Papers by Ali Omrani
Social-Group-Agnostic Bias Mitigation via the Stereotype Content Model (2023.acl-long)
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Ali Omrani, Alireza Salkhordeh Ziabari, Charles Yu, Preni Golazizian, Brendan Kennedy, Mohammad Atari, Heng Ji, Morteza Dehghani
| Challenge: | Existing methods for mitigating bias require social-group-specific word pairs for each social attribute (e.g., gender) Existing approaches require only one social attribute, rendering them impractical and costly . |
| Approach: | They propose that stereotype content models capture the underlying connection between bias and stereotypes by embedding only two psychological dimensions of warmth and competence. |
| Outcome: | The proposed method performs comparably to group-specific debiasing on multiple bias benchmarks, but has theoretical and practical advantages over existing methods. |
Cost-Efficient Subjective Task Annotation and Modeling through Few-Shot Annotator Adaptation (2024.findings-emnlp)
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| Challenge: | In subjective tasks, the inclusion of diverse annotators is crucial as their unique perspectives significantly influence the annotations. |
| Approach: | They propose a framework that minimizes the annotation budget while maximizing the predictive performance for each annotator. |
| Outcome: | The proposed framework surpasses the previous SOTA in capturing the annotators’ individual perspectives with as little as 25% of the original annotation budget on two datasets. |
Reinforced Multiple Instance Selection for Speaker Attribute Prediction (2024.naacl-long)
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Alireza Salkhordeh Ziabari, Ali Omrani, Parsa Hejabi, Preni Golazizian, Brendan Kennedy, Payam Piray, Morteza Dehghani
| Challenge: | Current methods for predicting speaker attributes take a speaker’s utterances as input and provide a prediction per speaker attribute. |
| Approach: | They propose a Multiple Instance Learning approach that uses Reinforcement Learning to predict speaker attributes using a set of utterances from social media posts and political ideologies from transcribed speeches. |
| Outcome: | The proposed approach outperforms existing methods on a range of related tasks including predicting speakers’ psychographics and demographics from social media posts and political ideologies from transcribed speeches. |