On this site you can find information on former employees of the institute and links to their current profiles.
Dr. Adriana Moros Daza
From 2017 until 2019, Dr. Adriana Moros Daza was our external PhD student within the Dual Degree Program with Universidad del Norte in Barranquilla, Colombia and now is a lecturer at that same university.
optimization of port logistics, supply chain management, optimization, simulation and collaboration in foreign trade chains
Dr. Moros is currently linked to the department of industrial engineering of the Universidad del Norte. She holds an industrial engineering degree and a master's degree in industrial engineering, both awarded by the Universidad del Norte. Ms. Moros has participated in joint projects with the university for the Colombian Caribbean region, as is the case with the LOGPORT project.
Prof. Dr. Eduardo Lalla-Ruiz
From 2017 until 2019 Prof. Dr. Eduardo Lalla-Ruiz was a Alexander-von-Humboldt fellow at the IWI and now is assistant professor at the University of Twente, the Netherlands.
- Informationsmanagement im Verkehr (in English)
- extraordinary doctoral award for the best Phd thesis in 2016 by the University of La Laguna (Teneriffe)
Prof. Dr. Lalla-Ruiz was a Von-Humboldt-fellowship-funded Post-Doc researcher at our institute from 2017 until 2018. He is currently Assistant Professor at the University of Twente.
Dr. Yingjie Fan
Currently, Yingjie Fan is an Assistant Professor at the University of Leiden, Netherlands. From 2012 until June 2017 she was an external phd student at the IWI.
Supply Chain Management, Supply Chain Risk Management, Metaheuristics, Simulation-Based Optimization, Multi-Agent-Systems, Production Management, Warehouse Management, Logistics
Yingjie Fan, Frank Schwartz, Stefan Voß. Flexible supply chain design under stochastic catastrophic risks. The 9th Hamburg International Conference of Logistics 2014 (HICL), 2014.
Yingjie Fan, Jiangtao Mo. Study on backorder allowed single-manufacturer multi-retailer coordination strategy. Logistics Technology, 2010 (20) 79-82. (in Chinese)
Yingjie Fan. Study on the joint decision-making within a multi-echelon supply chain with invariant demand. Logistics Technology, 2010 (16) 124-126. (in Chinese)
Zengxin Wei, Yingjie Fan, Jiangtao Mo. Research on the decision-making problem of the producer and the retailer on the supply chain. Microcomputer Information, 2008 (15) 24-25. (in Chinese)
Awards and Honours:
scholarship from China Scholarship Council (CSC) for the doctoral degree studies from Oct. 2012 to Sep. 2016.
|since Oct. 2012||Phd-studies at the Institute of Information Systems at UHH|
|Sept. 2009 - Okt. 2012|| lecturer at Management College, Xuzhou Institute for Technology. Lecture: "Purchasing and Warehousing", "International Trade", "Supply Chain Logistics Management", "E-Commerce- and Logistics-Management", "E-Commerce-and ERP-Basics" and "West Economics"
|Jul. 2008 - Aug.2009||Marketing Assistant, China Merchants Logistics Holding Co., Ltd
Responsibilities: marketing investigation, decision support
|Sept. 2005 - Jul. 2008||Postgraduate studies in College of Electrical Engineering, Guangxi University|
|Undergraduate studies in School of Management, China University of Mining and Technology|
Dr. Silvia Schwarze
From 2007 until 2017 Dr. Silvia Schwarze was a post-Doc and research associate at the IWI.
- Operative processes at container terminals
- Impact of digital transformation on processes at seaports
- Freight transport planning, tour planning, in particular under vehicle skills
- Planning in public transport, lineplanning
- Network design in telecommunication networks, in particular for fiber networks and content delivery networks
- Game Theory
- Multiagent systems and supply chain management
S. Schwarze: Pricing Strategies for the Site-Dependent Vehicle Routing Problem. OR Spectrum 38(1), pp. 137-173, 2016.
D. Meignan, S. Schwarze, S. Voß: Improving Local-search Metaheuristics through Look-ahead Policies. Annals of Mathematics and Artificial Intelligence 76, pp. 59-82. 2016.
E. Zehendner, M. Caserta, D. Feillet, S. Schwarze, S. Voß: An Improved Mathematical Formulation for the Blocks Relocation Problem. European Journal of Operational Research 245, pp. 415-422, 2015.
S. Schwarze, S. Voß: Interaction of Maritime Shipping and Hinterland Traffic Using a Two-level
Hierarchical Transport Network. International Journal of Logistics Research and Applications 18(3), pp. 276-290, 2015
A. Schöbel, S. Schwarze: Finding Delay-Resistant Line Concepts using a Game-Theoretic Approach. Netnomics, 14(3), pp. 95-117, 2013
S. Schwarze, S. Voß: Improved Load Balancing and Resource Utilization for the Skill Vehicle Routing Problem. Optimization Letters, 7(8), pp. 1805-1823, 2013
M. Fricke, A. Heckwolf, R. Herber, R. Nitsch, S. Schwarze, S. Voß, S. Wevering: Requirements of 4G-Based Mobile Broadband on Future Transport Networks [PDF]. Journal of Telecommunications and Information Technology, 2/2012, pp. 21 - 28. 2012
M. Caserta, S. Schwarze, S. Voß: Developing a Ring-Based Optical Network Structure with Glass-Through Nodes. Journal of Telecommunications and Information Technology [PDF], 2/2012, pp. 13 - 20. 2012
M. Caserta, S. Schwarze, S. Voß: A mathematical formulation and complexity considerations for the blocks relocation problem. European Journal of Operational Research, 219(1), pp. 96-104, 2012
S. Voß, S. Schwarze: LTE und LTE-A: Mobilfunk der vierten Generation, WISU, Das Wirtschaftsstudium, 5/12, pp. 689 - 692, 2012
S. Schwarze, M. Caserta, S. Voß: Die Kunst des Stapelns – Eine Einführung in das Blocksortierproblem, WiSt, Wirtschaftswissenschaftliches Studium, Vol. 39 (12), pp. 576 - 581, 2010.
