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KBQA is a task that requires to answer questions by using semantic structured information in knowledge base. Previous work in this area has been restricted due to the lack of large semantic parsing dataset and the exponential growth of…

Computation and Language · Computer Science 2022-01-28 Meihao Fan , Lei Zhang , Siyao Xiao , Yuru Liang

Prior work on multilingual question answering has mostly focused on using large multilingual pre-trained language models (LM) to perform zero-shot language-wise learning: train a QA model on English and test on other languages. In this…

Computation and Language · Computer Science 2020-12-14 Mihaela Bornea , Lin Pan , Sara Rosenthal , Radu Florian , Avirup Sil

Users post numerous product-related questions on e-commerce platforms, affecting their purchase decisions. Product-related question answering (PQA) entails utilizing product-related resources to provide precise responses to users. We…

Computation and Language · Computer Science 2024-09-25 Yifei Yuan , Yang Deng , Anders Søgaard , Mohammad Aliannejadi

Recently, there has been a surge of interest in the NLP community on the use of pretrained Language Models (LMs) as Knowledge Bases (KBs). Researchers have shown that LMs trained on a sufficiently large (web) corpus will encode a…

Computation and Language · Computer Science 2022-04-14 Badr AlKhamissi , Millicent Li , Asli Celikyilmaz , Mona Diab , Marjan Ghazvininejad

Large Language Models (LLMs) have shown remarkable progress in medical question answering (QA), yet their effectiveness remains predominantly limited to English due to imbalanced multilingual training data and scarce medical resources for…

Existing question answering methods infer answers either from a knowledge base or from raw text. While knowledge base (KB) methods are good at answering compositional questions, their performance is often affected by the incompleteness of…

Computation and Language · Computer Science 2017-04-28 Rajarshi Das , Manzil Zaheer , Siva Reddy , Andrew McCallum

Knowledge base question answering (KBQA)is an important task in Natural Language Processing. Existing approaches face significant challenges including complex question understanding, necessity for reasoning, and lack of large end-to-end…

In the past years, Knowledge-Based Question Answering (KBQA), which aims to answer natural language questions using facts in a knowledge base, has been well developed. Existing approaches often assume a static knowledge base. However, the…

Computation and Language · Computer Science 2021-01-19 Yongqi Li , Wenjie Li , Liqiang Nie

Machine Reading Comprehension (MRC) for question answering (QA), which aims to answer a question given the relevant context passages, is an important way to test the ability of intelligence systems to understand human language.…

Computation and Language · Computer Science 2019-11-20 Di Jin , Shuyang Gao , Jiun-Yu Kao , Tagyoung Chung , Dilek Hakkani-tur

Cross-lingual Machine Reading Comprehension (xMRC) is challenging due to the lack of training data in low-resource languages. The recent approaches use training data only in a resource-rich language like English to fine-tune large-scale…

Machine Learning · Computer Science 2021-12-10 Nuo Chen , Linjun Shou , Min Gong , Jian Pei , Daxin Jiang

Question answering over knowledge graphs (KGQA) has evolved from simple single-fact questions to complex questions that require graph traversal and aggregation. We propose a novel approach for complex KGQA that uses unsupervised message…

Computation and Language · Computer Science 2019-08-20 Svitlana Vakulenko , Javier David Fernandez Garcia , Axel Polleres , Maarten de Rijke , Michael Cochez

This paper is on the problem of Knowledge-Based Visual Question Answering (KB-VQA). Recent works have emphasized the significance of incorporating both explicit (through external databases) and implicit (through LLMs) knowledge to answer…

Computer Vision and Pattern Recognition · Computer Science 2023-10-25 Alexandros Xenos , Themos Stafylakis , Ioannis Patras , Georgios Tzimiropoulos

While several benefits were realized for multilingual vision-language pretrained models, recent benchmarks across various tasks and languages showed poor cross-lingual generalisation when multilingually pre-trained vision-language models…

Computation and Language · Computer Science 2022-12-01 Farhad Nooralahzadeh , Rico Sennrich

Though the community has made great progress on Machine Reading Comprehension (MRC) task, most of the previous works are solving English-based MRC problems, and there are few efforts on other languages mainly due to the lack of large-scale…

Computation and Language · Computer Science 2019-11-05 Yiming Cui , Wanxiang Che , Ting Liu , Bing Qin , Shijin Wang , Guoping Hu

Question answering (QA) over knowledge bases (KBs) is challenging because of the diverse, essentially unbounded, types of reasoning patterns needed. However, we hypothesize in a large KB, reasoning patterns required to answer a query type…

Computation and Language · Computer Science 2022-06-22 Rajarshi Das , Ameya Godbole , Ankita Naik , Elliot Tower , Robin Jia , Manzil Zaheer , Hannaneh Hajishirzi , Andrew McCallum

Complex question answering over knowledge base (Complex KBQA) is challenging because it requires various compositional reasoning capabilities, such as multi-hop inference, attribute comparison, set operation. Existing benchmarks have some…

Computation and Language · Computer Science 2022-06-24 Shulin Cao , Jiaxin Shi , Liangming Pan , Lunyiu Nie , Yutong Xiang , Lei Hou , Juanzi Li , Bin He , Hanwang Zhang

Relational knowledge bases (KBs) are commonly used to represent world knowledge in machines. However, while advantageous for their high degree of precision and interpretability, KBs are usually organized according to manually-defined…

Computation and Language · Computer Science 2021-09-13 Tara Safavi , Danai Koutra

Large Language Models (LLMs) have demonstrated significant capabilities across numerous application domains. A key challenge is to keep these models updated with latest available information, which limits the true potential of these models…

Computation and Language · Computer Science 2024-09-20 Muhammad Asif Ali , Nawal Daftardar , Mutayyaba Waheed , Jianbin Qin , Di Wang

Large language models (LLMs) have demonstrated impressive impact in the field of natural language processing, but they still struggle with several issues regarding, such as completeness, timeliness, faithfulness and adaptability. While…

Computation and Language · Computer Science 2023-08-24 Xintao Wang , Qianwen Yang , Yongting Qiu , Jiaqing Liang , Qianyu He , Zhouhong Gu , Yanghua Xiao , Wei Wang

Knowledge-based machine translation (KBMT) systems have achieved excellent results in constrained domains, but have not yet scaled up to newspaper text. The reason is that knowledge resources (lexicons, grammar rules, world models) must be…

cmp-lg · Computer Science 2008-02-03 Kevin Knight , Steve K. Luk