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Knowledge retrieval and reasoning are two key stages in multi-hop question answering (QA) at web scale. Existing approaches suffer from low confidence when retrieving evidence facts to fill the knowledge gap and lack transparent reasoning…

Computation and Language · Computer Science 2021-05-26 Weiwen Xu , Huihui Zhang , Deng Cai , Wai Lam

This work considers the task of representation learning on the attributed relational graph (ARG). Both the nodes and edges in an ARG are associated with attributes/features allowing ARGs to encode rich structural information widely observed…

Machine Learning · Computer Science 2022-08-10 Yifei Wang , Shiyang Chen , Guobin Chen , Ethan Shurberg , Hang Liu , Pengyu Hong

Large language models have evolved to process multiple modalities beyond text, such as images and audio, which motivates us to explore how to effectively leverage them for graph reasoning tasks. The key question, therefore, is how to…

In this paper, we propose a new model to learn Adaptive Kernel-based Representations (AKBR) for graph classification. Unlike state-of-the-art R-convolution graph kernels that are defined by merely counting any pair of isomorphic…

Machine Learning · Computer Science 2024-08-14 Feifei Qian , Lixin Cui , Ming Li , Yue Wang , Hangyuan Du , Lixiang Xu , Lu Bai , Philip S. Yu , Edwin R. Hancock

Large Language Models (LLMs) are powerful candidates for complex decision-making, leveraging vast encoded knowledge and remarkable zero-shot abilities. However, their adoption in high-stakes environments is hindered by their opacity; their…

Artificial Intelligence · Computer Science 2026-01-12 Sahil Wadhwa , Himanshu Kumar , Guanqun Yang , Abbaas Alif Mohamed Nishar , Pranab Mohanty , Swapnil Shinde , Yue Wu

Graphical models capture relations between entities in a wide range of applications including social networks, biology, and natural language processing, among others. Graph neural networks (GNN) are neural models that operate over graphs,…

Machine Learning · Computer Science 2024-02-08 Xu Zheng , Farhad Shirani , Tianchun Wang , Shouwei Gao , Wenqian Dong , Wei Cheng , Dongsheng Luo

This paper presents an algebraic theory of instruction sequences with instructions for a random access machine (RAM) as basic instructions, the behaviours produced by the instruction sequences concerned under execution, and the interaction…

Programming Languages · Computer Science 2023-01-26 C. A. Middelburg

Multimodal learning combines multiple data modalities, broadening the types and complexity of data our models can utilize: for example, from plain text to image-caption pairs. Most multimodal learning algorithms focus on modeling simple…

Artificial Intelligence · Computer Science 2023-10-13 Minji Yoon , Jing Yu Koh , Bryan Hooi , Ruslan Salakhutdinov

Large Language Models (LLMs) have achieved great success in various reasoning tasks. In this work, we focus on the graph reasoning ability of LLMs. Although theoretical studies proved that LLMs are capable of handling graph reasoning tasks,…

Computation and Language · Computer Science 2025-01-09 Xinnan Dai , Qihao Wen , Yifei Shen , Hongzhi Wen , Dongsheng Li , Jiliang Tang , Caihua Shan

Learning to perform abstract reasoning often requires decomposing the task in question into intermediate subgoals that are not specified upfront, but need to be autonomously devised by the learner. In Raven Progressive Matrices (RPM), the…

Artificial Intelligence · Computer Science 2024-03-08 Jakub Kwiatkowski , Krzysztof Krawiec

Context: Edge graphs are graphs whose edges are labelled with identifiers, and nodes can have multiple edges between them. They are used to model a wide range of systems, including networks with distances or degrees of connection and…

Programming Languages · Computer Science 2024-03-05 Jack Liell-Cock , Tom Schrijvers

Program source code contains complex structure information, which can be represented in structured data forms like trees or graphs. To acquire the structural information in source code, most existing researches use abstract syntax trees…

Software Engineering · Computer Science 2022-04-13 Kechi Zhang , Wenhan Wang , Huangzhao Zhang , Ge Li , Zhi Jin

Like conventional software projects, projects in model-driven software engineering require adequate management of multiple versions of development artifacts, importantly allowing living with temporary inconsistencies. In previous work,…

Software Engineering · Computer Science 2023-07-10 Matthias Barkowsky , Holger Giese

Many interesting examples of operator algebras, both self-adjoint and non-self-adjoint, can be constructed from directed graphs. In this survey, we overview the construction of $C^*$-algebras from directed graphs and from two…

Operator Algebras · Mathematics 2022-09-07 Juliana Bukoski , Sushil Singla

As Abstract Meaning Representation (AMR) implicitly involves compound semantic annotations, we hypothesize auxiliary tasks which are semantically or formally related can better enhance AMR parsing. We find that 1) Semantic role labeling…

Computation and Language · Computer Science 2022-04-21 Liang Chen , Peiyi Wang , Runxin Xu , Tianyu Liu , Zhifang Sui , Baobao Chang

AM dependency parsing is a method for neural semantic graph parsing that exploits the principle of compositionality. While AM dependency parsers have been shown to be fast and accurate across several graphbanks, they require explicit…

Computation and Language · Computer Science 2021-06-09 Jonas Groschwitz , Meaghan Fowlie , Alexander Koller

With an ever increasing size of text present on the Internet, automatic summary generation remains an important problem for natural language understanding. In this work we explore a novel full-fledged pipeline for text summarization with an…

Computation and Language · Computer Science 2017-07-19 Shibhansh Dohare , Harish Karnick , Vivek Gupta

The Sentence-State LSTM (S-LSTM) is a powerful and high efficient graph recurrent network, which views words as nodes and performs layer-wise recurrent steps between them simultaneously. Despite its successes on text representations, the…

Computation and Language · Computer Science 2020-03-03 Yijin Liu , Fandong Meng , Yufeng Chen , Jinan Xu , Jie Zhou

Graph self-supervised learning has gained increasing attention due to its capacity to learn expressive node representations. Many pretext tasks, or loss functions have been designed from distinct perspectives. However, we observe that…

Machine Learning · Computer Science 2022-03-23 Wei Jin , Xiaorui Liu , Xiangyu Zhao , Yao Ma , Neil Shah , Jiliang Tang

We argue that Transformers are essentially graph-to-graph models, with sequences just being a special case. Attention weights are functionally equivalent to graph edges. Our Graph-to-Graph Transformer architecture makes this ability…

Computation and Language · Computer Science 2023-10-30 James Henderson , Alireza Mohammadshahi , Andrei C. Coman , Lesly Miculicich