LSTM vs. BM25 for Open-domain QA

Open-domain textual question answering (QA), which aims to answer questions from large data sources like Wikipedia or the web, has gained wide attention in recent years. Recent advancements in open-domain textual QA are mainly due to the significant developments of deep learning techniques, especially machine reading comprehension and neural-network-based information retrieval, which allows the models to continuously refresh state-of-the-art performances. However, a comprehensive review of existing approaches and recent trends is lacked in this field. To address this issue, we present a thorough survey to explicitly give the task scope of open-domain textual QA, overview recent key advancements on deep learning based open-domain textual QA, illustrate the models and acceleration methods in detail, and introduce open-domain textual QA datasets and evaluation metrics. Finally, we summary the models, discuss the limitations of existing works and potential future research directions. INDEX TERMSOpen-domain textual question answering, deep learning, machine reading comprehension, information retrieval.

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LSTM vs. BM25 for Open-domain QA

Cited by 3 publications

References 2 publications

Open-Domain Textual Question Answering Systems

Open-Domain Textual Question Answering Systems

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