lefebvre, Michel de Certeau, Fredric Jameson and others. These readings reveal that both action sequences and critical spatial theory are similarly attentive to the difficulties, contradictions and possibilities of built space. A range of action sequences from Hollywood films of the last fifteen years, including sequences from Mission: Impossible - Ghost Protocol, The International, The Bourne Identity, The Bourne Supremacy, The Bourne Ultimatum, Jumper, Casino Royale, Quantum of Solace, Sucker Punch, Inception, Swordfish, The Matrix, The Matrix Reloaded, TRON: Legacy, Resident Evil, Resident Evil: Afterlife and Dredd 3D are analysed for how they depict space and spatial agency. Rather than concentrating upon the narratives of these films, the chapters of the thesis deal in turn with the ways in which action sequences express contemporary developments within the built environment; the consequences of globalisation; the impact of these spatial changes upon mental life; the challenges to bodily engagement raised by digital technology and cyberspace; and the modifications to representing space on film prompted by stereoscopic exhibition. Examinations of these sequences are used to build a model of the action sequence that suggests spatial appropriation and ideas around place-creation are crucial elements of the form.

Recent research in feature learning has been extended to sequence data, where each instance consists of a sequence of heterogeneous items with a variable length. However, in many real-world applications, the data exists in the form of attributed sequences, which is composed of a set of fixed-size attributes and variable-length sequences with dependencies between them. In the attributed sequence context, feature learning remains challenging due to the dependencies between sequences and their associated attributes. In this dissertation, we focus on analyzing and building deep learning models for four new problems on attributed sequences. First, we propose a framework, called NAS, to produce feature representations of attributed sequences in an unsupervised fashion. The NAS is capable of producing task independent embeddings that can be used in various mining tasks of attributed sequences. Second, we study the problem of deep metric learning on attributed sequences. The goal is to learn a distance metric based on pairwise user feedback. In this task, we propose a framework, called MLAS, to learn a distance metric that measures the similarity and dissimilarity between attributed sequence feedback pairs. Third, we study the problem of one-shot learning on attributed sequences. This problem is important for a variety of real-world applications ranging from fraud prevention to network intrusion detection. We design a deep learning framework OLAS to tackle this problem. Once the OLAS is trained, we can then use it to make predictions for not only the new data but also for entire previously unseen new classes. Lastly, we investigate the problem of attributed sequence classification with attention model. This is challenging that now we need to assess the importance of each item in each sequence considering both the sequence itself and the associated attributes. In this work, we propose a framework, called AMAS, to classify attributed sequences using the information from the sequences, metadata, and the computed attention. Our extensive experiments on real-world datasets demonstrate that the proposed solutions significantly improve the performance of each task over the state-of-the-art methods on attributed sequences.

Lai Kim Fung. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2005. / Includes bibliographical references (leaves 55-57). / Abstracts in English and Chinese. / Chapter 1 --- Introduction --- p.1 / Chapter 2 --- Likelihood Ratio Test Statistic --- p.6 / Chapter 2.1 --- Introduction --- p.6 / Chapter 2.2 --- Formulation --- p.6 / Chapter 2.3 --- Likelihood Ratio Type Statistic --- p.7 / Chapter 2.4 --- Dirichlet Distribution --- p.8 / Chapter 2.5 --- Edgeworth Expansion --- p.12 / Chapter 3 --- Divided Difference --- p.15 / Chapter 3.1 --- Introduction --- p.15 / Chapter 3.2 --- Definition of Divided Difference --- p.15 / Chapter 3.3 --- Theorem --- p.17 / Chapter 3.4 --- Proof of the Theorem --- p.18 / Chapter 3.5 --- Application of Theorem --- p.19 / Chapter 4 --- Computational Results --- p.22 / Chapter 4.1 --- Introduction --- p.22 / Chapter 4.2 --- Critical Values for Moderate and Large Sample Sizes --- p.22 / Chapter 4.3 --- Critical Values for Small Sample Sizes --- p.23 / Chapter 4.3.1 --- Exact Critical Values --- p.23 / Chapter 4.3.2 --- Edgeworth Expansion Results --- p.23 / Chapter 4.3.3 --- Simulation Results --- p.23 / Chapter 4.4 --- Power --- p.24 / Chapter 5 --- Illustrative Examples --- p.29 / Chapter 5.1 --- Stanford Heart Transplant Data --- p.29 / Chapter 5.1.1 --- The Data --- p.29 / Chapter 5.1.2 --- Result --- p.31 / Chapter 5.2 --- Air Conditioning Data --- p.31 / Chapter 5.2.1 --- The Data --- p.31 / Chapter 5.2.2 --- Result --- p.32 / Chapter 5.3 --- Insulating Fluid Failure Data --- p.33 / Chapter 5.3.1 --- The Data --- p.33 / Chapter 5.3.2 --- Result --- p.33 / Chapter 6 --- Conclusion and Further Research Topic --- p.35 / Chapter 6.1 --- Conclusion --- p.35 / Chapter 6.2 --- Further Research Topic --- p.38 / Appendix A --- p.39 / Appendix B --- p.46 / Bibliography --- p.55

