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      -------- Mensaje reenviado --------
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            <th valign="BASELINE" nowrap="nowrap" align="RIGHT">Asunto:
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            <td>[Alio] Twelfth DIMACS Implementation Challenge: Vehicle
              Routing Problems</td>
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            <th valign="BASELINE" nowrap="nowrap" align="RIGHT">Fecha: </th>
            <td>Tue, 15 Sep 2020 18:55:50 -0300</td>
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            <th valign="BASELINE" nowrap="nowrap" align="RIGHT">De: </th>
            <td>Irene Loiseau <a class="moz-txt-link-rfc2396E" href="mailto:irene@dc.uba.ar">&lt;irene@dc.uba.ar&gt;</a></td>
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            <th valign="BASELINE" nowrap="nowrap" align="RIGHT">Organización:
            </th>
            <td>Depto. Computación, FCEN, UBA</td>
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            <th valign="BASELINE" nowrap="nowrap" align="RIGHT">Para: </th>
            <td><a class="moz-txt-link-abbreviated" href="mailto:alio@dc.uba.ar">alio@dc.uba.ar</a></td>
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              <p><strong>Twelfth DIMACS Implementation Challenge:
                  Vehicle Routing Problems</strong></p>
              <p style="margin-bottom: 12.0pt;"><strong>Held in Memory
                  of David S. Johnson</strong></p>
              <p style="margin-bottom: 12.0pt;"><strong>Organizers:</strong>
                <br>
                <br>
                Claudia Archetti, University of Brescia<br>
                Catherine McGeoch, D-Wave Systems<br>
                Jorge Mendoza, HEC Montréal<br>
                Panos Pardalos, University of Florida<br>
                Mauricio Resende, Amazon<br>
                Eduardo Uchoa, Universidade Federal Fluminense<br>
                Thibaut Vidal, Pontifical Catholic University of Rio de
                Janeiro</p>
              <p>Presented in association with the <a
                  href="http://dimacs.rutgers.edu/programs/sf/sf-optimization/"
                  target="_blank" rel="noopener noreferrer"
                  moz-do-not-send="true"> Special Focus on Bridging
                  Continuous and Discrete Optimization</a> and the <a
                  href="http://dimacs.rutgers.edu/archive/Challenges/"
                  target="_blank" rel="noopener noreferrer"
                  moz-do-not-send="true"> Implementation Challenges</a>.</p>
              <p>*********************************************************************</p>
              <p><strong>Announcement:<br>
                  <br>
                </strong><a
                  href="http://dimacs.rutgers.edu/programs/challenge/"
                  target="_blank" rel="noopener noreferrer"
                  moz-do-not-send="true">Implementation Challenges</a>
                trace back to the early years of DIMACS and to the
                vision of David S. Johnson to use experimentation as a
                companion to <img
                  src="cid:part4.4E254D5D.DC4DBAE3@fing.edu.uy"
alt="http://dimacs.rutgers.edu/tools/fileman/Uploads/Logos/VRP_logo_300px.png"
                  class="" width="207" hspace="12" height="77"
                  align="left">theory to gain more holistic perspective
                on the performance of algorithms. The over-arching
                purpose of a Challenge is to assess the practical
                performance of algorithms for a particular problem
                class, while fostering interactions that transfer ideas
                between research areas related to algorithms, data
                structures, implementation, and applications. This <a
                  href="http://dimacs.rutgers.edu/programs/challenge/vrp/"
                  target="_blank" rel="noopener noreferrer"
                  moz-do-not-send="true"> 12th DIMACS Implementation
                  Challenge</a> will be held in honor of David S.
                Johnson on the topic of Vehicle Routing Problems. </p>
              <p> </p>
              <p>The Vehicle Routing Problem (VRP) and other related
                dispatch problems have been widely studied for over
                fifty years because they are of both practical relevance
                and theoretical interest. Designing efficient routes for
                vehicles performing distribution or service functions
                translates directly to cost savings, making vehicle
                routing a topic of great commercial interest. Moreover,
                the fact that it generalizes the Traveling Salesman
                Problem, but is substantially more difficult, has kept
                it in the sights of theoreticians for decades. The VRP
                exists in a myriad of variations that arise from
                practical considerations like vehicle capacities,
                delivery time windows, delays in road networks, and the
                ability to split deliveries.</p>
              <p> </p>
              <p style="margin-bottom: 6.0pt;">Because of the expansive
                problem space, this Challenge will consider multiple VRP
                variants, representing a mix of classic VRP variants and
                newer variants inspired by practical considerations. The
                Challenge will address 7 or 8 problem variants,
                including some "classics" and some of the most
                challenging of the VRP family. These problems focus on
                features that are critical to bridging the gap between
                application and practice, but they lead to different
                structural characteristics favoring different solution
                approaches. The featured variants include: <br>
                1) Capacitated VRP (CVRP); 2) VRP with Time Windows
                (VRPTW); 3) Inventory Routing Problem (IRP); 4) VRP with
                Split Deliveries (VRPSD); 5) Stochastic VRPs; 6)
                Capacitated Arc Routing (CARP) in realistic city
                networks; 7) CARP with time-dependent costs; and 8)
                Online Routing (under consideration but not confirmed).</p>
              <p style="margin-bottom: 6.0pt; text-align: justify;">We
                invite participants to submit instances or additional
                variants for potential inclusion. While we expect some
