Sökning: "geometric data analysis"
Visar resultat 11 - 15 av 97 avhandlingar innehållade orden geometric data analysis.
11. Tame representations in Topological Data Analysis: decompositions, invariants and metrics
Sammanfattning : This thesis is a compilation of results that can be framed within the field of applied topology. The starting point of our study is objects presenting a possibly complex intrinsic geometry. The main goal is then to simplify, without trivializing, the geometric information characterising these objects by choosing an appropriate representation. LÄS MER
12. Complex Cavity Analysis : Analytical Fluid-Power Models Using CAD Information
Sammanfattning : This thesis covers different methods of topology search for making time-domain simulation models based on geometric information. The application is in the field of fluid-power. Automatic methods for extracting simulation models from CAD data are presented. LÄS MER
13. Subspace Computations via Matrix Decompositions and Geometric Optimization
Sammanfattning : This thesis is concerned with the computation of certain subspaces connected to a given matrix, where the closely related problem of approximating the matrix with one of lower rank is given special attention. To determine the rank and obtain bases for fundamental subspaces such as the range and null space of a matrix, computing the singular value decomposition (SVD) is the standard method. LÄS MER
14. From Art Galleries to Terrain Modelling --- A Meandering Path through Computational Geometry
Sammanfattning : We give approximation and online algorithms as well as data structures for some well studied problems in computational geometry. The thesis is divided into three parts. In part one, we study problems related to guarding, exploring and searching geometric environments. LÄS MER
15. Fixed-Parameter Algorithms for Optimal Convex Partitions and Other Results
Sammanfattning : In this thesis I study two-dimensional geometric optimization problems for which it is difficult to find efficient, exact, deterministic algorithms. All known solutions to these problems require time that is exponential in the total size of the input. LÄS MER