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Large Language Models (LLMs) and Knowledge Graphs (KGs) offer a promising approach to robust and explainable Question Answering (QA). While LLMs excel at natural language understanding, they suffer from knowledge gaps and hallucinations.…

Machine Learning · Computer Science 2025-04-15 Jasper Linders , Jakub M. Tomczak

Question and answer generation (QAG) consists of generating a set of question-answer pairs given a context (e.g. a paragraph). This task has a variety of applications, such as data augmentation for question answering (QA) models,…

Computation and Language · Computer Science 2023-05-29 Asahi Ushio , Fernando Alva-Manchego , Jose Camacho-Collados

Multi-hop question answering (MHQA) requires integrating knowledge scattered across multiple passages to derive the correct answer. Traditional retrieval-augmented generation (RAG) methods primarily focus on coarse-grained textual semantic…

Computation and Language · Computer Science 2025-08-18 Changjian Wang , Weihong Deng , Weili Guan , Quan Lu , Ning Jiang

Knowledge graphs are essential for numerous downstream natural language processing applications, but are typically incomplete with many facts missing. This results in research efforts on multi-hop reasoning task, which can be formulated as…

Artificial Intelligence · Computer Science 2021-09-03 Yao Zhang , Hongru Liang , Adam Jatowt , Wenqiang Lei , Xin Wei , Ning Jiang , Zhenglu Yang

Retrieval-Augmented Generation (RAG) over Knowledge Graphs (KGs) suffers from the fact that indexing approaches may lose important contextual nuance when text is reduced to triples, thereby degrading performance in downstream…

Computation and Language · Computer Science 2026-03-13 Riccardo Campi , Nicolò Oreste Pinciroli Vago , Mathyas Giudici , Marco Brambilla , Piero Fraternali

Knowledge graph (KG) question generation (QG) aims to generate natural language questions from KGs and target answers. Previous works mostly focus on a simple setting which is to generate questions from a single KG triple. In this work, we…

Computation and Language · Computer Science 2023-05-02 Yu Chen , Lingfei Wu , Mohammed J. Zaki

Multi-hop Question Generation (QG) effectively evaluates reasoning but remains confined to text; Video Question Generation (VideoQG) is limited to zero-hop questions over single segments. To address this, we introduce VideoChain, a novel…

Computer Vision and Pattern Recognition · Computer Science 2025-11-12 Arpan Phukan , Anupam Pandey , Deepjyoti Bodo , Asif Ekbal

Multi-hop logical reasoning is an established problem in the field of representation learning on knowledge graphs (KGs). It subsumes both one-hop link prediction as well as other more complex types of logical queries. Existing algorithms…

Artificial Intelligence · Computer Science 2022-09-07 Dimitrios Alivanistos , Max Berrendorf , Michael Cochez , Mikhail Galkin

Knowledge graph question answering is an important technology in intelligent human-robot interaction, which aims at automatically giving answer to human natural language question with the given knowledge graph. For the multi-relation…

Computation and Language · Computer Science 2021-06-04 Xinmeng Li , Mamoun Alazab , Qian Li , Keping Yu , Quanjun Yin

Multi-hop textual question answering requires combining information from multiple sentences. We focus on a natural setting where, unlike typical reading comprehension, only partial information is provided with each question. The model must…

Computation and Language · Computer Science 2019-09-23 Tushar Khot , Ashish Sabharwal , Peter Clark

Multi-hop reasoning is an effective approach for query answering (QA) over incomplete knowledge graphs (KGs). The problem can be formulated in a reinforcement learning (RL) setup, where a policy-based agent sequentially extends its…

Artificial Intelligence · Computer Science 2018-09-13 Xi Victoria Lin , Richard Socher , Caiming Xiong

Multi-hop Knowledge Base Question Answering(KBQA) aims to find the answer entity in a knowledge graph (KG), which requires multiple steps of reasoning. Existing retrieval-based approaches solve this task by concentrating on the specific…

Computation and Language · Computer Science 2023-12-20 Haowei Du , Quzhe Huang , Chen Li , Chen Zhang , Yang Li , Dongyan Zhao

In response to the increasing use of interactive artificial intelligence, the demand for the capacity to handle complex questions has increased. Multi-hop question generation aims to generate complex questions that requires multi-step…

Computation and Language · Computer Science 2024-04-02 Seonjeong Hwang , Yunsu Kim , Gary Geunbae Lee

Question answering (QA) models for reading comprehension have been demonstrated to exploit unintended dataset biases such as question-context lexical overlap. This hinders QA models from generalizing to under-represented samples such as…

Computation and Language · Computer Science 2021-09-24 Kazutoshi Shinoda , Saku Sugawara , Akiko Aizawa

Multi-hop question answering (QA) is a challenging task requiring QA systems to perform complex reasoning over multiple documents and provide supporting facts together with the exact answer. Existing works tend to utilize graph-based…

Computation and Language · Computer Science 2022-05-25 Xin-Yi Li , Wei-Jun Lei , Yu-Bin Yang

One strategy for facilitating reading comprehension is to present information in a question-and-answer format. We demo a system that integrates the tasks of question answering (QA) and question generation (QG) in order to produce Q&A items…

Computation and Language · Computer Science 2021-03-08 Melissa Roemmele , Deep Sidhpura , Steve DeNeefe , Ling Tsou

Asking good questions is an essential ability for both human and machine intelligence. However, existing neural question generation approaches mainly focus on the short factoid type of answers. In this paper, we propose a neural question…

Computation and Language · Computer Science 2022-06-01 Lidiya Murakhovs'ka , Chien-Sheng Wu , Philippe Laban , Tong Niu , Wenhao Liu , Caiming Xiong

Text-based question answering (TBQA) has been studied extensively in recent years. Most existing approaches focus on finding the answer to a question within a single paragraph. However, many difficult questions require multiple supporting…

Computation and Language · Computer Science 2019-06-07 Yunxuan Xiao , Yanru Qu , Lin Qiu , Hao Zhou , Lei Li , Weinan Zhang , Yong Yu

Question-driven summarization has been recently studied as an effective approach to summarizing the source document to produce concise but informative answers for non-factoid questions. In this work, we propose a novel question-driven…

Computation and Language · Computer Science 2020-10-09 Yang Deng , Wenxuan Zhang , Wai Lam

Despite recent advances in large language models (LLMs), most QA benchmarks are still confined to single-paragraph or single-document settings, failing to capture the complexity of real-world information-seeking tasks. Practical QA often…

Computation and Language · Computer Science 2025-08-25 Jiwon Park , Seohyun Pyeon , Jinwoo Kim , Rina Carines Cabal , Yihao Ding , Soyeon Caren Han