I. Montalvo, J. Izquierdo, S. Schwarze, R. Pérez-García: Multi-objective particle swarm optimization applied to water distribution systems design: An approach with human interaction, Mathematical and Computer Modelling 52 pp. 1219-1227, 2010
J. Puerto, A. Schöbel, S. Schwarze: The path player game: A network game from the point of view of the network providers, Mathematical Methods of Operations Research, 68(1), pp. 1-20, 2008
Book Chapters and Conference Proceeding Contributions:
L. Heilig, S. Schwarze, S. Voß: An Analysis of Digital Transformation in the History and Future of Modern Ports. In: Proceedings of the 50th Hawaii International Conference on System Sciences (HICCS'2017) pp 1341-1350 (2017)
E. Lalla-Ruiz, S. Schwarze, S. Voß: A Matheuristic Approach for the p-Cable Trench Problem. In: Festa P., Sellmann M., Vanschoren J. (eds) Learning and Intelligent Optimization. LION 2016. Lecture Notes in Computer Science, vol 10079. Springer, pp 247-252 (2016)
S. Schwarze: The multi-commodity cable trench problem. Twenty-Third European Conference on Information Systems (ECIS 2015) Completed Research Papers. Paper 165. (2015)
S. Schwarze, S. Voß: A bicriteria skill vehicle routing problem with time windows and an application to pushback operations at airports. In: J. Dethloff, H.-D. Haasis, H. Kopfer, H. Kotzab, J. Schönberger (eds.) Logistics Management, Lecture Notes in Logistics, Springer, pp. 289-300 (2015)
D. Meignan, S. Schwarze, S. Voß: Two look-ahead strategies for local-search metaheuristics. In: P.M. Pardalos, M.G.C. Resende, C. Vogiatzis, J.L. Walteros (eds.) Learning and Intelligent Optimization, LNCS 8426, Springer, pp.187-202 (2014)
S. Schwarze, S. Voß: Look Ahead Hyper Heuristics, In: A. Fink, M.J. Geiger (eds): Proceedings of the 14th EU/ME Workshop, pages 91-97. (2013)
S. Schwarze, S. Voß, G. Zhou, G. Zhou: Scientometric Analysis of Container Terminals and Ports Literature and Interaction with Publications on Distribution Networks, In: H. Hu, X. Shi, R. Stahlbock,
S. Voß (eds): Computational Logistics, volume 7555 of Lecture Notes in Computer Science, pages 33-52. Springer, Berlin (2012).
I. Montalvo, J. Izquierdo, S. Schwarze, R. Pérez-García: Agent swarm optimization, a novel approach in swarm intelligence, In: S. Mambretti, C.A. Brebbia (eds): Urban Water, WIT Transactions on The Buildt Environment, Vol. 122, pp. 35-47, WIT Press (2012)
S. Schwarze: Einführung in die Spieltheorie, In: A. Schöbel, D. Scholz (eds): Evolution und Epidemie.
Spieltheorie in der Biophysik, pp. 3-16, Shaker (2011)
M. Caserta, S. Schwarze, S. Voß: Container Rehandling at Maritime Container Terminals, In: J.W. Böse (ed): Handbook of Terminal Planning, Operations Research/Computer Science Interfaces Series, Vol. 49, pp. 247-269, Springer (2011)
I. Montalvo, J. Izquierdo, S. Schwarze, R. Pérez-García: Agent Swarm Optimization: a paradigm to tackle complex problems. Application to Water Distribution System Design, In: D.A. Swayne, W. Yang, A.A. Voinov, A. Rizzoli, T. Filatova (Eds.) Proc. of the iEMSs 2010
M. Caserta, S. Schwarze, S. Voß: A New Binary Description of the Blocks Relocation Problem and Benefits in a Look Ahead Heuristic, In: Cotta, C. and Cowling P., editors, Evolutionary Computation in Combinatorial Optimization, volume 5482 of Lecture Notes in Computer Science, pages 37-48. Springer, Berlin (2009)
M. Caserta, A. Fink, A. Raiconi, S. Schwarze, S. Voss: Mathematical Formulations and Metaheuristics Comparison for the Push-Tree Problem. In: J.W. Chinneck, B. Kristjansson and M. Saltzman (eds.) Operations Research and Cyber-infrastructure, Springer, New York (2009), 253 - 278
A. Schöbel, S. Schwarze: Dominance and equilibria in the path player game, In: Operations Research
Proceedings 2005, pages 489 - 494, Springer 2006
J. Puerto, A. Schöbel, S. Schwarze: A class of infinite potential games, Preprint des Instituts für Numerische und Angewandte Mathematik, Nr. 2006-15
A. Schöbel, S. Schwarze: A game-theoretic approach to line planning, In: Proc. of ATMOS 2006 - 6th Workshop on Algorithmic Methods and Models for Optimization of Railways, 2006
S. Voß, J. Pahl, S. Schwarze (eds.): Logistik Management: Systeme, Methoden, Integration, Physica Verlag, Heidelberg (2009)
S. Schwarze: Path Player Games: Analysis and Applications, Springer, 2008
W. Hamacher, E. Korn, R. Korn, S. Schwarze: Mathe und Ökonomie, Universum Verlag, 2004
|12/15-7/17||ROAD (Rollierende automatische Lkw-Disposition mit vorausschauendem Störungsmanagement) in Co-operation with Initions AG,Hamburg,
funded by the Hamburgische Investitions- und Förderbank (IFB)
contents: development of a disruption management system (disruption detection, impacts of disruptions, evaluation, autonomous re-planning)
|06/11-02/12||4G-based mobile networks (University of Hamburg, in co-operation with Deutsche Telekom and TK Systems, Darmstadt and Nokia Siemens Networks, Munich)
Requirement analysis of modern 4G-based mobile networks.
|08/08-07/09||ring structures in fiber-optic networks (University of Hamburg, in co-operation with Deutsche Telekom and TK Systems, Darmstadt)
design of fiber-optic networks, comparison of ring- and mesh-based networks.
