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Tables extracted from web documents can be used to directly answer many web search queries. Previous works on question answering (QA) using web tables have focused on factoid queries, i.e., those answerable with a short string like person…

信息检索 · 计算机科学 2020-01-13 Kaushik Chakrabarti , Zhimin Chen , Siamak Shakeri , Guihong Cao

Existing open-domain dialog models are generally trained to minimize the perplexity of target human responses. However, some human replies are more engaging than others, spawning more followup interactions. Current conversational models are…

计算与语言 · 计算机科学 2020-09-16 Xiang Gao , Yizhe Zhang , Michel Galley , Chris Brockett , Bill Dolan

Knowledge base question answering (KBQA) is a challenging task that aims to retrieve correct answers from large-scale knowledge bases. Existing attempts primarily focus on entity representation and final answer reasoning, which results in…

计算与语言 · 计算机科学 2023-05-26 Yong Cao , Xianzhi Li , Huiwen Liu , Wen Dai , Shuai Chen , Bin Wang , Min Chen , Daniel Hershcovich

This paper introduces DataFrame question answering (QA), a novel task that utilizes large language models (LLMs) to generate Pandas queries for information retrieval and data analysis on dataframes, emphasizing safe and non-revealing data…

计算与语言 · 计算机科学 2024-01-30 Junyi Ye , Mengnan Du , Guiling Wang

Due to the concise and structured nature of tables, the knowledge contained therein may be incomplete or missing, posing a significant challenge for table question answering (TableQA) and data analysis systems. Most existing datasets either…

计算与语言 · 计算机科学 2024-05-15 Mengkang Hu , Haoyu Dong , Ping Luo , Shi Han , Dongmei Zhang

Dense retrievers for open-domain question answering (ODQA) have been shown to achieve impressive performance by training on large datasets of question-passage pairs. In this work we ask whether this dependence on labeled data can be reduced…

计算与语言 · 计算机科学 2022-05-18 Ori Ram , Gal Shachaf , Omer Levy , Jonathan Berant , Amir Globerson

Retrieval-based code question answering seeks to match user queries in natural language to relevant code snippets. Previous approaches typically rely on pretraining models using crafted bi-modal and uni-modal datasets to align text and code…

计算与语言 · 计算机科学 2024-03-26 Zehan Li , Jianfei Zhang , Chuantao Yin , Yuanxin Ouyang , Wenge Rong

Extracting hyper-relations is crucial for constructing comprehensive knowledge graphs, but there are limited supervised methods available for this task. To address this gap, we introduce a zero-shot prompt-based method using OpenAI's…

计算与语言 · 计算机科学 2024-03-19 Preetha Datta , Fedor Vitiugin , Anastasiia Chizhikova , Nitin Sawhney

Proprietary corporate documents contain rich domain-specific knowledge, but their overwhelming volume and disorganized structure make it difficult even for employees to access the right information when needed. For example, in the…

人工智能 · 计算机科学 2025-08-28 Nayoung Choi , Grace Byun , Andrew Chung , Ellie S. Paek , Shinsun Lee , Jinho D. Choi

Recent breakthroughs of pretrained language models have shown the effectiveness of self-supervised learning for a wide range of natural language processing (NLP) tasks. In addition to standard syntactic and semantic NLP tasks, pretrained…

计算与语言 · 计算机科学 2019-12-23 Wenhan Xiong , Jingfei Du , William Yang Wang , Veselin Stoyanov

Open Domain Question Answering requires systems to retrieve external knowledge and perform multi-hop reasoning by composing knowledge spread over multiple sentences. In the recently introduced open domain question answering challenge…

计算与语言 · 计算机科学 2020-04-20 Pratyay Banerjee , Chitta Baral

The problem of answering questions using knowledge from pre-trained language models (LMs) and knowledge graphs (KGs) presents two challenges: given a QA context (question and answer choice), methods need to (i) identify relevant knowledge…

计算与语言 · 计算机科学 2022-12-14 Michihiro Yasunaga , Hongyu Ren , Antoine Bosselut , Percy Liang , Jure Leskovec

Generative models for open domain question answering have proven to be competitive, without resorting to external knowledge. While promising, this approach requires to use models with billions of parameters, which are expensive to train and…

计算与语言 · 计算机科学 2021-02-04 Gautier Izacard , Edouard Grave

Text retrieval using learned dense representations has recently emerged as a promising alternative to "traditional" text retrieval using sparse bag-of-words representations. One recent work that has garnered much attention is the dense…

计算与语言 · 计算机科学 2021-04-14 Xueguang Ma , Kai Sun , Ronak Pradeep , Jimmy Lin

Although deep neural networks have achieved tremendous success for question answering (QA), they are still suffering from heavy computational and energy cost for real product deployment. Further, existing QA systems are bottlenecked by the…

计算与语言 · 计算机科学 2021-09-03 Yuwei Fang , Shuohang Wang , Zhe Gan , Siqi Sun , Jingjing Liu , Chenguang Zhu

Large language models such as Open AI's Generative Pre-trained Transformer (GPT) models are proficient at answering questions, but their knowledge is confined to the information present in their training data. This limitation renders them…

计算与语言 · 计算机科学 2023-08-24 Saba Rahimi , Tucker Balch , Manuela Veloso

Question Answering (QA) systems are becoming the inspiring model for the future of search engines. While recently, underlying datasets for QA systems have been promoted from unstructured datasets to structured datasets with highly…

Deep learning methods for Visual Place Recognition (VPR) have advanced significantly, largely driven by large-scale datasets. However, most existing approaches are trained on a single dataset, which can introduce dataset-specific inductive…

计算机视觉与模式识别 · 计算机科学 2026-03-10 Jiuhong Xiao , Yang Zhou , Giuseppe Loianno

Information seeking users often pose questions with false presuppositions, especially when asking about unfamiliar topics. Most existing question answering (QA) datasets, in contrast, assume all questions have well defined answers. We…

计算与语言 · 计算机科学 2022-12-01 Xinyan Velocity Yu , Sewon Min , Luke Zettlemoyer , Hannaneh Hajishirzi

Knowledge Graphs (KG) act as a great tool for holding distilled information from large natural language text corpora. The problem of natural language querying over knowledge graphs is essential for the human consumption of this information.…

机器学习 · 计算机科学 2021-12-22 Aayushee Gupta , K. M. Annervaz , Ambedkar Dukkipati , Shubhashis Sengupta