Search Results for author: Ruihai Dong

Found 20 papers, 9 papers with code

Can We Transfer Noise Patterns? A Multi-environment Spectrum Analysis Model Using Generated Cases

1 code implementation2 Aug 2023 Haiwen Du, Zheng Ju, Yu An, Honghui Du, Dongjie Zhu, Zhaoshuo Tian, Aonghus Lawlor, Ruihai Dong

To make the analysis model applicable to more environments, we propose a noise patterns transferring model, which takes the spectrum of standard water samples in different environments as cases and learns the differences in their noise patterns, thus enabling noise patterns to transfer to unknown samples.

Denoising

Going Beyond Local: Global Graph-Enhanced Personalized News Recommendations

1 code implementation13 Jul 2023 Boming Yang, Dairui Liu, Toyotaro Suzumura, Ruihai Dong, Irene Li

Precisely recommending candidate news articles to users has always been a core challenge for personalized news recommendation systems.

News Recommendation Recommendation Systems

Topic-Centric Explanations for News Recommendation

1 code implementation13 Jun 2023 Dairui Liu, Derek Greene, Irene Li, Xuefei Jiang, Ruihai Dong

News recommender systems (NRS) have been widely applied for online news websites to help users find relevant articles based on their interests.

Explainable Recommendation News Recommendation +1

Enhancing Topic Extraction in Recommender Systems with Entropy Regularization

no code implementations12 Jun 2023 Xuefei Jiang, Dairui Liu, Ruihai Dong

In recent years, many recommender systems have utilized textual data for topic extraction to enhance interpretability.

Recommendation Systems Word Embeddings

Learning to Generalize for Cross-domain QA

1 code implementation14 May 2023 Yingjie Niu, Linyi Yang, Ruihai Dong, Yue Zhang

Our method has been theoretically and empirically shown to be effective in enhancing the generalization ability of both generative and discriminative models.

Data Augmentation Domain Generalization +1

Industry Classification Using a Novel Financial Time-Series Case Representation

no code implementations29 Apr 2023 Rian Dolphin, Barry Smyth, Ruihai Dong

We discuss why time-series data can present some significant representational challenges for conventional case-based reasoning approaches, and in response, we propose a novel representation based on stock returns embeddings, which can be readily calculated from raw stock returns data.

Classification Time Series

A Multimodal Embedding-Based Approach to Industry Classification in Financial Markets

no code implementations11 Nov 2022 Rian Dolphin, Barry Smyth, Ruihai Dong

Industry classification schemes provide a taxonomy for segmenting companies based on their business activities.

Classification

Stock Embeddings: Learning Distributed Representations for Financial Assets

1 code implementation14 Feb 2022 Rian Dolphin, Barry Smyth, Ruihai Dong

Identifying meaningful relationships between the price movements of financial assets is a challenging but important problem in a variety of financial applications.

NumHTML: Numeric-Oriented Hierarchical Transformer Model for Multi-task Financial Forecasting

no code implementations5 Jan 2022 Linyi Yang, Jiazheng Li, Ruihai Dong, Yue Zhang, Barry Smyth

Financial forecasting has been an important and active area of machine learning research because of the challenges it presents and the potential rewards that even minor improvements in prediction accuracy or forecasting may entail.

Pseudo-labelling Enhanced Media Bias Detection

no code implementations16 Jul 2021 Qin Ruan, Brian Mac Namee, Ruihai Dong

Leveraging unlabelled data through weak or distant supervision is a compelling approach to developing more effective text classification models.

Bias Detection Data Augmentation +2

Measuring Financial Time Series Similarity With a View to Identifying Profitable Stock Market Opportunities

1 code implementation7 Jul 2021 Rian Dolphin, Barry Smyth, Yang Xu, Ruihai Dong

Forecasting stock returns is a challenging problem due to the highly stochastic nature of the market and the vast array of factors and events that can influence trading volume and prices.

Future prediction Stock Prediction +2

Fact Check: Analyzing Financial Events from Multilingual News Sources

no code implementations29 Jun 2021 Linyi Yang, Tin Lok James Ng, Barry Smyth, Ruihai Dong

The explosion in the sheer magnitude and complexity of financial news data in recent years makes it increasingly challenging for investment analysts to extract valuable insights and perform analysis.

Clustering

Exploring the Efficacy of Automatically Generated Counterfactuals for Sentiment Analysis

1 code implementation ACL 2021 Linyi Yang, Jiazheng Li, Pádraig Cunningham, Yue Zhang, Barry Smyth, Ruihai Dong

While state-of-the-art NLP models have been achieving the excellent performance of a wide range of tasks in recent years, important questions are being raised about their robustness and their underlying sensitivity to systematic biases that may exist in their training and test data.

counterfactual Data Augmentation +1

Generating Plausible Counterfactual Explanations for Deep Transformers in Financial Text Classification

no code implementations COLING 2020 Linyi Yang, Eoin M. Kenny, Tin Lok James Ng, Yi Yang, Barry Smyth, Ruihai Dong

Corporate mergers and acquisitions (M&A) account for billions of dollars of investment globally every year, and offer an interesting and challenging domain for artificial intelligence.

counterfactual Explainable Artificial Intelligence (XAI) +3

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