TST: A Schema-Based Top-Down and Dynamic-Aware Agent of Text-to-Table Tasks

As a bridge between natural texts and information systems like structured storage, statistical analysis, retrieving, and recommendation, the text-to-table task has received widespread attention recently. Existing researches have gone through a paradigm shift from traditional bottom-up IE (Information Extraction) to topdown LLMs-based question answering with RAG (Retrieval-Augmented Generation). Furthermore, these methods mainly adopt end-toend models or use multi-stage pipelines to extract text content based on static table structures. However, they neglect to deal with precise inner-document evidence extraction and dynamic information such as multiple entities and events, which can not be defined in static table head format and are very common in natural texts. To address this issue, we propose a two-stage dynamic content extraction agent framework called TST (Text-Schema-Table ), which uses type recognition methods to extract context evidences with the conduction of domain schema sequentially. Based on the evidence, firstly we quantify the total instances of each dynamic object and then extract them with ordered numerical prompts. Through extensive comparisons with existing methods across different datasets, our extraction framework exhibits state-of-the-art (SOTA) performance. Our codes are available at https://github. com/jiangpw41/TST . How many defendants? Agent Counter Agent Extractor What's the name of the first defendant ? What's the name of the second defendant ? What was stolen the first time ? ......