|04/05-12/07||Algorithms for Robust and online Railway optimization: Improving the Validity and reliAbility of Large scale systems (ARRIVAL) (University of Göttingen), funded by the European Union within the Future and Emerging Technologies program|
|10/01-03/05||Management Mathematics for European Schools (MaMaEuSch). TU Kaiserslautern,
creating learning materials, concept, organization, and execution of teacher trainings and school activities.
funded by the European Union within the Sokrates program
|10/01-03/05||economic and technical mathematics in school (WiMS/TeMS), (University of Kaiserslautern). funded by the Ministry of Science, Continuing Education, Research and Culture, Rheinland-Pfalz and the Volkswagen foundation|
Mathematics and Economics. TU Kaiserslautern,
Awards and Honours:
|1999 - 2001||Scholarship, Siemens AG|
|1995 -1998||Talent program "Berufliche Bildung" by the Bundesland Bayern|
Rolex-price, Hans-Wilsdorf-Schule, Kulmbach
|since 12/2015||Researcher, Third-party funding project ROAD. Cooperation with company Initions and Institute of Information Systems, University of Hamburg|
|01/2016||Venia Legendi for "Betriebswirtschaftslehre" Faculty of Business Administration, University of Hamburg|
|12/2015||Habilitation, Faculty of Business Administration, University of Hamburg|
|2008-12/2015||Researcher, Institute of Information Systems, University of Hamburg|
|06/2006||PhD (Dr. rer. nat) Institute for Numerical and Applied Mathematics, University of Göttingen|
|2005 - 2007||Researcher, Institute for Numerical and Applied Mathematics, University of Göttingen|
|2002 - 2005||Researcher, Optimization Group, Department of Mathematics, TU Kaiserslautern|
|1997 - 2002||Studies of Business Mathematics (HTWK Leipzig)|
Non-Academic Work Experience
|2000||Internship, Department Production Planning and Control, Quelle AG, Leipzig|
|1998 - 1995||Working student, Department Automation and Drives, Siemens AG, Leipzig|
|1995 - 1997||Off-the-job training "Betriebsinformatiker" (HWK)|
|1995 - 1997||IT-Support (Raps & Co., Kulmbach)|
|1993 - 1995||Apprenticeship industrial clerk (Raps & Co., Kulmbach)|
Teaching at UHH:
- Datenerhebung & Statistik (SuTerm16)
- Project Management (WiTerm13/14)
- Production for Engineers (WiTerm13/14)
- Production for Engineers (SuTerm13)
- Advanced Production Planning (WiTerm 9/10)
- Production (SuTerm09)
- Multiagent Systems (WiTerm 08/09)
- Game Theory (WiTerm 06/07)
- Multi-Criteria Optimization (SuTerm06)
Seminars and Tutorials:
- tutorial: Introduction to Information Systems (WiTerm12/13)
- introductory seminar: Telecommunications (WiTerm12/13)
- tutorial: Production (SuTerm12)
- tutorial: Introduction to Information Systems (WiTerm11/12)
- introductory seminar: Optimization Problems in Telecommunications (WiTerm11/12)
- seminar: Production (WiTerm09/10)
- tutorial: Production Planning (SuTerm08) mit Prof. Voß
- Oberseminar Optimization (SuTerm06 - WiTerm 06/07) with Prof. A. Schöbel
- seminar: Location Planning (WiTerm 05/06) with Prof. A. Schöbel
- seminar: Weight Distribution in Networks (SuTerm05) mit Prof. A. Schöbel
- introductory seminar: Game Theory (SuTerm04) with Prof. H.W. Hamacher
- tutorial:Optimization II: Nonlinear Optimization and Game Theory (SuTerm03)
- introductory seminar: Mathematical Modelling (WiTerm 02/03) with Dr. Bracke
- Management Mathematics for European School Teacher Meeting (Sept. 2004, Lambrecht)
- Anwendungen der Wirtschaftsmathematik und deren Einsatz im Schulunterricht (June 2004, Speyer)
- Produktionsplanung und lineare Optimierung (Nov. 2003, Düsseldorf)
- Lineare Optimierung in Wirtschaft und Schule (Oct. 2002, Kaiserslautern)
Prof. Dr. Julia Pahl
Prof. Dr. Julia Pahl is working as an Associate Professor at University of Southern Denmark at the Department of Technology and Innovation at SDU Engineering Operations Management. From 2008 until 2013 she was employed as a research assistant at the IWI.
Supply Chain Management, Lead Time Management, Load Dependent Lead Times, Tactical Production Planning, Modelling of Deterioration/Perishability, Network Planning, Green Supply Chain Management (GSCM), Airline and Airport Management.
J. Pahl. Production Planning with Load Dependent Lead Times and Sustainability Aspects (EDISS). Universität Hamburg. (Link)
J. Pahl, S. Voß, and D.L. Woodruff. Production planning with load dependent lead times. 4OR: A Quarterly Journal of Operations Research, 3(4):257–302, 2005 (Link: Springerlink)
J. Pahl, S. Voß, and D.L. Woodruff. Production planning with load dependent lead times: An update of research. Annals of Operations Research, 153(1):297-345, 2007 (Link: Springerlink)
A. Mies, J. Pahl, S. Voß. Supply Chain Integration: Improvements of Global Lead Times with SCEM in: J. Geldermann, M. Treitz, H. Schollenberger, O. Rentz (Eds.) Challenges for Industrial Production, Workshop of the PepOn Project: Integrated Process Design for Inter-Enterprise Plant Layout Planning of Dynamic Mass Flow Networks, Karlsruhe, Nov. 7-8. 2005 (Link: Book Overview)
J. Pahl, S. Voß, D.L. Woodruff. Production Planning with deterioration constraints: A survey. In: J.A. Ceroni (ed.) The Development of Collaborative Production and Service Systems in Emergent Economies, Proceedings of the 19th International Conference on Production Research, IFPR , Valparaiso, Chile (2007), Tu3. 6-2, 6 pages [ISBN: 978-956-310-751-7] (Link: ICPR19)
J. Pahl, S. Voß. Discrete Lot-Sizing and Scheduling Including Deterioration and Perishability Constraints. In: W. Danglmainer and A. Blecken and R. Delius and S. Klöpfer (ed.) Advanced Manufacturing and Sustainable Logistics, Proceedings of the 8th International Heinz Nixdorf Symposium, IHNS 2010, Paderborn 2010 (Link: Springerlink)
J. Pahl, S. Voß, D.L. Woodruff. Discrete Lot-Sizing and Scheduling with Sequence-Dependent Setup Times and Costs including Deterioration and Perishability Constraints, IEEE, HICSS-44, January 2011.
