Sökning: "heavy-tailed distributions"

Visar resultat 1 - 5 av 15 avhandlingar innehållade orden heavy-tailed distributions.

1. 1. Modeling Organizational Dynamics : Distributions, Networks, Sequences and Mechanisms

   Författare :Hernan Mondani; Fredrik Liljeros; Rickard Sandell; Stockholms universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; organizational dynamics; social organizing; organizational change; modeling; organizational growth; process stability; labor flow network; employment trajectories; heavy-tailed distributions; complex network analysis; sequence analysis; agent-based modeling; sociophysics; Sociology; sociologi;

   Sammanfattning : The study of how social organizations work, change and develop is central to sociology and to our understanding of the social world and its transformations. At the same time, the underlying principles of organizational dynamics are extremely difficult to investigate. LÄS MER

3. 2. A semiparametric estimator of the mean of heavy-tailed distributions

   Författare :Joachim Johansson; Göteborgs universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : .... LÄS MER

4. 3. Kalman Filters for Nonlinear Systems and Heavy-Tailed Noise

   Författare :Michael Roth; Fredrik Gustafsson; Simo Särkkä; Linköpings universitet; []
   Nyckelord :;

   Sammanfattning : This thesis is on filtering in state space models. First, we examine approximate Kalman filters for nonlinear systems, where the optimal Bayesian filtering recursions cannot be solved exactly. These algorithms rely on the computation of certain expected values. LÄS MER

5. 4. Moment Estimation Using Extreme Value Methods

   Författare :Joachim Johansson; Göteborgs universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Pareto distribution; mean estimation; heavy tailed distributions; telecommunication; m -dependence; superpopulation sampling; peaks over threshold; telecommunication;

   Sammanfattning : The thesis is composed of three papers, all dealing with the application of extreme value methods to the problem of moment estimation for heavy-tailed distributions. In Paper A, an asymptotically normally distributed estimate for the expected value of a positive random variable with infinite variance is introduced. LÄS MER

7. 5. The Principle of Scaling of Geographic Space and its Application in Urban Studies

   Författare :Xintao Liu; Bin Jiang; Yifang Ban; Meng Liqiu; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; geographic space; scaling; GIScience; VGI; OSM; heavy-tailed distribution; the head tail division rule; space syntax; nature street; urban sprawl; floating car data; hierarchical spatial structure;

   Sammanfattning : Geographic space is the large-scale and continuous space that encircles the earth and in which human activities occur. The study of geographic space has drawn attention in many different fields and has been applied in a variety of studies, including those on cognition, urban planning and navigation systems. LÄS MER