Search for dissertations about: "topic models"

Showing result 1 - 5 of 267 swedish dissertations containing the words topic models.

2. 1. Correlated materials : models and methods

   Author : Hugo Strand; Göteborgs universitet; Göteborgs universitet; Gothenburg University; []
   Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; correlated electrons; Hubbard model; multiband Hubbard model; dynamical mean field theory; exact diagonalization; Landau theory; Mott metal-insulator transition; Gutzwiller method; many-body point group symmetry; ironchalcogenides; Kanamori interaction; Slater-Condon interaction;

   Abstract : This thesis encompass a series of studies on methods and models for electron systems with local interactions, relevant for correlated materials. The first study focus on the canonical model for local correlation, the Hubbard model. READ MORE

4. 2. Scalable and Efficient Probabilistic Topic Model Inference for Textual Data

   Author : Måns Magnusson; Mattias Villani; Marco Kuhlmann; Jordan Boyd-Graber; Linköpings universitet; []
   Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; NATURAL SCIENCES; Text analysis; Bayesian inference; Markov chain Monte Carlo; topic models; Textanalys; Bayesiansk inferens; Markov chain Monte Carlo; temamodeller;

   Abstract : Probabilistic topic models have proven to be an extremely versatile class of mixed-membership models for discovering the thematic structure of text collections. There are many possible applications, covering a broad range of areas of study: technology, natural science, social science and the humanities. READ MORE

5. 3. Multi-robot Information Fusion : Considering spatial uncertainty models

   Author : Lars Andersson; Karl-Erik Rydberg; Aarne Halme; Linköpings universitet; []
   Keywords : TECHNOLOGY; TEKNIKVETENSKAP;

   Abstract : The work presented in this thesis covers the topic of deployment for mobile robot teams. By connecting robots in teams they can perform a better job than each individual is capable of. It also gives redundancy, increases robustness, provides scalability, and increases efficiency. READ MORE

6. 4. Optimal Control and Model Reduction of Nonlinear DAE Models

   Author : Johan Sjöberg; Torkel Glad; Xiaoming Hu; Linköpings universitet; []
   Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; DAE Models; Optimal Control; Model Reduction; Automatic control; Reglerteknik;

   Abstract : In this thesis, different topics for models that consist of both differential and algebraic equations are studied. The interest in such models, denoted DAE models, have increased substantially during the last years. READ MORE

7. 5. Teaching and learning of chemical bonding models : Aspects of textbooks, students’ understanding and teachers’ professional knowledge

   Author : Anna Bergqvist; Shu-Nu Chang Rundgren; Pernilla Nilsson; Ingo Eilks; Karlstads universitet; []
   Keywords : NATURAL SCIENCES; NATURVETENSKAP; Chemical bonding models; Pedagogical content knowledge; Teachers professional development; Chemistry education; Students learning; Kemi; Chemistry;

   Abstract : Despite the growing importance of science and technology in society, school students consider these subjects irrelevant and hard to learn. Teachers must therefore know how to teach science in ways that enhance students’ understanding and interest. READ MORE