(Testinstanzen und Performance [19MB!])
T. Reiners, J. Pahl, M. Maroszek, C. Rettig. Integrated Aircraft Scheduling Problem: An Auto-Adapting Algorithm to Find Robust Aircraft Assignments for Large Flight Plans, IEEE, HICSS-45, January 2012, (Quellcode, Testinstanzen, Visual Suite Software [27MB])
J. Pahl, S. Voß, and D.L. Woodruff. Load dependent lead times - from empirical evidence to mathematical modeling. In H. Kotzab, S. Seuring, M. Müller, and G. Reiner, editors, Research Methodologies in Supply Chain Management, 539–554. Physica, Heidelberg, 2005 (Link: Springerlink)
Technical Reports und Working Papers
M. Maroszek, C. Rettig. A Tabu Search for the p-Median Problem, Technical Report, Universität Hamburg, 27.03.2008 (Download technical report (PDF))
Member of the international editorial team of the International Journal of Operations Research and Information Systems (IJORIS).
International Research Projects with the University of Salerno, Italy
DAAD-PPP Vigoni Research Project "Sustainability and Green Supply Chain Planning - Network Flow Formulations and Solution Methods" in Cooperation with Universitá degli Studi di Salerno, Dipartimento di Informatica, Assistant Professor Monica Gentili, Fisciano/Italy
Awards and Distinctions
Young Graduate Traineeship der European Space Agency, VEGA Small Launcher Project
Research Grant for HICSS-44
Lectures and Courses
Study (Software) Project ( WiTerm 2008/09, SuTerm 2009, SuTerm 2010)
Assistence Lecture Information Management (WiTerm 2008/09)
Seminar of Information Systems / Information Systems (WiTerm 2008/09, WiTerm 2009/10)
Assistence Lecture Production (Produktion: SuTerm 2009)
Exercise in Information Management (WiTerm 2008/09)
Exercises in Production Planning (SuTerm 2009)
Exercises in Statistics II (SuTerm 2009)
Prof. Dr. Stefan Lessmann
From 2001 until 2014 Prof. Dr. Stefan Lessmann was a research assistant and lecturer at the IWI. Since 2014 he is a professor at the Humboldt University in Berlin.
I’m particularly interested in applications of computational methods to support managerial decision making, as well as modification and extension of such methods to increase their alignment with corporate requirements. Such endeavors are nowadays commonly referred to as data mining. Candidate applications include, e.g., estimating customers' likelihood of responding to direct-mail (response modeling), identifying customers at the risk of abandoning their relationship with a company (churn prediction), fraud detection, or assessing the risk associated with money lending (credit scoring).
Demand forecasting is another important application of quantitative decision support models and prediction models in particular. Any practical planning approach in, e.g., manufacturing or the wider scope of supply chain management is preconditioned on an accurate estimation of future demand. Therefore, it is an exciting exercise to explore the viability of demand forecasting for particular applications from computational, statistical and process-oriented perspectives, and study interactions between forecasting methodology and subsequent planning.
Predictive data mining methods can also be employed to aid software project management by identifying error prone software modules at an early stage within the development cycle. This may facilitate a more efficient allocation of constraint testing resources.
Finally, I developed a strong interest in studying the mechanisms of, and decision makers’ behavior in, speculative financial markets. Respective work aims at assessing the degree to which publicly available information is discounted in market prices. To foster a deeper understanding of this domain, a research collaboration with Prof. J.E.V. Johnson from the Centre of Risk Research, University of Southampton has been established. A popular approach to shed light on markets’ informational efficiency involves predictive modeling, which can thus be seen as the central theme embracing and unifying most of my research activities.
From a methodological perspective, I’m especially interested in support vector machines and ensemble approaches to solve general classification and regression problems. Furthermore, novel learning paradigms like active, transductive or strategic learning are an area I’m particularly excited about.
Publications (overview @ Google Scholar)
Monographs and editorial work
R. Stahlbock, S.F. Crone, S. Lessmann, (2009), Data Mining - Special Issue in Annals of Information Systems, Springer, Berlin. [ext. Link]
R. Stahlbock, S.F. Crone, S. Lessmann, G. M. Weiss, P. Lenca and W. Lippe (2009), Proceedings of the International Conference on Data Mining - DMIN'09, CSREA Press, Las Vegas.
R. Stahlbock, S.F. Crone, S. Lessmann, (2008), Proceedings of the International Conference on Data Mining - DMIN'08, CSREA Press, Las Vegas.
