Is Table Retrieval a Solved Problem? Join-Aware Multi-Table Retrieval

arXiv:2404.09889v1 Announce Type: cross
Abstract: Retrieving relevant tables containing the necessary information to accurately answer a given question over tables is critical to open-domain question-answering (QA) systems. Previous methods assume the answer to such a question can be found either in a single table or multiple tables identified through question decomposition or rewriting. However, neither of these approaches is sufficient, as many questions require retrieving multiple tables and joining them through a join plan that cannot be discerned from the …

abstract arxiv cs.ai cs.cl cs.ir domain found information join multiple question retrieval systems table tables through type