                common ideas to be applied across all problems, there
                will also be some important and necessary differences
                between methods, creating a rich and multi-faceted
                exchange throughout the Challenge.</p>
              <p style="margin-bottom: 6.0pt; text-align: justify;">We
                will leverage existing sets of problems instances and
                augment them with larger and more challenging examples,
                based on real transportation networks and city maps when
                possible.</p>
              <p style="margin-bottom: 6.0pt; text-align: justify;">The
                Challenge will conclude with a workshop held at DIMACS
                at Rutgers University. The workshop will pay tribute to
                the many contributions of David S. Johnson during a
                special banquet and related social activities. Teams
                participating in the Challenge should plan to submit a
                paper and present their work during the workshop if
                selected. Others are also invited to submit papers on
                novel methods for presentation at the workshop. </p>
              <p style="margin-right: 0in; margin-bottom: 4.0pt;
                margin-left: .25in; text-align: justify;"><span
                  style="font-family: Symbol;">·</span><span
                  style="font-size: 7.0pt;">         </span> <strong>Visit
                  the VRP Challenge website</strong>: <a
                  href="http://dimacs.rutgers.edu/programs/challenge/vrp/"
                  target="_blank" rel="noopener noreferrer"
                  moz-do-not-send="true">
                  http://dimacs.rutgers.edu/programs/challenge/vrp/</a>
                <span style="font-size: 11.0pt; font-family:
                  'Calibri',sans-serif;"> </span></p>
              <p style="margin-right: 0in; margin-bottom: 4.0pt;
                margin-left: .25in; text-align: justify;"><span
                  style="font-family: Symbol;">·</span><span
                  style="font-size: 7.0pt;">         </span> <strong>Follow
                  the Challenge on twitter</strong>: <a
href="https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Ftwitter.com%2FDIMACSChallenge&amp;data=02%7C01%7Clindac%40dimacs.rutgers.edu%7Cab543ea38a1448c4221908d8559f4e7a%7Cb92d2b234d35447093ff69aca6632ffe%7C1%7C0%7C637353489983270043&amp;sdata=3PMeCZugpPKXn%2B1pdz4TW%2Bpucifvz5mreqgbNo07amo%3D&amp;reserved=0"
                  target="_blank" rel="noopener noreferrer"
                  moz-do-not-send="true">
                  https://twitter.com/DIMACSChallenge</a> <span
                  style="font-size: 11.0pt; font-family:
                  'Calibri',sans-serif;"> </span></p>
              <p style="margin-right: 0in; margin-bottom: 4.0pt;
                margin-left: .25in;"><span style="font-family: Symbol;">·</span><span
                  style="font-size: 7.0pt;">         </span> <strong>Subscribe
                  to the mailing list</strong>: <a
                  href="http://email.rutgers.edu/mailman/listinfo/dimacs_vrp_challenge"
                  target="_blank" rel="noopener noreferrer"
                  moz-do-not-send="true">
                  http://email.rutgers.edu/mailman/listinfo/dimacs_vrp_challenge</a>
                <span style="font-size: 11.0pt; font-family:
                  'Calibri',sans-serif;"> </span></p>
              <p style="margin-right: 0in; margin-bottom: 4.0pt;
                margin-left: .25in; text-align: justify;"><span
                  style="font-family: Symbol;">·</span><span
                  style="font-size: 7.0pt;">         </span> <strong>Email
                  organizers</strong>: <a
                  href="mailto:dimacs_vrp_challenge_committee@email.rutgers.edu"
                  moz-do-not-send="true">
                  dimacs_vrp_challenge_committee@email.rutgers.edu</a> <span
                  style="font-size: 11.0pt; font-family:
                  'Calibri',sans-serif;"> </span></p>
              <p style="margin-right: 0in; margin-bottom: 12.0pt;
                margin-left: .25in;"><span style="font-family: Symbol;">·</span><span
                  style="font-size: 7.0pt;">         </span> <strong>View
                  the</strong> <a
href="http://dimacs.rutgers.edu/tools/fileman/Uploads/Documents/VRP-Challenge/VRPChallenge_onepage_Aug2020.pdf"
                  target="_blank" rel="noopener noreferrer"
                  moz-do-not-send="true"> VRP Challenge flyer</a>.</p>
              <p> *********************************************************************</p>
              <p style="margin-bottom: 12.0pt;"><strong>Call for
                  Participation:</strong></p>
              <p>The Implementation Challenge workshop is open for all
                to attend (subject to space constraints). Registration
                is not yet open, but you must register to attend. To
                participate in the Challenge, please visit the <a
                  href="http://dimacs.rutgers.edu/programs/challenge/vrp/"
                  target="_blank" rel="noopener noreferrer"
                  moz-do-not-send="true">Challenge website</a> for
                details.</p>
              <p><span style="color: black;">*********************************************************************</span></p>
              <p>Workshop web site (including workshop registration when
                it opens):  </p>
              <p><a
                  href="http://dimacs.rutgers.edu/events/details?eID=1090"
                  target="_blank" rel="noopener noreferrer"
                  moz-do-not-send="true">http://dimacs.rutgers.edu/events/details?eID=1090</a></p>
            </div>
            _______________________________________________<br>
            DIMACS_SF_Optimization mailing list<br>
            <a href="mailto:DIMACS_SF_Optimization@email.rutgers.edu"
              moz-do-not-send="true">DIMACS_SF_Optimization@email.rutgers.edu</a><br>
            <a
              href="https://email.rutgers.edu/mailman/listinfo/dimacs_sf_optimization"
              target="_blank" rel="noopener noreferrer"
              moz-do-not-send="true">https://email.rutgers.edu/mailman/listinfo/dimacs_sf_optimization</a><br>
             </div>
          <span class="sig">-- <br>
            Irene Loiseau<br>
            Departamento de Computación<br>
            Facultad de Ciencias Exactas y Naturales<br>
            Universidad de Buenos Aires<br>
            <br>
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