R. Stahlbock, S.F. Crone, S. Lessmann, (2007), Proceedings of the International Conference on Data Mining - DMIN'07, CSREA Press, Las Vegas. - ISBN 1-60132-004-3
S.F. Crone, S. Lessmann, R. Stahlbock (2006), Proceedings of the International Conference on Data Mining - DMIN'06, CSREA Press, Las Vegas. - ISBN 1-60132-031-0
Peer reviewed international journals
Brandner, H., Lessmann, S., & Voß, S. (2013). A memetic approach to construct transductive discrete support vector machines. European Journal of Operational Research, 230(3), pp. 581-595. [ext. link]
M.-C. Sung, S. Lessmann (2012), Save the Best for Last? The Treatment of Dominant Predictors in Financial Forecasting. Expert Systems With Applications 39(15), pp. 11898-11910 [ext. link]
S. Lessmann, M.-C. Sung, J.E.V. Johnson, T. Ma (2012), A new methodology for generating and combining statistical forecasting models to enhance competitive event prediction. European Journal of Operational Research 218(1), pp.163-174. [ext. link]
S. Lessmann, M. Caserta, I. Montalvo Arango (2011). Tuning metaheuristics: A data mining based approach for particle swarm optimization, Expert Systems With Applications 38(10), pp. 12826-12838. [ext. link]
S. Lessmann, M.-C. Sung, J.E.V. Johnson (2011), Towards a methodology for measuring the true degree of efficiency in a speculative market, Journal of the Operational Research Society 62, pp.2120-2132. [ext. link]
S. Lessmann, S. Voß (2010), Customer-centric decision support: A benchmarking study of novel versus established classification models, Business & Information Systems Engineering 2(2), pp. 79-93 [German version appears in Wirtschaftsinformatik]. [ext. link]
S. Lessmann, M.-C. Sung, J.E.V. Johnson (2010), Alternative methods of predicting competitive events: An application in horserace betting markets. International Journal of Forecasting 26(3), pp. 518-536. [ext. link]
R. Stahlbock, S. F. Crone, S. Lessmann (2009), Data Mining and Information Systems: Quo Vadis?, Annals of Information Systems 8, pp. 1-15. [ext. link]
S. Lessmann, S. Voß (2009), A framework for customer-centric data mining with support vector machines, European Journal of Operational Research 199(2), pp. 520-530. [ext. link]
S. Lessmann, M.-C. Sung, J.E.V. Johnson (2009), Identifying winners of competitive events: A SVM-based classification model for horserace prediction, European Journal of Operational Research 196(2), pp. 569-577. [ext. link]
S. Lessmann, B. Baesens, C. Mues, S. Pietsch (2008), Benchmarking classification models for software defect prediction: A proposed framework and novel findings, IEEE Transactions on Software Engineering 34(4), pp. 485-496. [ext. link]
S. Lessmann, M.-C. Sung, J.E.V. Johnson (2007), Adapting least-square support vector regression models to forecast the outcome of horseraces, Journal of Prediction Markets 1(3), pp. 169-187.
S. F. Crone, S. Lessmann, R. Stahlbock (2006), The impact of preprocessing on data mining: An evaluation of classifier sensitivity in direct marketing, European Journal of Operational Research 173(3), pp. 781-800. [ext. link]
Peer reviewed national journals
S. Lessmann, S. Voß (2010), Unterstützung kundenbezogener Entscheidungsprobleme: Eine Analyse zum Potenzial moderner Klassifikationsverfahren, Wirtschaftsinformatik 52(2), pp. 79-93. [ext. link]
S. Lessmann, S. Schüller, S. Voß (2009), Kostensensitive Klassifikation mit Random Forest, HMD - Praxis der Wirtschaftsinformatik 268, pp. 57-68.
S. Lessmann (2003), Customer Relationship Management, WISU 2, pp. 190-192.
Peer reviewed conference proceedings
H. Brandner, S. Lessmann, S. Voß (2011). Support of Managerial Decision Making by Transductive Learning. Proc. of the 10th Intern. Conf on Wirtschaftsinformatik (WI'11), Zurich, Switzerland.
S. Lessmann, M. Listiani and S. Voß (2010). Decision support in car leasing: A forecasting model for residual value estimation. In: M. Lacity, F. Niederman, S. March (Eds.) Proc. of the Intern. Conf. on Information Systems (ICIS’10), Saint Louis, MO, USA. [ext. link]
S. Lessmann, S. Voß (2009), Feature Selection in Marketing Applications. Proc. of the Intern. Conf on Advanced Data Mining and Applications (ADMA'09), Beijing, China. [ext. link]
S. Schüller, S. Lessmann, S. Voß (2009), A Case Study of Random Forest in Predictive Data Mining. Proc. of the Intern. Tagung Wirtschaftsinformatik (WI'09), Vienna, Austria.
M. Caserta, S. Lessmann, S. Voß (2009), A Novel Approach to Construct Discrete Support Vector Machine Classifiers. Proc. of the Anual Conf. of the German Classification Society (GFKL'09), Hamburg, Germany
N. Martin, S. Lessmann, S. Voß (2008), Crowdsourcing: Systematisierung praktischer Ausprägungen und verwandter Konzepte, Proc. of the 2008 Multi-Konferenz Wirtschaftsinformatik (MKWI'08), München, Germany [in German]
S. Lessmann, N. Li, S. Voß (2008), A Case Study of Core Vector Machines in Corporate Data Mining, Proc. of the 41th Hawaiian Intern. Conf. on System Science (HICSS'08), Hawaii, USA.
S. Lessmann, S. Voß (2006), Solving discrete support vector machines with tabu search, Proc. of the 2006 INFORMS Workshop on Artificial Intelligence and Data Mining, Pittsburgh, USA.
S. F. Crone, S. Lessmann, S. Pietsch (2006), Business Advantages with Computational Intelligence –An Investigation of Parameter Preselection for Support Vector Regression and Artificial Neural Networks applied on Time Series Forecasting, Proc. of the Intern. Conf. on Data Mining (DMIN'06), Las Vegas, Nevada, USA.
S. Lessmann, S. F. Crone, R. Stahlbock, N. Zacher (2006), An evaluation of support vector machines for cost-sensitive learning, Proc. of the Intern. Joint Conf. on Neural Networks (IJCNN'06), Vancouver, Canada.
S. Lessmann, R. Stahlbock, S. F. Crone (2006), Genetic algorithms for support vector machine model selection, Proc. of the Intern. Joint Conf. on Neural Networks (IJCNN'06), Vancouver, Canada.
S. F. Crone, S. Lessmann, S. Pietsch (2006), Forecasting with Computational Intelligence - An evaluation of support vector regression and artificial neural networks for time series prediction, Proc. of the Intern. Joint Conf. on Neural Networks (IJCNN'06), Vancouver, Canada.
