Avancerad sökning

Hittade 2 avhandlingar som matchar ovanstående sökkriterier.

1. 1. Perfect simulation of some spatial point processes

   Författare :Kajsa Larson; Olle Häggström; Chalmers University of Technology and Göteborg University Department of Mathematical Statistics; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Perfect simulering; coupling from the past; Markov shain Monte Carlo; point process; Widom-Rowlinson model; Mathematical statistics; Matematisk statistik; Mathematical Statistics; matematisk statistik;

   Sammanfattning : Coupling from the past (CFTP) algorithms are presented that generate perfectly distributed samples from the multi-type Widom--Rowlinson (W--R) model and some generalizations of it. The classical W--R model is a point process in the plane or the  space consisting of points of several different types. LÄS MER

3. 2. On perfect simulation and EM estimation

   Författare :Kajsa Larson; Sara Sjöstedt de Luna; Mats Rudemo; Umeå universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Perfect simulation; coupling from the past; Markov chain Monte Carlo; point process; Widom-Rowlinson model; EM algorithm; dispersal distribution; fecundity; first-passage percolation; Mathematical statistics; Matematisk statistik; Mathematical Statistics; matematisk statistik;

   Sammanfattning : Perfect simulation  and the EM algorithm are the main topics in this thesis. In paper I, we present coupling from the past (CFTP) algorithms that generate perfectly distributed samples from the multi-type Widom--Rowlin-son (W--R) model and some generalizations of it. LÄS MER