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The complex reasoning ability of Large Language Models (LLMs) poses a critical bottleneck for their practical applications. Test-time expansion methods such as Tree-of-Thought (ToT) and Graph-of-Thought (GoT) enhance reasoning by…

Computation and Language · Computer Science 2025-12-01 Yujiao Yang , Jing Lian , Linhui Li

We propose a multi-explanation graph attention network (MEGAN). Unlike existing graph explainability methods, our network can produce node and edge attributional explanations along multiple channels, the number of which is independent of…

Machine Learning · Computer Science 2024-02-20 Jonas Teufel , Luca Torresi , Patrick Reiser , Pascal Friederich

Recently, Graph Neural Networks (GNNs) have proven their effectiveness for recommender systems. Existing studies have applied GNNs to capture collaborative relations in the data. However, in real-world scenarios, the relations in a…

Information Retrieval · Computer Science 2021-11-30 Xiaohan Li , Zhiwei Liu , Stephen Guo , Zheng Liu , Hao Peng , Philip S. Yu , Kannan Achan

After a period of decrease, interest in word alignments is increasing again for their usefulness in domains such as typological research, cross-lingual annotation projection, and machine translation. Generally, alignment algorithms only use…

Computation and Language · Computer Science 2022-08-11 Ayyoob Imani , Lütfi Kerem Şenel , Masoud Jalili Sabet , François Yvon , Hinrich Schütze

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

This paper introduces Grounded Image Text Matching with Mismatched Relation (GITM-MR), a novel visual-linguistic joint task that evaluates the relation understanding capabilities of transformer-based pre-trained models. GITM-MR requires a…

Computer Vision and Pattern Recognition · Computer Science 2023-08-07 Yu Wu , Yana Wei , Haozhe Wang , Yongfei Liu , Sibei Yang , Xuming He

Constructing responses in task-oriented dialogue systems typically relies on information sources such the current dialogue state or external databases. This paper presents a novel approach to knowledge-grounded response generation that…

Computation and Language · Computer Science 2023-10-23 Nicholas Thomas Walker , Stefan Ultes , Pierre Lison

In this paper, we study the problem of question answering when reasoning over multiple facts is required. We propose Query-Reduction Network (QRN), a variant of Recurrent Neural Network (RNN) that effectively handles both short-term (local)…

Computation and Language · Computer Science 2017-02-28 Minjoon Seo , Sewon Min , Ali Farhadi , Hannaneh Hajishirzi

Many machine learning techniques have been proposed in the last few years to process data represented in graph-structured form. Graphs can be used to model several scenarios, from molecules and materials to RNA secondary structures. Several…

Machine Learning · Computer Science 2018-11-19 Nicolò Navarin , Dinh V. Tran , Alessandro Sperduti

Long text generation is an important but challenging task.The main problem lies in learning sentence-level semantic dependencies which traditional generative models often suffer from. To address this problem, we propose a Multi-hop…

Computation and Language · Computer Science 2020-09-29 Liang Zhao , Jingjing Xu , Junyang Lin , Yichang Zhang , Hongxia Yang , Xu Sun

Large language models (LLMs) often suffer from hallucination, generating factually incorrect statements when handling questions beyond their knowledge and perception. Retrieval-augmented generation (RAG) addresses this by retrieving…

Computation and Language · Computer Science 2025-11-18 Shengyuan Chen , Chuang Zhou , Zheng Yuan , Qinggang Zhang , Zeyang Cui , Hao Chen , Yilin Xiao , Jiannong Cao , Xiao Huang

This study proposed a knowledge graph entity extraction and relationship reasoning algorithm based on a graph neural network, using a graph convolutional network and graph attention network to model the complex structure in the knowledge…

Computation and Language · Computer Science 2024-11-26 Junliang Du , Guiran Liu , Jia Gao , Xiaoxuan Liao , Jiacheng Hu , Linxiao Wu

This work deals with the challenge of learning and reasoning over multi-hop question answering (QA). We propose a graph reasoning network based on the semantic structure of the sentences to learn cross paragraph reasoning paths and find the…

Computation and Language · Computer Science 2020-11-19 Chen Zheng , Parisa Kordjamshidi

Social relationships (e.g., friends, couple etc.) form the basis of the social network in our daily life. Automatically interpreting such relationships bears a great potential for the intelligent systems to understand human behavior in…

Computer Vision and Pattern Recognition · Computer Science 2018-07-03 Zhouxia Wang , Tianshui Chen , Jimmy Ren , Weihao Yu , Hui Cheng , Liang Lin

The era of data deluge has sparked the interest in graph-based learning methods in a number of disciplines such as sociology, biology, neuroscience, or engineering. In this paper, we introduce a graph recurrent neural network (GRNN) for…

Machine Learning · Computer Science 2019-02-19 Vassilis N. Ioannidis , Antonio G. Marques , Georgios B. Giannakis

We focus on a conversational question answering task which combines the challenges of understanding questions in context and reasoning over evidence gathered from heterogeneous sources like text, knowledge graphs, tables, and infoboxes. Our…

Computation and Language · Computer Science 2024-07-16 Parag Jain , Mirella Lapata

Conversational Machine Reading (CMR) aims at answering questions in a complicated manner. Machine needs to answer questions through interactions with users based on given rule document, user scenario and dialogue history, and ask questions…

Computation and Language · Computer Science 2021-06-01 Siru Ouyang , Zhuosheng Zhang , Hai Zhao

Question Answering over Knowledge Graph (KGQA) aims to seek answer entities for the natural language question from a large-scale Knowledge Graph~(KG). To better perform reasoning on KG, recent work typically adopts a pre-trained language…

Computation and Language · Computer Science 2024-01-02 Jinhao Jiang , Kun Zhou , Wayne Xin Zhao , Yaliang Li , Ji-Rong Wen

We present a novel graph neural network (GNN) architecture for retrieval-augmented generation (RAG) that leverages query-aware attention mechanisms and learned scoring heads to improve retrieval accuracy on complex, multi-hop questions.…

Information Retrieval · Computer Science 2025-08-11 Vibhor Agrawal , Fay Wang , Rishi Puri

Recent advances in pre-trained language models have significantly improved neural response generation. However, existing methods usually view the dialogue context as a linear sequence of tokens and learn to generate the next word through…

Computation and Language · Computer Science 2021-12-14 Xiaodong Gu , Kang Min Yoo , Jung-Woo Ha