S. F. Crone, S. Lessmann, R. Stahlbock (2005), Utility Based Data Mining for Time Series Analysis - Cost sensitive learning for Neural Network Predictors, Proc. of the 1st ACM SIGKDD Workshop on Utility based Data Mining (UBDM@KDD'05), Chicago, Illinois, USA.
S. Lessmann, R. Stahlbock, S. F. Crone (2005), Genetically constructed kernels for support vector machines. In Haasis, H.D., Kopfer, H., Schönberger, J. (Eds.): Operations Research Proceedings 2005, Springer, Berlin, pp. 257-262.
R. Stahlbock, S. F. Crone, S. Lessmann (2005) Evolutionary Neural Classification Approaches for Strategic and Operational Decision Support in Retail Store Planning, Proc. of the Intern. Conf. on Artificial Intelligence (IC-AI’05), Las Vegas, Nevada, USA.
S. Lessmann, R. Stahlbock, S. F. Crone (2005), Optimizing Hyperparameters of Support Vector Machines by Genetic Algorithms, Proc. of the Intern. Conf. on Artificial Intelligence (IC-AI’05), Las Vegas, Nevada, USA.
S. F. Crone, S. Lessmann, R. Stahlbock (2005) A New Perspective on Forecasting Seasonal Time Series with Artificial Neural Networks, Proc. of the Intern. Conf. on Artificial Intelligence (IC-AI’05), Las Vegas, Nevada, USA.
S. F. Crone, S. Lessmann, R. Stahlbock (2004), Empirical Comparison and Evaluation of classifier Performance for data mining in Customer Relationship Management. In: D.Wunsch et al. (eds.): Proc. of the Int. Joint Conf. on Neural Networks (IJCNN’04), 25.-29. July, Budapest, Hungary, IEEE, New York, pp. 443-448 [ext. link]
S. Lessmann (2004), Solving imbalanced classification Problems with Support Vector Machines, Proc. of the Intern. Conf. on Artificial Intelligence (IC-AI’04), Las Vegas, Nevada, USA.
Chapters in books
S. Lessmann, S. Voß (2008), Supervised Classification for Decision Support in Customer Relationship Management. In: Bortfeldt, A., Homberger, J., Kopfer, H., Pankratz, G., Stangmeier, R. (Eds): Intelligent Decision Support, Gabler, Wiesbaden, pp. 231-253.
D. B. Preßmar, S. Lessmann (2008), Wissensexploration mit der Support Vektor Maschine. In: Kortzfleisch, H. F. O., Bohl, O. (Eds): Wissens Vernetzung Virtualisierung. Josef Eul Verlag, Köln, pp. 187-197.
S. Lessmann, R. Stahlbock (2005), Support Vektor Klassifikatoren im analytischen Kundenbeziehungsmanagement. In: Rommelfanger, H. (Ed.): Neue Anwendungen von Fuzzy-Logik und Künstlicher Intelligenz. Shaker Verlag, Aachen, pp. 113-124.
S. F. Crone, S. Lessmann, R. Stahlbock (2005), Support Vector Machines versus Artificial Neural Networks - new potential in Data Mining for Customer Relationship Management? In: Wang, D., Lee, K. (Eds.): Neural Networks Applications in Information Technology and Web Engineering. Borneo Publishing, Malaysia, pp. 80-93.
J.E.V. Johnson, S. Lessmann, M.-C. Sung, (2007) A new Method for Predicting the Outcome of Speculative Events, Centre for Risk Research Working Paper CRR-07-03, University of Southampton.
S. Lessmann, S. Voß: Electronic Procurement (2005). In: Häberle, G. (Ed.): Lexikon der Betriebswirtschaftslehre, to appear - accepted
R. Stahlbock, S. Lessmann (2003), Potential von Support Vektor Maschinen im analytischen Customer Relationship Management, Working Paper Institute of Information Systems, University of Hamburg. [in German]
- Program chair of the International Conference on Data Mining, (DMIN'07)
- Elected program chair of the International Conference on Data Mining, (DMIN'06)
- Invited reviewer for the International Joint Conference on Neural Networks, (IJCNN'07)
- Invited reviewer for Netnomics
- Invited reviewer for Neural Processing Letters
- Invited reviewer for the Journal of Data & Knowledge Engineering
- Invited reviewer for International Transactions in Operations Research
- Invited reviewer for Annals of Operations Research
- Invited reviewer for Informs Journal of Computing
Corporate Research Collaborations
|2005||IT - Value Management
Detecon Consulting, Germany - Supervision of diploma thesis to derive a framework for IT project portfolio management utilising the economic value added (EVA).
|2004||Churn prediction for insurance companies
Hamburg-Manheimer, Germany - Supervision of empirical study to evaluate various data mining techniques (decision trees, NN, LogReg, etc.) for the task of predicting customer churn.
|2003||Churn prediction for Internet Service Providers
AOL, Germany –Application of multi-layer perceptron neural networks and support vector machines for the tasks of customer churn prediction.
|2003||Detecting insurance fraud
Information Works, Germany - Joint project with Germanys leading BI- consulting company to identidy fraudulent insuranche claims by data mining.
|2003||Response optimisation in subscription based marketing.
Gruner & Jahr, Germany –Consultant in team of 3 faculty members for data mining project with Germany’s leading publishing house, using various neural network methods & support vector machines for cross selling in competition to SPSS Clementine.
|2002||Customer Relationship Management in the financial service sector
IBM Business Consulting Services, Germany - Initiation
and supervision of an empirical study to measure the impact of customer relationship management related concepts within the financial service industry.
