Papers by Anthony Hills
Exciting Mood Changes: A Time-aware Hierarchical Transformer for Change Detection Modelling (2024.findings-acl)
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| Challenge: | Existing work on temporally sensitive tasks focuses on predicting mood changes . however, there is little attention given to the importance of longitudinal language modelling . |
| Approach: | They propose a Hawkes process-inspired transformation layer to model the influence of time on users’ posts, capturing both their immediate and historical dynamics. |
| Outcome: | The proposed model outperforms existing models on two existing datasets and shows clear performance gains. |
Identifying Moments of Change from Longitudinal User Text (2022.acl-long)
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| Challenge: | Identifying changes in individuals’ behaviour and mood via shared content is gaining importance given the global increase in mental health disorders and the limited access to support services. |
| Approach: | They propose a task of identifying moments of change in individuals on the basis of their shared content online. |
| Outcome: | The proposed task is based on 500 manually annotated user timelines and shows that it performs best through context aware sequential modelling. |
Creation and evaluation of timelines for longitudinal user posts (2023.eacl-main)
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| Challenge: | Existing methods for segmenting user posts into timelines improve quality and cost of manual annotation. |
| Approach: | They propose a set of methods for segmenting longitudinal user posts into timelines likely to contain interesting moments of change in a user’s behaviour based on their online posting activity. |
| Outcome: | The proposed framework is able to evaluate two different social media datasets and compares with existing models. |