Dr. Stephan Bütikofer

Dr. Stephan Bütikofer

Dr. Stephan Bütikofer
ZHAW School of Engineering
Rosenstrasse 3
8400 Winterthur

+41 (0) 58 934 67 35
stephan.buetikofer@zhaw.ch

Persönliches Profil

Tätigkeit an der ZHAW als

- Lecturer of Operations Management and Mathematics
- Senior research scientist

Arbeits- und Forschungsschwerpunkte, Spezialkenntnisse

Continuous Optimization, theory and methods

In particular:
Nonsmooth analysis and methods applied to optimization, variational and equilibrium problems (including local and global convergence analysis of Newton-type and penalty methods, computer implementation and testing of algorithms).

Aus- und Fortbildung

Dr. sc. ETH, Dissertation, ETH Zürich
Dipl. math., Studies in mathematics, University of Basel

Beruflicher Werdegang

Referee’s report for:
SIAM Journal on Optimization, Numerische Mathematik, Optimization, Operations Research Proceedings 2010

Lecturer at the University of Applied Sciences Switzerland for Distance Studies (since 2008)

Assistant lecturer at the University of Zurich (since 2009)

Mitglied in Netzwerken

Projekte

Projektleitung

Mitarbeit an folgenden Projekten

Publikationen

Monographien und Herausgeberschaften

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Generalized Newton type methods for nonsmooth equations in optimization and complemenatarity problems

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DISS. ETH No. 18069. Zurich, Switzerland: ETH Zurich.

Beiträge, peer-reviewed

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Extension and application of a general pickup and delivery model for evaluating the impact of bundling goods in an urban environment

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In: Operations Research Proceedings. Operations Research Proceedings 2014 Berlin: Springer. Peer reviewed.

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Generation of Interactive Questionnaires Using YAWL-based Workflow Models

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Management Studies, 3, 11-12. 273-280. Peer reviewed.

Beiträge, nicht peer-reviewed

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Kooperationsplattform für die urbane Güterlogistik

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Schlussbericht

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Kooperieren? Ja! Aber wie?

: Chancen und Herausforderungen bei der Entwicklung einer Kooperationsplattform für urbane Güterlogistik in der Stadt Zürich.

Logistics Innovation, 1 18-21.

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Optimised Employee Deployment Planning - The Example of the Gotthard Base Tunnel

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In: 5th Customer Value Network Event for Rail Asset Management. (18 February 2015). Walldorf, Deutschland: SAP, Orianda , Utopia.

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Customers as Investment Objects – a New Perspective on Marketing

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In: Proc. 2014 Science-to-Business in Marketing Conference. Winterthur: ZHAW.

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A nonsmooth Newton method with path search and its use in solving C^{1,1} programs and semi-infinite problems

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SIOPT, 20, (2010) 2381-2412.

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Influence of inexact solutions in a lower level problem on the convergence behavior of a nonsmooth Newton method

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In: Technical report of the University of Applied Sciences Zurich. Winterthur, Switzerland: ZHAW.

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Influence of inexact solutions in a lower level problem on the convergence behaviour of a nonsmooth Newton method

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In: OR 2010. München, Germany: Universität der Bundeswehr München.

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On second-order Taylor expansion of critical values

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Kybernetika , 46, (2010) 472-487.

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A nonsmooth Newton method with path search and its use for solving (generalized) semi-infinite programs

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In: Forschungsseminar Optimierung, Humboldt University Berlin. Berlin: Humboldt University Berlin.

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A nonsmooth Newton method with path search and its use for solving (generalized) semi-infinite programs

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In: Euro 2009 (Bonn, Germany) and Workshop Europt 2009 (Remagen, Germany). Remagen, Germany: IFORS.

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Nichtglatte Newtonverfahren in der semi-infiniten Optimierung

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In: Workshop Parametrische Optimierung und Anwendungen, University of Zurich. Zürich, Schweiz: Universität Zürich.

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Generalized Newton-type methods for nonsmooth equations in optimization and complementarity problems

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In: Optimization and Applications Seminar, ETH Zurich. Zurich, Switzerland: University of Zurich.

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Globalizing a nonsmooth Newton method via nonmonotone path search

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Mathematical Methods of Operations Research, 68 No.2, (2008). 235 - 256.