Awards & Distinctions
|2006||University of Hamburg Travel Grant, WCCI 2006, Vancouver|
|2004||University of Hamburg Travel Grant, ICAI’04, Las Vegas|
|2004||Participant of the XXII European Summer Institute on Optimization in Data Mining, Ankara, Turkey 2004. Travel Grant from the German Operations Research Society|
|1997 - 1999||Student scholarship, Gruner & Jahr, Germany|
|March 2006||Visiting scholar at the School of Management, University of Southampton|
|2005-2014||Lecturer at the Institute (Information Systems, University of Hamburg)|
|2001 - 2005||Research & Teaching Assistant (Information Systems, University of Hamburg)|
|Since 2004||Managing Board Member of Business Intelligence laboratory (BISlab)|
|1996 - 2001||Under & Postgraduate Studies in Business Administration (University of Hamburg)|
Teaching at UHH
- Object oriented programming with VB.Net
- Introductory course on usage of MS Word, MS Excel and MS Access in business administration
- Development of distributed and web-based systems with ASP.Net
- Supervision of working papers and presentations in seminars on information systems
- Design & pre-correction of final diploma-exams (MBA)
Dr. Torsten Reiners
Dr. Torsten Reiners held a position as research assistant at the institute from 2003. Currently he is working as senior lecturer at Curtin Business School (CBS) at Curtin University in Perth, Australia.
Prof. Dr. Marco Caserta
Dr. Marco Caserta held a position as research assistant at the Institute from 2007 until 2009. Currently, he is working as an adjunct Professor of Operations and Technologies at the IE Business School, and at the IE University in Madrid.
Dipl.-Wirtsch.-Inform. Ronald Krick
Dipl. Kfm. Ronald Krick held a position as research assistant at the institute from 2003 until 2007. Currently he is working as a freelancing Senior Consultant.
Dr. Sebastian Friedrich
Dr. Sebastian Friedrich held a position as research assistant at the institute from 1999 until 2002. Currently he is working in a leading position at the department of mathematical optimization at Initions AG.
Prof. Dr. Andreas Fink
Prof. Dr. Andreas Fink held a position as research assistant at the institute from 2002 until 2005. Currently, he is professor at the Institute of Computer Science at the University of Federal Armed Forces (HSU) in Hamburg.
Prof. Dr. Dr. h. c. Dieter B. Preßmar
Prof. Dr. Dr. h. c. Dieter B. Preßmar was the founder and former chair of the Institute of Information Systems.
assoc. Prof. Dr. Frederik Schulte
From 2012 until 2017 Assoc. Prof. Dr. Frederik Schulte was a research assistant at the IWI. He has received and answered a call to the Technical University of Delft.
Lectures and Courses:
- Information Management (lecture and tutorials in summer term 2013)
- Seminar on Information Systems
Prof. Dr. Malek Sarhani
Dr. Malek Sarhani was a guest researcher and Alexander-von-Humboldt fellow at our institute from 2019 until 2022 and is currently assistant professor at Al Akhawayn University in Rabat, Morocco.
- Computational Intelligence
- Machine Learning
- Time series prediction
- Sarhani, Malek, Abdellatif El Afia, and Rdouan Faizi. "Facing the feature selection problem with a binary PSO-GSA approach".
Recent Developments in Metaheuristics. Springer, Cham, 2018. 447-462. DOI: 10.1007/978-3-319-58253-5_26
- Aoun, Oussama, Malek Sarhani, and Abdellatif El Afia. "Hidden markov model classifier for the adaptive particle swarm
optimization". Recent Developments in Metaheuristics. Springer, Cham, 2018. 1-15. DOI: 10.1007/978-3-319-58253-5_1
- Sarhani, Malek, and Abdellatif El Afia. "Forecasting Demand with Support Vector Regression Technique Combined with X13-ARIMA-SEATS Method in the Presence of Calendar Effect". Artificial Intelligence: Concepts, Methodologies, Tools, and Applications. IGI Global, 2017. 2146-2159. DOI: 10.4018/978-1-5225-1759-7.ch089
- Sarhani, Malek, and Abdellatif El Afia. "Forecasting Demand with Support Vector Regression Technique Incorporating Feature Selection in the Presence of Calendar Effect". Contemporary Approaches and Strategies for Applied Logistics. IGI Global, 2018.
Chapter 12. DOI: 10.4018/978-1-5225-5273-4.ch012
- El Afia, Abdellatif, and Malek Sarhani. "Optimization of a Predictive Aircraft Maintenance Routing Model Using Mutated Constrained Particle Swarm Optimization". Contemporary Approaches and Strategies for Applied Logistics. IGI Global, 2018.
Chapter 15. DOI: 10.4018/978-1-5225-5273-4.ch015
- El Afia, Abdellatif, and Malek Sarhani. "Runtime prediction of optimizers using improved support vector machine". In Cloud Computing and Big Data: Technologies, Applications and Security. Springer, Cham, 2019, 337-350. DOI: 10.1007/978-3-319-97719-5_21
- El Afia, Abdellatif, Malek Sarhani, and Oussama Aoun. "A Probabilistic Finite State Machine Design of Particle Swarm Optimisation". In Bioinspired Heuristics for Optimization. Springer, Cham, 2019. 185-201. 10.1007/978-3-319-95104-1_12
- Sarhani, Malek, and Abdellatif El Afia. "Simultaneous feature selection and parameter optimisation of support vector machine using adaptive particle swarm gravitational search algorithm". International Journal of Metaheuristics 5.1 (2016): 51-66. DOI: 10.1504/IJMHEUR.2016.079112
- Sarhani, Malek, Abdellatif El Afia, and Rdouan Faizi. "Hybrid approach-based support vector machine for electric load forecasting incorporating feature selection". International Journal of Big Data Intelligence, 4.3 (2017): 141-148. DOI: 10.1504/IJBDI.2017.085520
- Aoun, Oussama, Malek Sarhani, and Abdellatif El Afia. "Investigation of hidden markov model for the tuning of metaheuristics in airline scheduling problems". IFAC-PapersOnLine 49.3 (2016): 347-352. DOI: 10.1016/j.ifacol.2016.07.058
- Aoun, Oussama, Malek Sarhani, and Abdellatif El Afia. "Particle swarm optimisation with population size and acceleration coefficients adaptation using hidden Markov model state classification". International Journal of Metaheuristics 7.1 (2018): 1-29.
