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| Presentation | 2022-05-19 13:35 Transportation Problem Allowing Sending and Bringing Back Tetsuo Asano (Kanazawa Univ.)  COMP2022-2 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | This paper considers a transportation problem on a weighted graph. The weights specify the amounts of commodities at nodes, which are positive if the amounts are stored at nodes and negative if the amounts are needed at nodes. To meet all demands we use vehicles, one at each node, with some loading capacity to and from neighbors. In a trip using a vehicle we can send commodities from a node to a neighbor along an edge and also bring back some other commodities from the neighbor. In this paper we are interested in feasibility problem, which is to decide whether there is a single round of trips that meet all demands. We prove the feasibility problem is NP-complete even in the easiest case of a one-commodity transportation problem with unbounded capacity. We also present several different polynomial-time algorithms for other cases. |
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| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | / / / / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 122, no. 33, COMP2022-2, pp. 9-16, May 2022. | |
| Paper # | COMP2022-2 | |
| Date of Issue | 2022-05-12 (COMP) | |
| ISSN | Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | COMP2022-2 |
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| Conference Information | |
| Committee | COMP IPSJ-AL |
| Conference Date | 2022-05-19 - 2022-05-20 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | COMP |
| Conference Code | 2022-05-COMP-AL |
| Language | English |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Transportation Problem Allowing Sending and Bringing Back |
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| 1st Author's Name | Tetsuo Asano |
| 1st Author's Affiliation | Kanazawa University (Kanazawa Univ.) |
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| Speaker | Author-1 |
| Date Time | 2022-05-19 13:35:00 |
| Presentation Time | 35 minutes |
| Registration for | COMP |
| Paper # | COMP2022-2 |
| Volume (vol) | vol.122 |
| Number (no) | no.33 |
| Page | pp.9-16 |
| #Pages | 8 |
| Date of Issue | 2022-05-12 (COMP) |
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