Kwan Ho-yuet. / "April 2004." / Thesis (Ph.D.)--Chinese University of Hong Kong, 2004. / Includes bibliographical references (p. 98-[103]). / Electronic reproduction. Hong Kong : Chinese University of Hong Kong, [2012] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Electronic reproduction. Ann Arbor, MI : ProQuest Information and Learning Company, [200-] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Mode of access: World Wide Web. / Abstracts in English and Chinese.

Made available in DSpace on 2014-06-11T19:30:54Z (GMT). No. of bitstreams: 0 Previous issue date: 2008-04-25Bitstream added on 2014-06-13T19:19:39Z : No. of bitstreams: 1 teixeira_wg_me_botib.pdf: 944579 bytes, checksum: 046ae2a3b20fa26acc2b231873f2a3af (MD5) / Universidade Estadual Paulista (UNESP) / O genoma dos organismos eucariotos apresenta-se organizado em seqüências simples e repetidas. As seqüências repetidas de DNA estão presentes em centenas a milhares de cópias dispersas ou agrupadas no genoma e localizam-se preferencialmente em regiões heterocromáticas, desempenhando papel relevante na organização do genoma desses organismos. Nesse sentido, a realização de estudos genéticos básicos sobre a organização genômica dessas seqüências repetidas é fundamental para uma melhor compreensão do seu papel biológico assim como o entendimento de sua dinâmica evolutiva entre os diversos grupos de vertebrados. Os Cichlidae constituem uma das mais especiosas famílias de peixes, com cerca de 3.000 espécies distribuídas pela América Central e do Sul, África, e sudeste da Índia. Este grupo passou por um rápido e extenso processo de radiação adaptativa ao longo dos tempos, constituindo-se em importantes entidades biológicas para a realização de estudos evolutivos. Dentre os Cichlidae, as espécies do gênero Cichla (tucunarés), com distribuição exclusiva na América do Sul, apresentam grande importância ecológica e econômica. No entanto, estudos genéticos envolvendo espécies desse gênero são ainda escassos. Assim, o presente trabalho teve por objetivo isolar e caracterizar seqüências repetidas de DNA no genoma de Cichla kelberi. Elementos repetidos de DNA foram isolados por PCR (elementos Rex1, Rex3, Rex6 e Tc1) e digestão enzimática (elemento Tuc), seqüenciados e mapeados cromossomicamente por FISH para o estudo de seu padrão de distribuição no genoma. O elemento Tuc apresentou elevada similaridade com seqüências do gene da transcriptase reversa de Oryzias melastigma, o que sugere tratar-se de um elemento retrotransponível. Análises comparativas do elemento Tuc a bancos de sequência mostraram alta similaridade... / The genome of eucaryote organisms is organized into single and repetitive sequences. The repetitive DNA sequences are represented by hundreds to thousands of dispersed or tandem-arrayed copies preferentially localized on the heterochromatic regions, having important function on the genome organization of the organisms. Therefore, the development of basic genetic studies about the genome organization of these repetitive sequences are fundamental to a better comprehension of their biologic role and the understanding of their evolutionary dinamics. The Cichlidae are one of the most diverse fish families, having about 3.000 species distributed around Central and South America, Africa and Southeast India. This group underwent a large and rapid process of adaptative radiation, becoming an important biological model. Among the Cichlidae, the species of the genera Cichla (tucunarés), with exclusive distribution in South America, have a significative economic and ecologic importance. However genetic studies on species of this genera are scarce. Therefore, this work had the aim to isolate and characterize repetitive DNA sequences of the genome of Cichla kelberi. Repetitive DNA sequences were isolated using PCR (elements Rex1, Rex3, Rex6 and Tc1) and restriction digestion (element Tuc), sequenced and their genome distribution determined by FISH. The Tuc element showed high similarity to sequences of reverse transcriptase gene of the fish Oryzias melastigma, which suggests that such element correspond to an retrotransposon element. Comparative analysis of the Tuc element to DNA sequence data bank showed high similarity with repetitive sequences in the genome of several vertebrates, including fishes, amphibians and mammals. Results of FISH showed an accumulation of obtained elements preferentially in centromeres of all chromosomes of the complement, and few telomeric blocks in some... (Complete abstract click electronic access below)