TY - GEN A1 - Hiller, Benjamin A1 - Klug, Torsten A1 - Tuchscherer, Andreas T1 - An Exact Reoptimization Algorithm for the Scheduling of Elevator Groups N2 - The task of an elevator control is to schedule the elevators of a group such that small waiting and travel times for the passengers are obtained. We present an exact reoptimization algorithm for this problem. A reoptimization algorithm computes a new schedule for the elevator group each time a new passenger arrives. Our algorithm uses column generation techniques and is, to the best of our knowledge, the first exact reoptimization algorithms for a group of passenger elevators. To solve the column generation problem, we propose a Branch & Bound method. T3 - ZIB-Report - 12-43 KW - elevator control, online optimization, reoptimization algorithms, column generation Y1 - 2012 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:0297-zib-16485 SN - 1438-0064 ER - TY - JOUR A1 - Hiller, Benjamin A1 - Klug, Torsten A1 - Tuchscherer, Andreas T1 - An Exact Reoptimization Algorithm for the Scheduling of Elevator Groups JF - Flexible Services and Manufacturing Journal Y1 - 2013 U6 - https://doi.org/10.1007/s10696-013-9175-6 SP - 1 EP - 24 ER - TY - CHAP A1 - Hiller, Benjamin A1 - Klug, Torsten A1 - Tuchscherer, Andreas T1 - Improved destination call elevator control algorithms for up peak traffic T2 - Operations Research Proceedings 2010 Y1 - 2010 PB - Springer ER - TY - CHAP A1 - Hiller, Benjamin A1 - Klug, Torsten A1 - Tuchscherer, Andreas T1 - Improving the performance of elevator systems using exact reoptimization algorithms T2 - Proceedings of MAPSP Y1 - 2009 UR - http://opus.kobv.de/zib/volltexte/2009/1161/ SP - 224 EP - 226 ER - TY - GEN A1 - Hiller, Benjamin A1 - Klug, Torsten A1 - Tuchscherer, Andreas T1 - Improving the performance of elevator systems using exact reoptimization algorithms N2 - This extended abstract is about algorithms for controlling elevator systems employing destination hall calls, i.e. the passenger provides his destination floor when calling an elevator. We present the first exact algorithm for controlling a group of elevators and report on simulation results indicating that destination hall call systems outperform conventional systems. T3 - ZIB-Report - 09-05 KW - Aufzugssteuerung KW - Onlineoptimierung KW - Exakte Reoptimierung KW - elevator control KW - online optimization KW - exact reoptimation Y1 - 2009 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:0297-zib-11155 SN - 1438-0064 ER - TY - GEN A1 - Hiller, Benjamin A1 - Klug, Torsten A1 - Witzig, Jakob T1 - Reoptimization in branch-and-bound algorithms with an application to elevator control N2 - We consider reoptimization (i.e. the solution of a problem based on information available from solving a similar problem) for branch-and-bound algorithms and propose a generic framework to construct a reoptimizing branch-and-bound algorithm. We apply this to an elevator scheduling algorithm solving similar subproblems to generate columns using branch-and-bound. Our results indicate that reoptimization techniques can substantially reduce the running times of the overall algorithm. T3 - ZIB-Report - 13-15 KW - reoptimization KW - branch-and-bound KW - column generation KW - elevator control Y1 - 2013 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:0297-zib-17876 SN - 1438-0064 ER - TY - CHAP A1 - Hiller, Benjamin A1 - Klug, Torsten A1 - Witzig, Jakob T1 - Reoptimization in branch-and-bound algorithms with an application to elevator control T2 - Proceedings of the 12th International Symposium on Experimental Algorithms Y1 - 2013 U6 - https://doi.org/10.1007/978-3-642-38527-8_33 VL - 7933 SP - 378 EP - 389 ER -