Papers by Ian Stewart
Si O No, Que Penses? Catalonian Independence and Linguistic Identity on Social Media (N18-2)
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| Challenge: | This study examines the use of Catalan on Twitter in discourse related to the 2017 independence referendum. |
| Approach: | They use code-switching to determine the role of Catalan in political discourse . they corroborate prior findings that pro-independence tweets are more likely to include the local language than anti-independent tweets . |
| Outcome: | The proposed method corroborates previous findings that pro-independence tweets are more likely to include the local language than anti-independent tweets. |
FIBER: Fill-in-the-Blanks as a Challenging Video Understanding Evaluation Framework (2022.acl-long)
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Santiago Castro, Ruoyao Wang, Pingxuan Huang, Ian Stewart, Oana Ignat, Nan Liu, Jonathan Stroud, Rada Mihalcea
| Challenge: | Existing video understanding evaluation frameworks that use fill-in-the-blanks do not reflect real-world tasks. |
| Approach: | They propose to use fill-in-the-blanks as a video understanding evaluation framework and introduce a novel dataset that collects multiple perspectives on the same video. |
| Outcome: | The proposed framework does not share the weaknesses of the current state-of-the-art language-informed video understanding tasks, namely: (1) video question answering using multiple-choice questions, where models perform relatively well because they exploit linguistic biases in the task formulation; (2) video captioning, which relies on an open-ended evaluation framework that is often inaccurate because system answers may be perceived as incorrect if they differ in form from the ground truth. |
Making “fetch” happen: The influence of social and linguistic context on nonstandard word growth and decline (D18-1)
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| Challenge: | In an online community, new words come and go, but language change is shaped and constrained by the grammatical system in which it takes part. |
| Approach: | They analysed the frequency of non-standard words in reddit to determine their impact on language change. |
| Outcome: | The results show that language change is shaped and constrained by the grammatical system in which it takes place. |