Search for dissertations about: "Conjugacy"
Showing result 1 - 5 of 10 swedish dissertations containing the word Conjugacy.
-
1. Sequential Monte Carlo methods for conjugate state-space models
Abstract : Bayesian inference in state-space models requires the solution of high-dimensional integrals, which is intractable in general. A viable alternative is to use sample-based methods, like sequential Monte Carlo, but this introduces variance into the inferred quantities that can sometimes render the estimates useless. READ MORE
-
2. Exploiting conjugacy in state-space models with sequential Monte Carlo
Abstract : Many processes we encounter in our daily lives are dynamical systems that can be described mathematically using state-space models. Exact inference of both states and parameters in these models is, in general, intractable. READ MORE
-
3. The k-assignment polytope, phylogenetic trees, and permutation patterns
Abstract : In this thesis three combinatorial problems are studied in four papers.In Paper 1 we study the structure of the k-assignment polytope, whose vertices are the mxn (0,1)-matrices with exactly k 1:s and at most one 1 in each row and each column. READ MORE
-
4. Generalised Ramsey numbers and Bruhat order on involutions
Abstract : This thesis consists of two papers within two different areas of combinatorics.Ramsey theory is a classic topic in graph theory, and Paper A deals with two of its most fundamental problems: to compute Ramsey numbers and to characterise critical graphs. More precisely, we study generalised Ramsey numbers for two sets Γ1 and Γ2 of cycles. READ MORE
-
5. Computing abelian varieties over finite fields
Abstract : In this thesis we address the problem of developing effective algorithms to compute isomorphism classes of polarized abelian varieties over a finite field and of fractional ideals of an order in a finite product of number fields.There are well-known methods to efficiently compute the classes of invertible ideals of an order in a number field, but not much has previously been known about non-invertible ideals. READ MORE