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  <doc>
    <id>711</id>
    <completedYear/>
    <publishedYear/>
    <thesisYearAccepted/>
    <language>eng</language>
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    <pageNumber/>
    <edition/>
    <issue/>
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    <type>reportzib</type>
    <publisherName/>
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    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2002-11-25</completedDate>
    <publishedDate>2002-11-25</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Online-Dispatching of Automobile Service Units</title>
    <abstract language="eng">We present an online algorithm for a real-world vehicle dispatching problem at ADAC, the German Automobile Association.</abstract>
    <identifier type="serial">02-44</identifier>
    <identifier type="opus3-id">712</identifier>
    <identifier type="urn">urn:nbn:de:0297-zib-7117</identifier>
    <enrichment key="SourceTitle">Appeared in: Operations Research Proceedings 2002. Selected Papers of the International Conference on Operations Research (SOR 2002), Klagenfurt, September 2-5, 2002. U. Leopold-Wildburger et al. (eds.) Berlin: Springer 2003. Pp. 168-173</enrichment>
    <author>Sven Krumke</author>
    <author>Jörg Rambau</author>
    <author>Luis Miguel Torres</author>
    <series>
      <title>ZIB-Report</title>
      <number>02-44</number>
    </series>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>vehicle dispatching</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>soft time windows</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>online</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>real-time</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>ADAC</value>
    </subject>
    <collection role="ddc" number="000">Informatik, Informationswissenschaft, allgemeine Werke</collection>
    <collection role="msc" number="90B06">Transportation, logistics</collection>
    <collection role="institutes" number="">ZIB Allgemein</collection>
    <collection role="projects" number="ADAC-Dispatch">ADAC-Dispatch</collection>
    <collection role="projects" number="MATHEON-C6:Online-Reopt">MATHEON-C6:Online-Reopt</collection>
    <file>https://opus4.kobv.de/opus4-zib/files/711/ZR-02-44.ps</file>
    <file>https://opus4.kobv.de/opus4-zib/files/711/ZR-02-44.pdf</file>
  </doc>
  <doc>
    <id>685</id>
    <completedYear/>
    <publishedYear/>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
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    <type>reportzib</type>
    <publisherName/>
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    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2002-04-08</completedDate>
    <publishedDate>2002-04-08</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Making the Yellow Angels Fly: Online Dispatching Of Service Vehicles in Real Time</title>
    <abstract language="eng">Combinatorial online optimization is an area with lots of applications and potential for significant progress, both in theory and practice. In this short note we sketch the ADACproblem, a typical large-scale online optimization problem, discuss some theoretical and pratical issues coming up, and explain, very briefly, how we approach this problem mathematically. Online problems are a battlefield of heuristics with many strong claims about their solution quality. We indicate that a stronger problem orientation and the use of a little more mathematics may yield.</abstract>
    <identifier type="serial">02-18</identifier>
    <identifier type="opus3-id">686</identifier>
    <identifier type="urn">urn:nbn:de:0297-zib-6858</identifier>
    <enrichment key="SourceTitle">Appeared in: SIAM News, Vol. 35, No. 4, (2002) pp. 10-11</enrichment>
    <author>Martin Grötschel</author>
    <author>Sven Krumke</author>
    <author>Jörg Rambau</author>
    <author>Luis Miguel Torres</author>
    <series>
      <title>ZIB-Report</title>
      <number>02-18</number>
    </series>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>vehicle dispatching</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>soft time windows</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>real-time</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>column generation</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>pricing</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>branch and bound</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>real world data</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>ADAC</value>
    </subject>
    <collection role="ddc" number="000">Informatik, Informationswissenschaft, allgemeine Werke</collection>
    <collection role="msc" number="90B06">Transportation, logistics</collection>
    <collection role="institutes" number="">ZIB Allgemein</collection>
    <collection role="persons" number="groetschel">Grötschel, Martin</collection>
    <collection role="projects" number="ADAC-Dispatch">ADAC-Dispatch</collection>
    <collection role="projects" number="MATHEON-C6:Online-Reopt">MATHEON-C6:Online-Reopt</collection>
    <file>https://opus4.kobv.de/opus4-zib/files/685/ZR-02-18.ps</file>
    <file>https://opus4.kobv.de/opus4-zib/files/685/ZR-02-18.pdf</file>
  </doc>
  <doc>
    <id>648</id>
    <completedYear/>
    <publishedYear/>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
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    <type>reportzib</type>
    <publisherName/>
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    <creatingCorporation/>
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    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2001-09-25</completedDate>
    <publishedDate>2001-09-25</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Real-Time Dispatching of Guided and Unguided Automobile Service Units with Soft Time Windows</title>
    <abstract language="eng">Given a set of service requests (events), a set of guided servers (units), and a set of unguided service contractors (conts), the vehicle dispatching problem {\sl vdp} is the task to find an assignment of events to units and conts as well as tours for all units starting at their current positions and ending at their home positions (dispatch) such that the total cost of the dispatch is minimized. The cost of a dispatch is the sum of unit costs, cont costs, and event costs. Unit costs consist of driving costs, service costs and overtime costs; cont costs consist of a fixed cost per service; event costs consist of late costs linear in the late time, which occur whenever the service of the event starts later than its deadline. The program \textsf{ZIBDIP} based on dynamic column generation and set partitioning yields solutions on heavy-load real-world instances (215 events, 95 units) in less than a minute that are no worse than 1\% from optimum on state-of-the-art personal computers.</abstract>
    <identifier type="serial">01-22</identifier>
    <identifier type="opus3-id">649</identifier>
    <identifier type="urn">urn:nbn:de:0297-zib-6484</identifier>
    <enrichment key="SourceTitle">Appeared in: Algorithms - ESA 2002. Proceedings of the 10th European Symposium on Algorithms, Rome, Italy, September 17-21, 2002. R. Möhring et al. (eds.) Berlin: Springer 2002. LNCS 2461, pp. 637-648</enrichment>
    <author>Sven Krumke</author>
    <author>Jörg Rambau</author>
    <author>Luis Miguel Torres</author>
    <series>
      <title>ZIB-Report</title>
      <number>01-22</number>
    </series>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>vehicle dispatching</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>soft time windows</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>real-time</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>column generation</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>pricing</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>branch and bound</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>real world data</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>ADAC</value>
    </subject>
    <collection role="ddc" number="000">Informatik, Informationswissenschaft, allgemeine Werke</collection>
    <collection role="msc" number="90B06">Transportation, logistics</collection>
    <collection role="institutes" number="">ZIB Allgemein</collection>
    <collection role="projects" number="ADAC-Dispatch">ADAC-Dispatch</collection>
    <collection role="projects" number="MATHEON-C6:Online-Reopt">MATHEON-C6:Online-Reopt</collection>
    <file>https://opus4.kobv.de/opus4-zib/files/648/ZR-01-22.ps</file>
    <file>https://opus4.kobv.de/opus4-zib/files/648/ZR-01-22.pdf</file>
  </doc>
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