Many-to-Many Multi-Agent Pickup and Delivery

Fuente: arXiv
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Hauptverfasser: Schneider, Ethan, Chen, Jingkai, Gu, Tianyi, Lian, Kunlei, Hutchinson, Seth, Chernova, Sonia
Format: Preprint
Veröffentlicht: 2026
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author Schneider, Ethan
Chen, Jingkai
Gu, Tianyi
Lian, Kunlei
Hutchinson, Seth
Chernova, Sonia
author_facet Schneider, Ethan
Chen, Jingkai
Gu, Tianyi
Lian, Kunlei
Hutchinson, Seth
Chernova, Sonia
contents Multi-robot systems in automated warehouses must manage continuous streams of pickup-and-delivery tasks while ensuring efficiency and safety. Prior work on Multi-Agent Pickup-and-Delivery (MAPD) has largely focused on the one-to-one variant, where each task has a fixed pickup and delivery location. In contrast, real warehouses often present many-to-many MAPD scenarios, where items, tracked by stock keeping unit (SKU) identifiers, can be retrieved from or stored at multiple locations, resulting in an NP-hard four-dimensional assignment problem. To solve the many-to-many MAPD problem, we contribute our algorithm: Many-to-Many Multi-Agent Pickup and Delivery (M2M). We experiment with two variants of our algorithm: one that minimizes estimated task durations (M2M), and one which incorporates SKU distribution into the objective function (M2M-wSKU). Simulation results over 8-hour warehouse operations show that our method consistently matches or outperforms prior state of the art, with M2M completing up to 22,000 more tasks on average across different environments and warehouse inventory densities.
format Preprint
id arxiv_https___arxiv_org_abs_2605_07835
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Many-to-Many Multi-Agent Pickup and Delivery
Schneider, Ethan
Chen, Jingkai
Gu, Tianyi
Lian, Kunlei
Hutchinson, Seth
Chernova, Sonia
Robotics
Multiagent Systems
Multi-robot systems in automated warehouses must manage continuous streams of pickup-and-delivery tasks while ensuring efficiency and safety. Prior work on Multi-Agent Pickup-and-Delivery (MAPD) has largely focused on the one-to-one variant, where each task has a fixed pickup and delivery location. In contrast, real warehouses often present many-to-many MAPD scenarios, where items, tracked by stock keeping unit (SKU) identifiers, can be retrieved from or stored at multiple locations, resulting in an NP-hard four-dimensional assignment problem. To solve the many-to-many MAPD problem, we contribute our algorithm: Many-to-Many Multi-Agent Pickup and Delivery (M2M). We experiment with two variants of our algorithm: one that minimizes estimated task durations (M2M), and one which incorporates SKU distribution into the objective function (M2M-wSKU). Simulation results over 8-hour warehouse operations show that our method consistently matches or outperforms prior state of the art, with M2M completing up to 22,000 more tasks on average across different environments and warehouse inventory densities.
title Many-to-Many Multi-Agent Pickup and Delivery
topic Robotics
Multiagent Systems
url https://arxiv.org/abs/2605.07835