scholarly journals Deep Attention Diffusion Graph Neural Networks for Text Classification

2021 ◽  
Author(s):  
Yonghao Liu ◽  
Renchu Guan ◽  
Fausto Giunchiglia ◽  
Yanchun Liang ◽  
Xiaoyue Feng
Keyword(s):  
Neural Networks ◽  
Text Classification ◽  
Graph Neural Networks

Knowledge Graph Integrated Graph Neural Networks for Chinese Medical Text Classification

2021 ◽  
Author(s):  
Ge Lan ◽  
Ye Li ◽  
Mengting Hu ◽  
Yufei Sun ◽  
Yuzhi Zhang
Keyword(s):  
Neural Networks ◽  
Text Classification ◽  
Knowledge Graph ◽  
Medical Text ◽  
Graph Neural Networks

scholarly journals Message Passing Attention Networks for Document Understanding

2020 ◽  
Vol 34 (05) ◽  
pp. 8544-8551 ◽  
Author(s):  
Giannis Nikolentzos ◽  
Antoine Tixier ◽  
Michalis Vazirgiannis
Keyword(s):  
Neural Networks ◽  
Text Classification ◽  
Message Passing ◽  
State Of The Art ◽  
Structured Data ◽  
Attention Networks ◽  
Document Understanding ◽  
Standard Text ◽  
Graph Neural Networks ◽  
The Impact

Graph neural networks have recently emerged as a very effective framework for processing graph-structured data. These models have achieved state-of-the-art performance in many tasks. Most graph neural networks can be described in terms of message passing, vertex update, and readout functions. In this paper, we represent documents as word co-occurrence networks and propose an application of the message passing framework to NLP, the Message Passing Attention network for Document understanding (MPAD). We also propose several hierarchical variants of MPAD. Experiments conducted on 10 standard text classification datasets show that our architectures are competitive with the state-of-the-art. Ablation studies reveal further insights about the impact of the different components on performance. Code is publicly available at: https://github.com/giannisnik/mpad.

Label Incorporated Graph Neural Networks for Text Classification

2021 ◽  
Author(s):  
Yuan Xint ◽  
Linli Xu ◽  
Junliang Guo ◽  
Jiquan Li ◽  
Xin Sheng ◽  
...  
Keyword(s):  
Neural Networks ◽  
Text Classification ◽  
Graph Neural Networks

scholarly journals Contextualized Non-Local Neural Networks for Sequence Learning

2019 ◽  
Vol 33 ◽  
pp. 6762-6769 ◽  
Author(s):  
Pengfei Liu ◽  
Shuaichen Chang ◽  
Xuanjing Huang ◽  
Jian Tang ◽  
Jackie Chi Kit Cheung
Keyword(s):  
Neural Networks ◽  
Text Classification ◽  
Sequence Learning ◽  
Neural Mechanisms ◽  
Semantic Matching ◽  
Proposed Model ◽  
Non Local ◽  
Graph Neural Networks ◽  
Transformer Model ◽  
Dependency Structures

Recently, a large number of neural mechanisms and models have been proposed for sequence learning, of which selfattention, as exemplified by the Transformer model, and graph neural networks (GNNs) have attracted much attention. In this paper, we propose an approach that combines and draws on the complementary strengths of these two methods. Specifically, we propose contextualized non-local neural networks (CN3), which can both dynamically construct a task-specific structure of a sentence and leverage rich local dependencies within a particular neighbourhood.Experimental results on ten NLP tasks in text classification, semantic matching, and sequence labelling show that our proposed model outperforms competitive baselines and discovers task-specific dependency structures, thus providing better interpretability to users.

scholarly journals Learning Multi-Task Communication with Message Passing for Sequence Learning

2019 ◽  
Vol 33 ◽  
pp. 4360-4367 ◽  
Author(s):  
Pengfei Liu ◽  
Jie Fu ◽  
Yue Dong ◽  
Xipeng Qiu ◽  
Jackie Chi Kit Cheung
Keyword(s):  
Neural Networks ◽  
Transfer Learning ◽  
Text Classification ◽  
Sequence Learning ◽  
Message Passing ◽  
Ad Hoc ◽  
General Graph ◽  
Learning Framework ◽  
Task Learning ◽  
Graph Neural Networks

We present two architectures for multi-task learning with neural sequence models. Our approach allows the relationships between different tasks to be learned dynamically, rather than using an ad-hoc pre-defined structure as in previous work. We adopt the idea from message-passing graph neural networks, and propose a general graph multi-task learning framework in which different tasks can communicate with each other in an effective and interpretable way. We conduct extensive experiments in text classification and sequence labelling to evaluate our approach on multi-task learning and transfer learning. The empirical results show that our models not only outperform competitive baselines, but also learn interpretable and transferable patterns across tasks.

scholarly journals Every Document Owns Its Structure: Inductive Text Classification via Graph Neural Networks

2020 ◽  
Author(s):  
Yufeng Zhang ◽  
Xueli Yu ◽  
Zeyu Cui ◽  
Shu Wu ◽  
Zhongzhen Wen ◽  
...  
Keyword(s):  
Neural Networks ◽  
Text Classification ◽  
Graph Neural Networks

Graph Neural Networks for Prediction of Fuel Ignition Quality

2020 ◽  
Author(s):  
Artur Schweidtmann ◽  
Jan Rittig ◽  
Andrea König ◽  
Martin Grohe ◽  
Alexander Mitsos ◽  
...  
Keyword(s):  
Neural Networks ◽  
Octane Number ◽  
Molecular Graph ◽  
Chemical Properties ◽  
Graph Representation ◽  
Structure Property ◽  
Oxygenated Hydrocarbons ◽  
Physico Chemical ◽  
Ignition Quality ◽  
Graph Neural Networks

<div>Prediction of combustion-related properties of (oxygenated) hydrocarbons is an important and challenging task for which quantitative structure-property relationship (QSPR) models are frequently employed. Recently, a machine learning method, graph neural networks (GNNs), has shown promising results for the prediction of structure-property relationships. GNNs utilize a graph representation of molecules, where atoms correspond to nodes and bonds to edges containing information about the molecular structure. More specifically, GNNs learn physico-chemical properties as a function of the molecular graph in a supervised learning setup using a backpropagation algorithm. This end-to-end learning approach eliminates the need for selection of molecular descriptors or structural groups, as it learns optimal fingerprints through graph convolutions and maps the fingerprints to the physico-chemical properties by deep learning. We develop GNN models for predicting three fuel ignition quality indicators, i.e., the derived cetane number (DCN), the research octane number (RON), and the motor octane number (MON), of oxygenated and non-oxygenated hydrocarbons. In light of limited experimental data in the order of hundreds, we propose a combination of multi-task learning, transfer learning, and ensemble learning. The results show competitive performance of the proposed GNN approach compared to state-of-the-art QSPR models making it a promising field for future research. The prediction tool is available via a web front-end at www.avt.rwth-aachen.de/gnn.</div>

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