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Multi-hop Question Answering (QA) requires the machine to answer complex questions by finding scattering clues and reasoning from multiple documents. Graph Network (GN) and Question Decomposition (QD) are two common approaches at present.…

Computation and Language · Computer Science 2022-03-18 Jiawei Li , Mucheng Ren , Yang Gao , Yizhe Yang

Question Routing in Community-based Question Answering websites aims at recommending newly posted questions to potential users who are most likely to provide "accepted answers". Most of the existing approaches predict users' expertise based…

Social and Information Networks · Computer Science 2022-07-06 Vaibhav Krishna , Vaiva Vasiliauskaite , Nino Antulov-Fantulin

Question and answer (Q&A) platforms usually recommend question-answer pairs to meet users' knowledge acquisition needs, unlike traditional recommendations that recommend only one item. This makes user behaviors more complex, and presents…

Information Retrieval · Computer Science 2024-06-10 Changshuo Zhang , Teng Shi , Xiao Zhang , Yanping Zheng , Ruobing Xie , Qi Liu , Jun Xu , Ji-Rong Wen

Competency Questions (CQs) are widely used in ontology development by guiding, among others, the scoping and validation stages. However, very limited guidance exists for formulating CQs and assessing whether they are good CQs, leading to…

Artificial Intelligence · Computer Science 2024-12-19 C. Maria Keet , Zubeida Casmod Khan

A common thread of open-domain question answering (QA) models employs a retriever-reader pipeline that first retrieves a handful of relevant passages from Wikipedia and then peruses the passages to produce an answer. However, even…

Computation and Language · Computer Science 2022-10-11 Mingxuan Ju , Wenhao Yu , Tong Zhao , Chuxu Zhang , Yanfang Ye

Community Question Answering (CQA) platforms steadily gain popularity as they provide users with fast responses to their queries. The swiftness of these responses is contingent on a mixture of query-specific and user-related elements. This…

Social and Information Networks · Computer Science 2024-03-19 Rima Hazra , Agnik Saha , Somnath Banerjee , Animesh Mukherjee

Existing approaches for open-domain question answering (QA) are typically designed for questions that require either single-hop or multi-hop reasoning, which make strong assumptions of the complexity of questions to be answered. Also,…

Computation and Language · Computer Science 2021-05-25 Ping Nie , Yuyu Zhang , Arun Ramamurthy , Le Song

The challenge of answering graph queries over incomplete knowledge graphs is gaining significant attention in the machine learning community. Neuro-symbolic models have emerged as a promising approach, combining good performance with high…

Machine Learning · Computer Science 2024-06-06 Tamara Cucumides , Daniel Daza , Pablo Barceló , Michael Cochez , Floris Geerts , Juan L Reutter , Miguel Romero

Chart comprehension presents significant challenges for machine learning models due to the diverse and intricate shapes of charts. Existing multimodal methods often overlook these visual features or fail to integrate them effectively for…

Computation and Language · Computer Science 2024-08-01 Hanwen Zheng , Sijia Wang , Chris Thomas , Lifu Huang

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…

Computation and Language · Computer Science 2023-05-26 Yong Cao , Xianzhi Li , Huiwen Liu , Wen Dai , Shuai Chen , Bin Wang , Min Chen , Daniel Hershcovich

This research paper addresses the limitations of semantic search in complex enterprise document ecosystems. Traditional RAG pipelines often fail to capture hierarchical and interconnected information, leading to retrieval inaccuracies. We…

Information Retrieval · Computer Science 2026-04-17 Koushik Chakraborty , Koyel Guha

Clustering points in a vector space or nodes in a graph is a ubiquitous primitive in statistical data analysis, and it is commonly used for exploratory data analysis. In practice, it is often of interest to "refine" or "improve" a given…

Machine Learning · Computer Science 2022-02-03 K. Fountoulakis , M. Liu , D. F. Gleich , M. W. Mahoney

The conventional paradigm in neural question answering (QA) for narrative content is limited to a two-stage process: first, relevant text passages are retrieved and, subsequently, a neural network for machine comprehension extracts the…

Computation and Language · Computer Science 2019-08-13 Bernhard Kratzwald , Anna Eigenmann , Stefan Feuerriegel

The rapid evolution of communication technologies has led to an explosion of standards, rendering traditional expert-dependent consultation methods inefficient and slow. To address this challenge, we propose \textbf{KG2QA}, a question…

Computation and Language · Computer Science 2025-10-16 Zhongze Luo , Weixuan Wan , Tianya Zhang , Dan Wang , Xiaoying Tang

Complex question-answering (CQA) involves answering complex natural-language questions on a knowledge base (KB). However, the conventional neural program induction (NPI) approach exhibits uneven performance when the questions have different…

Computation and Language · Computer Science 2020-11-02 Yuncheng Hua , Yuan-Fang Li , Gholamreza Haffari , Guilin Qi , Tongtong Wu

Selecting the right compiler optimisations has a severe impact on programs' performance. Still, the available optimisations keep increasing, and their effect depends on the specific program, making the task human intractable. Researchers…

Distributed, Parallel, and Cluster Computing · Computer Science 2020-05-12 Stefano Cereda , Gianluca Palermo , Paolo Cremonesi , Stefano Doni

Natural language question answering (QA) over structured data sources such as tables and knowledge graphs have been widely investigated, especially with Large Language Models (LLMs) in recent years. The main solutions include question to…

Computation and Language · Computer Science 2024-12-16 Wen Zhang , Long Jin , Yushan Zhu , Jiaoyan Chen , Zhiwei Huang , Junjie Wang , Yin Hua , Lei Liang , Huajun Chen

Community Question-Answering (CQA) forums have revolutionized how people seek information, especially those related to their healthcare needs, placing their trust in the collective wisdom of the public. However, there can be several answers…

Computation and Language · Computer Science 2024-05-13 Rochana Chaturvedi , Abari Bhattacharya , Shweta Yadav

Co-branding has become a vital strategy for businesses aiming to expand market reach within recommendation systems. However, identifying effective cross-industry partnerships remains challenging due to resource imbalances, uncertain brand…

Machine Learning · Computer Science 2025-05-29 Xiangxiang Dai , Xiaowei Sun , Jinhang Zuo , Xutong Liu , John C. S. Lui

Estimation of the accuracy of a large-scale knowledge graph (KG) often requires humans to annotate samples from the graph. How to obtain statistically meaningful estimates for accuracy evaluation while keeping human annotation costs low is…

Databases · Computer Science 2019-07-24 Junyang Gao , Xian Li , Yifan Ethan Xu , Bunyamin Sisman , Xin Luna Dong , Jun Yang
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