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Question answering over RDF data like knowledge graphs has been greatly advanced, with a number of good systems providing crisp answers for natural language questions or telegraphic queries. Some of these systems incorporate textual sources…

Information Retrieval · Computer Science 2024-09-24 Soumajit Pramanik , Jesujoba Alabi , Rishiraj Saha Roy , Gerhard Weikum

Recent video question answering benchmarks indicate that state-of-the-art models struggle to answer compositional questions. However, it remains unclear which types of compositional reasoning cause models to mispredict. Furthermore, it is…

Computer Vision and Pattern Recognition · Computer Science 2022-05-25 Mona Gandhi , Mustafa Omer Gul , Eva Prakash , Madeleine Grunde-McLaughlin , Ranjay Krishna , Maneesh Agrawala

We introduce graph pattern-based association rules (GPARs) for directed labeled multigraphs such as RDF graphs. GPARs support both generative tasks, where a graph is extended, and evaluative tasks, where the plausibility of a graph is…

Databases · Computer Science 2025-12-18 Basil Ell

Complex knowledge base question answering can be achieved by converting questions into sequences of predefined actions. However, there is a significant semantic and structural gap between natural language and action sequences, which makes…

Computation and Language · Computer Science 2022-12-27 Yechun Tang , Xiaoxia Cheng , Weiming Lu

In question-answering (QA) systems, Retrieval-Augmented Generation (RAG) has become pivotal in enhancing response accuracy and reducing hallucination issues. The architecture of RAG systems varies significantly, encompassing single-round…

Computation and Language · Computer Science 2025-08-05 Yiqun Chen , Erhan Zhang , Lingyong Yan , Shuaiqiang Wang , Jizhou Huang , Dawei Yin , Jiaxin Mao

In this document I present an approach to answer validation and reranking for question answering (QA) systems. A cased-based reasoning (CBR) system judges answer candidates for questions from annotated answer candidates for earlier…

Artificial Intelligence · Computer Science 2015-03-11 Karl-Heinz Weis

Recent advancements in retrieval-augmented generation (RAG) have enhanced large language models in question answering by integrating external knowledge. However, challenges persist in achieving global understanding and aligning responses…

Computation and Language · Computer Science 2025-06-24 Quanwei Tang , Sophia Yat Mei Lee , Junshuang Wu , Dong Zhang , Shoushan Li , Erik Cambria , Guodong Zhou

In this work, we propose a deep neural architecture that uses an attention mechanism which utilizes region based image features, the natural language question asked, and semantic knowledge extracted from the regions of an image to produce…

Computation and Language · Computer Science 2021-04-06 Tasmia Tasrin , Md Sultan Al Nahian , Brent Harrison

Sanskrit (sa\d{m}sk\d{r}ta) enjoys one of the largest and most varied literature in the whole world. Extracting the knowledge from it, however, is a challenging task due to multiple reasons including complexity of the language and paucity…

Computation and Language · Computer Science 2023-10-13 Hrishikesh Terdalkar , Arnab Bhattacharya

Software with natural-language user interfaces has an ever-increasing importance. However, the quality of the included Question Answering (QA) functionality is still not sufficient regarding the number of questions that are answered…

Information Retrieval · Computer Science 2021-12-13 Aleksandr Gashkov , Aleksandr Perevalov , Maria Eltsova , Andreas Both

Direct answering of questions that involve multiple entities and relations is a challenge for text-based QA. This problem is most pronounced when answers can be found only by joining evidence from multiple documents. Curated knowledge…

Information Retrieval · Computer Science 2020-12-01 Xiaolu Lu , Soumajit Pramanik , Rishiraj Saha Roy , Abdalghani Abujabal , Yafang Wang , Gerhard Weikum

Question Answering System (QAS) is used for information retrieval and natural language processing (NLP) to reduce human effort. There are numerous QAS based on the user documents present today, but they all are limited to providing…

Computation and Language · Computer Science 2017-01-02 Ahlam Ansari , Moonish Maknojia , Altamash Shaikh

Motivated by the incompleteness of modern knowledge graphs, a new setup for query answering has emerged, where the goal is to predict answers that do not necessarily appear in the knowledge graph, but are present in its completion. In this…

Machine Learning · Computer Science 2026-01-30 Krzysztof Olejniczak , Xingyue Huang , Mikhail Galkin , İsmail İlkan Ceylan

Recent literature highlights the potential of graph-based approaches within large language model (LLM) retrieval-augmented generation (RAG) pipelines for answering queries of varying complexity, particularly those that fall outside the…

Information Retrieval · Computer Science 2026-04-24 Isabela Iacob , Melisa Marian , Gheorghe Cosmin Silaghi

Question answering (QA) models for reading comprehension have achieved human-level accuracy on in-distribution test sets. However, they have been demonstrated to lack robustness to challenge sets, whose distribution is different from that…

Computation and Language · Computer Science 2021-06-07 Kazutoshi Shinoda , Saku Sugawara , Akiko Aizawa

Answering visual questions need acquire daily common knowledge and model the semantic connection among different parts in images, which is too difficult for VQA systems to learn from images with the only supervision from answers. Meanwhile,…

Computation and Language · Computer Science 2018-05-23 Jialin Wu , Zeyuan Hu , Raymond J. Mooney

Knowledge graphs (KGs) are of great importance to many real world applications, but they generally suffer from incomplete information in the form of missing relations between entities. Knowledge graph completion (also known as relation…

Machine Learning · Computer Science 2021-03-02 Zijun Cui , Pavan Kapanipathi , Kartik Talamadupula , Tian Gao , Qiang Ji

We introduce REALTIME QA, a dynamic question answering (QA) platform that announces questions and evaluates systems on a regular basis (weekly in this version). REALTIME QA inquires about the current world, and QA systems need to answer…

Computation and Language · Computer Science 2024-02-29 Jungo Kasai , Keisuke Sakaguchi , Yoichi Takahashi , Ronan Le Bras , Akari Asai , Xinyan Yu , Dragomir Radev , Noah A. Smith , Yejin Choi , Kentaro Inui

This paper presents a cost-sensitive active Question-Answering (QA) framework for learning a nine-layer And-Or graph (AOG) from web images. The AOG explicitly represents object categories, poses/viewpoints, parts, and detailed structures…

Computer Vision and Pattern Recognition · Computer Science 2019-01-09 Quanshi Zhang , Ying Nian Wu , Hao Zhang , Song-Chun Zhu

Despite end-to-end neural systems making significant progress in the last decade for task-oriented as well as chit-chat based dialogue systems, most dialogue systems rely on hybrid approaches which use a combination of rule-based, retrieval…

Computation and Language · Computer Science 2021-05-07 Ashish Shrivastava , Kaustubh Dhole , Abhinav Bhatt , Sharvani Raghunath