Search Results for author: Aijun An

Found 21 papers, 3 papers with code

A Survey on Graph Representation Learning Methods

no code implementations4 Apr 2022 Shima Khoshraftar, Aijun An

This is especially important because the quality of the graph representation vectors will affect the performance of these vectors in downstream tasks such as node classification, link prediction and anomaly detection.

Anomaly Detection Graph Embedding +4

Extending Isolation Forest for Anomaly Detection in Big Data via K-Means

no code implementations27 Apr 2021 Md Tahmid Rahman Laskar, Jimmy Huang, Vladan Smetana, Chris Stewart, Kees Pouw, Aijun An, Stephen Chan, Lei Liu

Moreover, we evaluate our proposed model on the live streaming data and find that our proposed system can be used for real-time anomaly detection in the industrial setup.

Anomaly Detection Intrusion Detection

Affective and Contextual Embedding for Sarcasm Detection

1 code implementation COLING 2020 Nastaran Babanejad, Heidar Davoudi, Aijun An, Manos Papagelis

To the best of our knowledge, this is the first attempt to directly alter BERT{'}s architecture and train it from scratch to build a sarcasm classifier.

Sarcasm Detection Word Embeddings

A Comprehensive Analysis of Preprocessing for Word Representation Learning in Affective Tasks

no code implementations ACL 2020 Nastaran Babanejad, Ameeta Agrawal, Aijun An, Manos Papagelis

Affective tasks such as sentiment analysis, emotion classification, and sarcasm detection have been popular in recent years due to an abundance of user-generated data, accurate computational linguistic models, and a broad range of relevant applications in various domains.

Emotion Classification Representation Learning +2

Adaptive Momentum Coefficient for Neural Network Optimization

1 code implementation4 Jun 2020 Zana Rashidi, Kasra Ahmadi K. A., Aijun An, Xiaogang Wang

We propose a novel and efficient momentum-based first-order algorithm for optimizing neural networks which uses an adaptive coefficient for the momentum term.

Elastic Bulk Synchronous Parallel Model for Distributed Deep Learning

no code implementations6 Jan 2020 Xing Zhao, Manos Papagelis, Aijun An, Bao Xin Chen, Junfeng Liu, Yonggang Hu

To ameliorate this shortcoming of classic BSP, we propose ELASTICBSP a model that aims to relax its strict synchronization requirement.

Learning to Determine the Quality of News Headlines

no code implementations26 Nov 2019 Amin Omidvar, Hossein Poormodheji, Aijun An, Gordon Edall

Then, we use soft target distribution of the calculated quality indicators to train our proposed deep learning model which can predict the quality of unpublished news headlines.

Dynamic Graph Embedding via LSTM History Tracking

no code implementations5 Nov 2019 Shima Khoshraftar, Sedigheh Mahdavi, Aijun An, Yonggang Hu, Junfeng Liu

To handle large dynamic networks in downstream applications such as link prediction and anomaly detection, it is essential for such networks to be transferred into a low dimensional space.

Anomaly Detection Dynamic graph embedding +3

Dynamic Joint Variational Graph Autoencoders

no code implementations4 Oct 2019 Sedigheh Mahdavi, Shima Khoshraftar, Aijun An

Learning network representations is a fundamental task for many graph applications such as link prediction, node classification, graph clustering, and graph visualization.

Clustering Graph Clustering +4

Dynamic Stale Synchronous Parallel Distributed Training for Deep Learning

no code implementations16 Aug 2019 Xing Zhao, Aijun An, Junfeng Liu, Bao Xin Chen

In this paper, we present a distributed paradigm on the parameter server framework called Dynamic Stale Synchronous Parallel (DSSP) which improves the state-of-the-art Stale Synchronous Parallel (SSP) paradigm by dynamically determining the staleness threshold at the run time.

Content-based Dwell Time Engagement Prediction Model for News Articles

no code implementations NAACL 2019 Heidar Davoudi, Aijun An, Gordon Edall

The article dwell time (i. e., expected time that users spend on an article) is among the most important factors showing the article engagement.

Learning Emotion-enriched Word Representations

no code implementations COLING 2018 Ameeta Agrawal, Aijun An, Manos Papagelis

As a consequence, emotionally dissimilar words, such as {``}happy{''} and {``}sad{''} occurring in similar contexts would purport more similar meaning than emotionally similar words, such as {``}happy{''} and {``}joy{''}.

Emotion Classification General Classification +3

Using Neural Network for Identifying Clickbaits in Online News Media

2 code implementations20 Jun 2018 Amin Omidvar, Hui Jiang, Aijun An

Online news media sometimes use misleading headlines to lure users to open the news article.

Clickbait Detection

Spontaneous Symmetry Breaking in Deep Neural Networks

no code implementations ICLR 2018 Ricky Fok, Aijun An, Xiaogang Wang

In the layer decoupling limit applicable to residual networks (He et al., 2015), we show that the remnant symmetries that survive the non-linear layers are spontaneously broken based on empirical results.

Decoupling the Layers in Residual Networks

no code implementations ICLR 2018 Ricky Fok, Aijun An, Zana Rashidi, Xiaogang Wang

We propose a Warped Residual Network (WarpNet) using a parallelizable warp operator for forward and backward propagation to distant layers that trains faster than the original residual neural network.

Spontaneous Symmetry Breaking in Neural Networks

no code implementations17 Oct 2017 Ricky Fok, Aijun An, Xiaogang Wang

We propose a framework to understand the unprecedented performance and robustness of deep neural networks using field theory.

Optimization assisted MCMC

no code implementations9 Sep 2017 Ricky Fok, Aijun An, Xiaogang Wang

The global optimization method first reduces a high dimensional search to an one dimensional geodesic to find a starting point close to a local mode.

Selective Co-occurrences for Word-Emotion Association

no code implementations COLING 2016 Ameeta Agrawal, Aijun An

Emotion classification from text typically requires some degree of word-emotion association, either gathered from pre-existing emotion lexicons or calculated using some measure of semantic relatedness.

Emotion Classification Emotion Recognition +1

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