TPTU-v2: Boosting Task Planning and Tool Usage of Large Language Model-based Agents in Real-world Systems.
CoRR(2023)
Abstract
Large Language Models (LLMs) have demonstrated proficiency in addressing
tasks that necessitate a combination of task planning and the usage of external
tools that require a blend of task planning and the utilization of external
tools, such as APIs. However, real-world complex systems present three
prevalent challenges concerning task planning and tool usage: (1) The real
system usually has a vast array of APIs, so it is impossible to feed the
descriptions of all APIs to the prompt of LLMs as the token length is limited;
(2) the real system is designed for handling complex tasks, and the base LLMs
can hardly plan a correct sub-task order and API-calling order for such tasks;
(3) Similar semantics and functionalities among APIs in real systems create
challenges for both LLMs and even humans in distinguishing between them. In
response, this paper introduces a comprehensive framework aimed at enhancing
the Task Planning and Tool Usage (TPTU) abilities of LLM-based agents operating
within real-world systems. Our framework comprises three key components
designed to address these challenges: (1) the API Retriever selects the most
pertinent APIs for the user task among the extensive array available; (2) LLM
Finetuner tunes a base LLM so that the finetuned LLM can be more capable for
task planning and API calling; (3) the Demo Selector adaptively retrieves
different demonstrations related to hard-to-distinguish APIs, which is further
used for in-context learning to boost the final performance. We validate our
methods using a real-world commercial system as well as an open-sourced
academic dataset, and the outcomes clearly showcase the efficacy of each
individual component as well as the integrated framework.
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