834
eng
doctoralthesis
0
2005-02-16
2005-02-16
--
Rapid Mathematical Programming
The thesis deals with the implementation and application of out-of-the-box tools in linear and mixed integer programming. It documents the lessons learned and conclusions drawn from five years of implementing, maintaining, extending, and using several computer codes to solve real-life industrial problems. By means of several examples it is demonstrated how to apply algebraic modeling languages to rapidly devise mathematical models of real-world problems. It is shown that today's MIP solvers are capable of solving the resulting mixed integer programs, leading to an approach that delivers results very quickly. Even though, problems are tackled that not long ago required the implementation of specialized branch-and-cut algorithms. In the first part of the thesis the modeling language Zimpl is introduced. Chapter 2 contains a complete description of the language. In the subsequent chapter details of the implementation are described. Both theoretical and practical considerations are discussed. Aspects of software engineering, error prevention, and detection are addressed. In the second part several real-world projects are examined that employed the methodology and the tools developed in the first part. Chapter 4 presents three projects from the telecommunication industry dealing with facility location problems. Chapter 5 characterizes questions that arise in UMTS planning. Problems, models, and solutions are discussed. Special emphasis is put on the dependency of the precision of the input data and the results. Possible reasons for unexpected and undesirable solutions are explained. Finally, the Steiner tree packing problem in graphs, a well-known hard combinatorial problem, is revisited. A formerly known, but not yet used model is applied to combine switchbox wire routing and via minimization. All instances known from the literature are solved by this approach, as are some newly generated bigger problem instances.
04-58
834
urn:nbn:de:0297-zib-8346
Thorsten Koch
ZIB-Report
04-58
eng
uncontrolled
Modelling Languages
eng
uncontrolled
Mixed Integer Programming
eng
uncontrolled
Steiner Tree Packing in Graphs
eng
uncontrolled
Location Planning in Telecommunications
eng
uncontrolled
UMTS
Informatik, Informationswissenschaft, allgemeine Werke
Other programming techniques (object-oriented, sequential, concurrent, automatic, etc.)
Communication networks [See also 68M10, 94A05]
Mixed integer programming
Combinatorial optimization
Applications of mathematical programming
Dissertationen
ZIB Allgemein
Koch, Thorsten
Technische Universität Berlin
https://opus4.kobv.de/opus4-zib/files/834/ZR-04-58.pdf