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More recently, Bidirectional Encoder Representations from Transformers (BERT) was proposed and has achieved impressive success on many natural language processing (NLP) tasks such as question answering and language understanding, due mainly…

Computation and Language · Computer Science 2021-04-13 Shih-Hsuan Chiu , Berlin Chen

Existing Graph Neural Networks (GNNs) compute the message exchange between nodes by either aggregating uniformly (convolving) the features of all the neighboring nodes, or by applying a non-uniform score (attending) to the features. Recent…

Machine Learning · Computer Science 2023-03-02 Adrián Javaloy , Pablo Sanchez-Martin , Amit Levi , Isabel Valera

Graph Convolutional Networks (GCNs) have gained great popularity in tackling various analytics tasks on graph and network data. However, some recent studies raise concerns about whether GCNs can optimally integrate node features and…

Machine Learning · Computer Science 2020-07-14 Xiao Wang , Meiqi Zhu , Deyu Bo , Peng Cui , Chuan Shi , Jian Pei

In this work, we propose BertGCN, a model that combines large scale pretraining and transductive learning for text classification. BertGCN constructs a heterogeneous graph over the dataset and represents documents as nodes using BERT…

Computation and Language · Computer Science 2022-03-22 Yuxiao Lin , Yuxian Meng , Xiaofei Sun , Qinghong Han , Kun Kuang , Jiwei Li , Fei Wu

Traditional approaches to semantic communication tasks rely on the knowledge of the signal-to-noise ratio (SNR) to mitigate channel noise. Moreover, these methods necessitate training under specific SNR conditions, entailing considerable…

Machine Learning · Computer Science 2024-09-24 Chunhang Zheng , Kechao Cai

Semantic role labeling (SRL) is the task of identifying the predicate-argument structure of a sentence. It is typically regarded as an important step in the standard NLP pipeline. As the semantic representations are closely related to…

Computation and Language · Computer Science 2017-08-01 Diego Marcheggiani , Ivan Titov

Social media processing is a fundamental task in natural language processing with numerous applications. As Vietnamese social media and information science have grown rapidly, the necessity of information-based mining on Vietnamese social…

Computation and Language · Computer Science 2023-09-07 Chau-Thang Phan , Quoc-Nam Nguyen , Chi-Thanh Dang , Trong-Hop Do , Kiet Van Nguyen

Grammatical error correction (GEC) is an important NLP task that is currently usually solved with autoregressive sequence-to-sequence models. However, approaches of this class are inherently slow due to one-by-one token generation, so…

Computation and Language · Computer Science 2023-11-15 Konstantin Yakovlev , Alexander Podolskiy , Andrey Bout , Sergey Nikolenko , Irina Piontkovskaya

Synthesizing medical images, such as PET, is a challenging task due to the fact that the intensity range is much wider and denser than those in photographs and digital renderings and are often heavily biased toward zero. Above all,…

In this work, we have proposed an approach for improving the GCN for predicting ratings in social networks. Our model is expanded from the standard model with several layers of transformer architecture. The main focus of the paper is on the…

Machine Learning · Computer Science 2024-01-15 Thi Linh Hoang , Tuan Dung Pham , Viet Cuong Ta

Graph neural networks (GNNs) are powerful models that have been successful in various graph representation learning tasks. Whereas gradient boosted decision trees (GBDT) often outperform other machine learning methods when faced with…

Machine Learning · Computer Science 2021-04-01 Sergei Ivanov , Liudmila Prokhorenkova

Due to their inherent capability in semantic alignment of aspects and their context words, attention mechanism and Convolutional Neural Networks (CNNs) are widely applied for aspect-based sentiment classification. However, these models lack…

Computation and Language · Computer Science 2019-10-15 Chen Zhang , Qiuchi Li , Dawei Song

Current grammatical error correction (GEC) models typically consider the task as sequence generation, which requires large amounts of annotated data and limit the applications in data-limited settings. We try to incorporate contextual…

Computation and Language · Computer Science 2020-01-13 Yiyuan Li , Antonios Anastasopoulos , Alan W Black

We present Bi-Level Attention-Based Relational Graph Convolutional Networks (BR-GCN), unique neural network architectures that utilize masked self-attentional layers with relational graph convolutions, to effectively operate on highly…

Machine Learning · Computer Science 2024-04-16 Roshni G. Iyer , Wei Wang , Yizhou Sun

Medication recommendation is an important healthcare application. It is commonly formulated as a temporal prediction task. Hence, most existing works only utilize longitudinal electronic health records (EHRs) from a small number of patients…

Artificial Intelligence · Computer Science 2019-11-28 Junyuan Shang , Tengfei Ma , Cao Xiao , Jimeng Sun

This study addresses the challenge of detecting semantic column types in relational tables, a key task in many real-world applications. While language models like BERT have improved prediction accuracy, their token input constraints limit…

Machine Learning · Computer Science 2024-05-02 Ehsan Hoseinzade , Ke Wang

Network topology excels at structural predictions but fails to capture functional semantics encoded in biomedical literature. We present RAG-GNN, an end-to-end trainable retrieval-augmented graph neural network framework that integrates GNN…

Molecular Networks · Quantitative Biology 2026-05-14 Hasi Hays , William J. Richardson

The dominant approaches for named entity recognition (NER) mostly adopt complex recurrent neural networks (RNN), e.g., long-short-term-memory (LSTM). However, RNNs are limited by their recurrent nature in terms of computational efficiency.…

Computation and Language · Computer Science 2019-07-22 Hui Chen , Zijia Lin , Guiguang Ding , Jianguang Lou , Yusen Zhang , Borje Karlsson

Graph convolutional networks (GCNs) allow to apply traditional convolution operations in non-Euclidean domains, where data are commonly modelled as irregular graphs. Medical imaging and, in particular, neuroscience studies often rely on…

Computer Vision and Pattern Recognition · Computer Science 2018-06-06 Salim Arslan , Sofia Ira Ktena , Ben Glocker , Daniel Rueckert

Graph Convolutional Networks (GCNs) have recently been shown to be quite successful in modeling graph-structured data. However, the primary focus has been on handling simple undirected graphs. Multi-relational graphs are a more general and…

Machine Learning · Computer Science 2020-01-22 Shikhar Vashishth , Soumya Sanyal , Vikram Nitin , Partha Talukdar