Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 87 for “"Baum"”.
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The Baum-Connes Map for a Smooth Groupoid
The definition of the Baum-Connes map is extended to the case of any smooth groupoid. Then we prove that the Baum-Connes map is invariant under the groupoid equivalence.
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Experiments with hidden Markov models
… chains with generative transitions and the Baum-Welch algorithm. We explore generating the hypothesis model in various ways. We use the hypothesis model as the original model. And we investigate the feasibility of implementing a sequential version of the Baum-Welch algorithm. This research …
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Two new approaches for learning Hidden Markov Models
… to infer these hidden variables has been the Baum-Welch algorithm. This thesis utilizes insights from two related fields. The first insight is from Angluin's seminal paper on learning regular sets from queries and counterexamples, which produces a simple and intuitive algorithm that …
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Group Matching and Group Contingencies
… identified by Herrnstein and modified by Baum (1974) was later applied to foraging animals, given the option of two patches (Kennedy & Gray, 1993). This application lead to the demonstration that animals (Baum & Kraft, 1998) and humans (Kraft & Baum, 2001) will engage in emergent group …
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Fórmulas residuais para folheações logarítmicas e aplicações
… o problema de encontrar versões do Teorema Baum-Bott para folheações logarítmicas ao longo de um divisor. Vamos considerar os casos em que a hipersuperfície D, que compactifica a variedade ambiente, seja uma hipersuperfície suave e também o caso tenha singularidades do tipo cruzamento normal. …
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Automatic Phoneme Recognition with Segmental Hidden Markov Models
… (HMM) based phoneme models are trained using the Baum-Welch re-estimation procedure. Recognition and segmentation of the phonemes in the continuous speech is performed by a Segmental Viterbi Search on a Segmental Ergodic HMM for the phoneme states. We describe in detail the three phases of the …
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One-vector representations of stochastic signals for pattern recognition
… for HMMs, which we refer to as the boosting Baum-Welch algorithm. In the proposed boosting Baum-Welch algorithm, we formulate the HMM learning problem as an incremental optimization procedure which performs a sequential gradient descent search on a loss functional for a good fit in an inner …
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Parameter estimation in HMMs with guaranteed convergence
… The EM algorithm for HMMs, also known as the Baum-Welch algorithm, was previously studied by Yang, Balakrishnan, and Wainwright [1] but without global convergence guarantees. In this paper we propose a "local" version of the EM algorithm and prove absolute convergence of this algorithm to the …
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Visual data mining in intrinsic hierarchical complex biodata
… hierarchische Struktur auf (z.B. Spezies im Baum des Lebens). Diese Eigenschaft sollte bei der Entwicklung neuer Ansätze zur Analyse komplexer Daten berücksichtigt werden. Im Bereich des maschinellen Lernens steht eine große Zahl von Computeralgorithmen zur Verfügung, um diejenigen …
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Erzeugung von Wertholz in Kiefernbeständen in Südbrasilien
… und Edelhölzern kontinuierlich zu. Die Z.-Baum-orientierte Auslesedurchforstung in Verbindung mit einer Wertästung zeigte sich als ist eine geeignete Methode zur Starkholzerzeugung in Kiefernbeständen. Weiterhin wurde die Möglichkeit des Kiefernumbaus in Mischbestände erprobt sowie die …
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Aspects of laryngotracheobronchitis in African children
… recent term for infective upper airway disease (Baum, 1924). Prior to this "croup" was used by both public and profession to describe a train of laryngeal symptoms which sometimes were due to infection. The word derives from the Anglosaxon "kropan" (Neffson and Wishik, 1934a) or "hreopan" …
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The odd chern character and obstruction theory
… point a formula described in the paper of Baum & Douglas, [BmDg] the odd-degree component of the Chern character is is analyzed. Our presentation uses the obstruction theory definition Chern characteristic classes in order to emphasize the connections with the even-degree component (see …
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Applying binary decision diagrams to learn hidden Markov models
… of Hidden Markov Models, by building upon the Baum-Welch (BW) algorithm’s methodology. EM-BDD utilises the Forward-Backward procedure, a cornerstone of BW, adapting it to operate on Binary Decision Diagrams (BDDs). The time and memory complexity of the algorithm is contingent on the size of the …
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A uniform representation for visual concepts
… in videos. We use a discriminative variant of Baum-Welch to learn the parameters for our word models, and demonstrate that our approach is able to learn words capturing appearance, spatial relations, and temporal dynamics.
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An integrated performance model learning and planning approach for optimal infrastructure facility maintenance under partial observability
… estimate of performance model using the Baum-Welch algorithm. Both offline and online versions of the learning algorithm are presented. The probing-optimizing dichotomy, also known as exploration-exploitation dilemma, in choosing between the best strategy based on the past knowledge of …
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Nutzung molekularer Hochdurchsatz-Verfahren zur schnellen und eingehenden Artenbestimmung von Pilzgesellschaften
… Mykorrhizagesellschaft zweier unterschiedlicher Baumarten beschrieben. Weiterhin haben wir den Einfluss sechs unterschiedlicher Waldbäume auf die Zusammensetzung ihrer Bodenpilzgesellschaften untersucht, indem wir über 180 000 Sequenzen (454 Pyrosequenzierung) analysiert haben. Die meisten der …
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Geometric and Combinatorial Structures on Graphs
… vierten Kapitels. Das Problem einen spannenden Baum mit größtmöglicher Anzahl von Blättern zu konstruieren ist NP-schwer. Wir zeigen für bestimmte Graphenklassen, dass alle Graphen mit n Knoten spannende Bäume mit mindestens n/a+c Blättern haben. Weiterhin konstruieren wir Beispiele aus den …
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Building a diverse health professions workforce? Changes in enrollment and completion among underserved populations in grant supported health professions pathways
… access to healthcare and health insurance (Baum et al., 2013), c) improved civic engagement including a higher propensity to vote (Baum et al., 2013), d) increased tax revenues (Baum et al., 2013, Economic Modeling Specialists International, 2014), job security and stability, e) reduced …
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Interaction of spatial variability characterized by soil electrical conductivity and plant water status related to generative growth of fruit trees
… bei dem teilflächenspezifisch oder an den Einzelbaum angepasste Maßnahmen eine ressourcenschonende, intensitve Produktion ermöglichen. Die Datengrundlage wird aus räumlich aufgelösten Messungen aus der Produktionsanlage gewonnen, wobei sowohl kurzfristige Faktoren wie der effektive …
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Quality of Life and Sexual Functioning of Men Treated with Sildenafil Citrate (Viagra)
… 20 million American men (Gottesman & Baum, 1997). This may be either partial or complete erectile dysfunction, which can present a change in life style. The National Institute of Health [NIH] (1992) recognized that men are increasingly identifying that impotence does not need to be a …
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