PhD Researcher – B-spline based relaxations for robust optimization

(Ref. BAP-2014-553)

Occupation : Full-time
Period : Fixed-term contract
Place : Leuven
Apply no later than : March 31, 2015

The KU Leuven, Department of Mechanical Engineering is searching for a young, motivated and skilled PhD researcher with a strong background in numerical optimization, systems theory and control.

B-spline based relaxations for robust optimization

Project

While many engineering problems are nowadays translated into a numerical optimization problem, the associated numerical data are often inaccurate or uncertain. As this uncertainty of data may turn the numerical optimum into a poor or even unacceptable solution for the true problem, there is a great push for robust optimization techniques suited for engineering applications. Robust optimization seeks a solution that is feasible and most optimal for all possible values of the numerical data. As the data is generally considered to vary in infinite sets (e.g. a real interval), robust optimization problems are numerically intractable in general. Therefore most problems are currently relaxed to a tractable problem by relying on either Pólya’s theorem or sum-of-squares certificates of positivity. As these approaches suffer from limited applicability or high computational load, we recently initiated novel relaxation schemes based on B-splines, i.e. particular piecewise polynomial basis functions, and their properties. Within this research project you will develop the initial results into a general methodology for constructing B-spline based relaxations of robust optimization problems. In addition to the theoretical research this involves, you will develop a software toolbox for efficient spline manipulations and optimization, and validate the methodology on robust optimization applications such as robust control and motion planning in obstructed environments. The research will be carried out in the MECO research group at the division PMA of the department of Mechanical Engineering, KU Leuven, Leuven, Belgium.

Profile

An ideal candidate holds a degree in engineering or applied mathematics.He or she has a solid background in numerical optimization, systems theory and control, a strong interest and experience in mathematical programming (Matlab,Python, C/C++), and enthusiasm for scientific research. Proficiency in English is a requirement and applicants whose mother tongue is neither Dutch nor English must present an official language test report. Acceptable tests are TOEFL and Academic IELTS, for which the required minimum scores are:

  • TOEFL: 610 (paper-based test), 102 (internet-based test)
  • IELTS: 7.5 (only Academic IELTS test accepted)

Offer

A fully funded PhD position for four years; a start date in course of 2015 is to be agreed upon.

Interested?

To apply, send an email to goele.pipeleers<στο>kuleuven.be with subject “Bspline PhD application”, or use the online application tool.
Include:
– an academic CV
– a pdf of your diplomas and transcript of course work and grades
– statement of research interests and career goals
– sample of technical writing
– list of at least two referees: names and email addresses
– proof of English language proficiency test results.

 

You can apply for this job no later than March 31, 2015 via the online application tool