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Building a dialogue agent to fulfill complex tasks, such as travel planning, is challenging because the agent has to learn to collectively complete multiple subtasks. For example, the agent needs to reserve a hotel and book a flight so that…

Computation and Language · Computer Science 2017-07-25 Baolin Peng , Xiujun Li , Lihong Li , Jianfeng Gao , Asli Celikyilmaz , Sungjin Lee , Kam-Fai Wong

Travel planning is a complex task that involves generating a sequence of actions related to visiting places subject to constraints and maximizing some user satisfaction criteria. Traditional approaches rely on problem formulation in a given…

Artificial Intelligence · Computer Science 2024-06-17 Tomas de la Rosa , Sriram Gopalakrishnan , Alberto Pozanco , Zhen Zeng , Daniel Borrajo

Recent studies have highlighted their proficiency in some simple tasks like writing and coding through various reasoning strategies. However, LLM agents still struggle with tasks that require comprehensive planning, a process that…

Artificial Intelligence · Computer Science 2024-05-29 Chengxing Xie , Difan Zou

Chain-of-thought (CoT) reasoning has emerged as an effective approach for activating latent capabilities in LLMs. Interestingly, we observe that both CoT reasoning and self-training share the core objective: iteratively leveraging…

Computation and Language · Computer Science 2025-05-27 Zongqian Wu , Baoduo Xu , Ruochen Cui , Mengmeng Zhan , Xiaofeng Zhu , Lei Feng

Real-world autonomous planning requires coordinating tightly coupled constraints where a single decision dictates the feasibility of all subsequent actions. However, existing benchmarks predominantly feature loosely coupled constraints…

Large language models (LLMs) demonstrate strong reasoning abilities via Chain-of-Thought (CoT), but their token-level generation encourages local decisions and lacks global planning, often leading to redundant or inaccurate reasoning.…

Unlike reasoning, which often entails a deep sequence of deductive steps, complex real-world planning is characterized by the need to synthesize a broad spectrum of parallel and potentially conflicting information and constraints. For…

Artificial Intelligence · Computer Science 2025-10-14 Dongjie Yang , Chengqiang Lu , Qimeng Wang , Xinbei Ma , Yan Gao , Yao Hu , Hai Zhao

Our goal is to answer real-world tourism questions that seek Points-of-Interest (POI) recommendations. Such questions express various kinds of spatial and non-spatial constraints, necessitating a combination of textual and spatial…

Artificial Intelligence · Computer Science 2021-06-08 Danish Contractor , Shashank Goel , Mausam , Parag Singla

The problem of recommending tours to travellers is an important and broadly studied area. Suggested solutions include various approaches of points-of-interest (POI) recommendation and route planning. We consider the task of recommending a…

Machine Learning · Computer Science 2016-08-26 Dawei Chen , Cheng Soon Ong , Lexing Xie

Recent advances in trajectory replanning have enabled quadrotor to navigate autonomously in unknown environments. However, high-speed navigation still remains a significant challenge. Given very limited time, existing methods have no strong…

Robotics · Computer Science 2020-07-08 Boyu Zhou , Jie Pan , Fei Gao , Shaojie Shen

Combinatorial optimization problems involving multiple agents are notoriously challenging due to their NP-hard nature and the necessity for effective agent coordination. Despite advancements in learning-based methods, existing approaches…

Multiagent Systems · Computer Science 2025-10-23 Federico Berto , Chuanbo Hua , Laurin Luttmann , Jiwoo Son , Junyoung Park , Kyuree Ahn , Changhyun Kwon , Lin Xie , Jinkyoo Park

For many applications of reinforcement learning it can be more convenient to specify both a reward function and constraints, rather than trying to design behavior through the reward function. For example, systems that physically interact…

Machine Learning · Computer Science 2017-05-31 Joshua Achiam , David Held , Aviv Tamar , Pieter Abbeel

Route recommendation aims to provide users with optimal travel plans that satisfy diverse and complex requirements. Classical routing algorithms (e.g., shortest-path and constraint-aware search) are efficient but assume structured inputs…

Artificial Intelligence · Computer Science 2025-10-08 Tao Zhe , Rui Liu , Fateme Memar , Xiao Luo , Wei Fan , Xinyue Ye , Zhongren Peng , Dongjie Wang

Modular self-reconfigurable satellites refer to satellite clusters composed of individual modular units capable of altering their configurations. The configuration changes enable the execution of diverse tasks and mission objectives.…

Robotics · Computer Science 2025-07-23 Bofei Liu , Dong Ye , Zunhao Yao , Zhaowei Sun

Deep Reinforcement Learning has emerged as an efficient dynamic obstacle avoidance method in highly dynamic environments. It has the potential to replace overly conservative or inefficient navigation approaches. However, the integration of…

Robotics · Computer Science 2021-04-09 Linh Kästner , Teham Buiyan , Xinlin Zhao , Zhengcheng Shen , Cornelius Marx , Jens Lambrecht

Multimodal Chain-of-Thought (CoT) reasoning requires large vision-language models to construct reasoning trajectories that interleave perceptual grounding with multi-step inference. However, existing Reinforcement Learning with Verifiable…

Computer Vision and Pattern Recognition · Computer Science 2026-03-25 Yunheng Li , Hangyi Kuang , Hengrui Zhang , Jiangxia Cao , Zhaojie Liu , Qibin Hou , Ming-Ming Cheng

In information retrieval, large language models (LLMs) have demonstrated remarkable potential in text reranking tasks by leveraging their sophisticated natural language understanding and advanced reasoning capabilities. However,…

Information Retrieval · Computer Science 2025-09-22 Haowei Liu , Xuyang Wu , Guohao Sun , Zhiqiang Tao , Yi Fang

Travel planning is a realistic task for evaluating the planning and tool-use abilities of LLM agents. However, existing benchmarks typically assume only a single user, thereby avoiding one of the most challenging aspects of real-world…

Computation and Language · Computer Science 2026-05-26 Xiang Cheng , Yulan Hu , Lulu Zheng , Zheng Pan , Xin Li , Yong Liu

Travel planning is a natural real-world task to test large language models' (LLMs) planning and tool-use abilities. Although prior work has studied LLM performance on travel planning, existing settings still differ from real-world needs,…

Artificial Intelligence · Computer Science 2026-04-22 Xiang Cheng , Yulan Hu , Xiangwen Zhang , Lu Xu , Lide Tan , Zheng Pan , Xin Li , Yong Liu

Tour itinerary planning and recommendation are challenging problems for tourists visiting unfamiliar cities. Many tour recommendation algorithms only consider factors such as the location and popularity of Points of Interest (POIs) but…

Information Retrieval · Computer Science 2022-12-29 Ngai Lam Ho , Kwan Hui Lim