Papers by Nishanth Sastry
Revealing COVID-19’s Social Dynamics: Diachronic Semantic Analysis of Vaccine and Symptom Discourse on Twitter (2024.findings-emnlp)
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| Challenge: | Social media data provide a new source for social science and cultural analysis research, but its analysis is challenging due to the semantic shift phenomenon, where word meanings evolve over time. |
| Approach: | They propose an unsupervised dynamic word embedding method to capture longitudinal semantic shifts in social media data without predefined anchor words. |
| Outcome: | The proposed method captures longitudinal semantic shifts in social media data without predefined anchor words and leverages word co-occurrence statistics and dynamic updating to adapt embeddings over time. |
An Expert Annotated Dataset for the Detection of Online Misogyny (2021.eacl-main)
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| Challenge: | Existing studies have found that misogynistic content is pervasive on some Reddit communities, but a training dataset for misogorical classification has not been created with the data. |
| Approach: | They propose a hierarchical taxonomy and an expert labelled dataset to enable automatic classification of online misogynistic content. |
| Outcome: | The proposed taxonomy and an expert labelled dataset are made freely available for future research. |