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Autores principales: de la Rosa, Tomas, Gopalakrishnan, Sriram, Pozanco, Alberto, Zeng, Zhen, Borrajo, Daniel
Formato: Preprint
Publicado: 2024
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Acceso en línea:https://arxiv.org/abs/2406.10196
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author de la Rosa, Tomas
Gopalakrishnan, Sriram
Pozanco, Alberto
Zeng, Zhen
Borrajo, Daniel
author_facet de la Rosa, Tomas
Gopalakrishnan, Sriram
Pozanco, Alberto
Zeng, Zhen
Borrajo, Daniel
contents 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 formal language, extracting relevant travel information from web sources, and use an adequate problem solver to generate a valid solution. As an alternative, recent Large Language Model (LLM) based approaches directly output plans from user requests using language. Although LLMs possess extensive travel domain knowledge and provide high-level information like points of interest and potential routes, current state-of-the-art models often generate plans that lack coherence, fail to satisfy constraints fully, and do not guarantee the generation of high-quality solutions. We propose TRIP-PAL, a hybrid method that combines the strengths of LLMs and automated planners, where (i) LLMs get and translate travel information and user information into data structures that can be fed into planners; and (ii) automated planners generate travel plans that guarantee constraint satisfaction and optimize for users' utility. Our experiments across various travel scenarios show that TRIP-PAL outperforms an LLM when generating travel plans.
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spellingShingle TRIP-PAL: Travel Planning with Guarantees by Combining Large Language Models and Automated Planners
de la Rosa, Tomas
Gopalakrishnan, Sriram
Pozanco, Alberto
Zeng, Zhen
Borrajo, Daniel
Artificial Intelligence
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 formal language, extracting relevant travel information from web sources, and use an adequate problem solver to generate a valid solution. As an alternative, recent Large Language Model (LLM) based approaches directly output plans from user requests using language. Although LLMs possess extensive travel domain knowledge and provide high-level information like points of interest and potential routes, current state-of-the-art models often generate plans that lack coherence, fail to satisfy constraints fully, and do not guarantee the generation of high-quality solutions. We propose TRIP-PAL, a hybrid method that combines the strengths of LLMs and automated planners, where (i) LLMs get and translate travel information and user information into data structures that can be fed into planners; and (ii) automated planners generate travel plans that guarantee constraint satisfaction and optimize for users' utility. Our experiments across various travel scenarios show that TRIP-PAL outperforms an LLM when generating travel plans.
title TRIP-PAL: Travel Planning with Guarantees by Combining Large Language Models and Automated Planners
topic Artificial Intelligence
url https://arxiv.org/abs/2406.10196