- El Afia, Abdellatif, Malek Sarhani, and Oussama Aoun. "Hidden markov model control of inertia weight adaptation for Particle swarm optimization". IFAC-PapersOnLine 50.1 (2017): 9997-10002. DOI: 10.1016/j.ifacol.2017.08.2030
- Ezzinbi, Omar, Malek Sarhani, Abdellatif El Afia and Youssef Benadada "Preventive Maintenance with Aircraft on Ground Case Consideration, and Airline Crew Scheduling Problem: A Meta-Heuristics Approaches". International Journal of Applied Logistics (IJAL) 5.2 (2014): 62-73. DOI: 10.4018/ijal.2014040105
- Sarhani, Malek, and Abdellatif El Afia. "Generalization enhancement of support vector regression in electric load forecasting with model selection." International Conference on Learning and Optimization Algorithms (LOPAL). ACM, 2018. DOI: 10.1145/3230905.3230947
- Sarhani, Malek, and Abdellatif El Afia. "Electric Load Forecasting Using Hybrid Machine Learning Model incorporating Feature selection". Proceedings of the First International Conference on Big Data, Cloud and Applications: Selected Papers. CEUR Workshop Proceedings, 2015. URN: urn:nbn:de:0074-1580-3
- Sarhani, Malek, and Abdellatif El Afia. "An extension of X13-ARIMA-SEATS to forecast Islamic holidays effect on logistic activities". Second International Conference on Logistics and Operations Management (GOL). IEEE, 2014. DOI: 10.1109/GOL.2014.6887423
- Sarhani, Malek, and Abdellatif El Afia. "Intelligent system based support vector regression for supply chain demand forecasting". Second World Conference on Complex Systems (WCCS). IEEE, 2014. DOI: 10.1109/ICoCS.2014.7060941
- Sarhani, Malek, Omar Ezzinbi, Abdellatif El Afia, and Youssef Benadada "Particle swarm optimization with a mutation operator for solving the preventive aircraft maintenance routing problem". Third International Conference on Logistics and Operations Management (GOL). IEEE, 2016. DOI: 10.1109/GOL.2016.7731683 Journal of Applied Logistics (IJAL) 5.2 (2014): 62-73.
- Sarhani, Malek, and Abdellatif El Afia. "Feature selection and parameter optimization of support vector regression for electric load forecasting". International Conference on Electrical and Information Technologies (ICEIT). IEEE, 2016. DOI: 10.1109/EITech.2016.7519608
- El Afia, Abdellatif, and Malek Sarhani. "Particle Swarm Optimization for Model Selection of Aircraft Maintenance Predictive Models". Proceedings of the 2nd international Conference on Big Data, Cloud and Applications. ACM, 2017. DOI: 10.1145/3090354.3090355
- Ezzinbi, Omar, Malek Sarhani, Abdellatif El Afia, and Youssef Benadada "A metaheuristic approach for solving the airline maintenance routing with aircraft on ground problem". Second International Conference on Logistics and Operations Management (GOL). IEEE, 2014. DOI: 10.1109/GOL.2014.6887447
- Ezzinbi, Omar, Malek Sarhani, Abdellatif El Afia, and Youssef Benadada "Particle swarm optimization algorithm for solving airline crew scheduling problem". Second International Conference on Logistics and Operations Management (GOL). IEEE, 2014. DOI: 10.1109/GOL.2014.6887446
- El Afia, Abdellatif, and Malek Sarhani. "Performance prediction using support vector machine for the configuration of optimization algorithms". Third International Conference of Cloud Computing Technologies and Applications. IEEE, 2017. DOI: 10.1109/CloudTech.2017.8284699
|09/2019- 02/2022||Visiting researcher at Hamburg University|
|2014 - 2018||Doctoral student at Mohammed V University,
|2009 - 2012||Master of engineering at Mohammed V
|2007 - 2009||Undergraduate degree, Tangier, Morocco|
Dipl.- Kfm. Michael Myschik
Mr. Michael Myschik has been a research associate and lecturer at the IWI until Dec 31, 2018. He is now retired.
- Apprenticeship in Information Systems – especiially product-based knowledge and skills related to IT(e.g. handling of application systems, especially of SAP products).
- Since 2009 contact person (SAP-A-User) for central coordination between the Hamburg Business School, the UCC Magdeburg and the SAP AG.
Lectures and Courses:
Winter Term 2016/17: Enterprise Resource Planning: Impact of ABAP Objects in the context of SAP ERP
Summer Term 2017: Design and Implementation of Business Processes in SAP ERP
Winter Term 20117/18: Enterprise Resource Planning: Impact of ABAP Objects in the context of SAP ERP
Summer Term 2018: Design and Implementation of Business Processes in SAP ERP
- administration of central network resources of the HBS
- in case of need supporting consultancy of IT projects and procurement of hard- and software.
- In March 2001 Mr. Myschik and a project team from the Institute of Information Systems installed a client-server-system including an integrated training system for the computer science apprenticeship at the economic University of Tashkent Usbekistan (TSEU).
|since 2009||contact person (SAP-A-User) for central coordination between the HBS, the UCC Magdeburg and the SAP AG.|
|since winter term 2007/08 Mr. Myschik gave the following SAP lectures within the module "applications and programming", which were previously held by Mr. Karl-Wolfgang Hirsch:
|since1998||research associate at the Institue of Information Systems with special local-administrative tasks for the Department of Economic Sciences.|
|since 1979||research associate and assistant for the chairmen of the audit committee and director of the examination office diploma students in Social and Economic Sciences.|
|1973 - 1979||studies in business administration at the University of Hamburg and diploma degree with main focuses on business administrative computing, business administrative taxation as well as auditing and trusts.|
Weitere ehemalige Mitglieder
- Dr. Stefan Anschütz
- Dr. Sven Crone
- René Eisenberg
- André Henkel
- Holger Höller
- Imke Sassen