Search Results for author: Alexandra I. Cristea

Found 10 papers, 3 papers with code

Language as a Latent Sequence: deep latent variable models for semi-supervised paraphrase generation

1 code implementation5 Jan 2023 Jialin Yu, Alexandra I. Cristea, Anoushka Harit, Zhongtian Sun, Olanrewaju Tahir Aduragba, Lei Shi, Noura Al Moubayed

To leverage information from text pairs, we additionally introduce a novel supervised model we call dual directional learning (DDL), which is designed to integrate with our proposed VSAR model.

Paraphrase Generation

Religion and Spirituality on Social Media in the Aftermath of the Global Pandemic

1 code implementation11 Dec 2022 Olanrewaju Tahir Aduragba, Alexandra I. Cristea, Pete Phillips, Jonas Kurlberg, Jialin Yu

During the COVID-19 pandemic, the Church closed its physical doors for the first time in about 800 years, which is, arguably, a cataclysmic event.

Incorporating Emotions into Health Mention Classification Task on Social Media

1 code implementation9 Dec 2022 Olanrewaju Tahir Aduragba, Jialin Yu, Alexandra I. Cristea

The health mention classification (HMC) task is the process of identifying and classifying mentions of health-related concepts in text.

Multi-task Learning for Personal Health Mention Detection on Social Media

no code implementations9 Dec 2022 Olanrewaju Tahir Aduragba, Jialin Yu, Alexandra I. Cristea

Detecting personal health mentions on social media is essential to complement existing health surveillance systems.

Multi-Task Learning

INTERACTION: A Generative XAI Framework for Natural Language Inference Explanations

no code implementations2 Sep 2022 Jialin Yu, Alexandra I. Cristea, Anoushka Harit, Zhongtian Sun, Olanrewaju Tahir Aduragba, Lei Shi, Noura Al Moubayed

XAI with natural language processing aims to produce human-readable explanations as evidence for AI decision-making, which addresses explainability and transparency.

Decision Making Explainable Artificial Intelligence (XAI) +2

Exploring Bayesian Deep Learning for Urgent Instructor Intervention Need in MOOC Forums

no code implementations26 Apr 2021 Jialin Yu, Laila Alrajhi, Anoushka Harit, Zhongtian Sun, Alexandra I. Cristea, Lei Shi

Learners may post their feelings of confusion and struggle in the respective MOOC forums, but with the large volume of posts and high workloads for MOOC instructors, it is unlikely that the instructors can identify all learners requiring intervention.

Variational Inference

Predicting MOOCs Dropout Using Only Two Easily Obtainable Features from the First Week's Activities

no code implementations12 Aug 2020 Ahmed Alamri, Mohammad Alshehri, Alexandra I. Cristea, Filipe D. Pereira, Elaine Oliveira, Lei Shi, Craig Stewart

While Massive Open Online Course (MOOCs) platforms provide knowledge in a new and unique way, the very high number of dropouts is a significant drawback.

Nowcasting the Stance of Social Media Users in a Sudden Vote: The Case of the Greek Referendum

no code implementations26 Aug 2018 Adam Tsakalidis, Nikolaos Aletras, Alexandra I. Cristea, Maria Liakata

Modelling user voting intention in social media is an important research area, with applications in analysing electorate behaviour, online political campaigning and advertising.

Can We Assess Mental Health through Social Media and Smart Devices? Addressing Bias in Methodology and Evaluation

no code implementations19 Jul 2018 Adam Tsakalidis, Maria Liakata, Theo Damoulas, Alexandra I. Cristea

Predicting mental health from smartphone and social media data on a longitudinal basis has recently attracted great interest, with very promising results being reported across many studies.

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