Aditya Chandra


2024

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Media Framing through the Lens of Event-Centric Narratives
Rohan Das | Aditya Chandra | I-Ta Lee | Maria Leonor Pacheco
Proceedings of the The 6th Workshop on Narrative Understanding

From a communications perspective, a frame defines the packaging of the language used in such a way as to encourage certain interpretations and to discourage others. For example, a news article can frame immigration as either a boost or a drain on the economy, and thus communicate very different interpretations of the same phenomenon. In this work, we argue that to explain framing devices we have to look at the way narratives are constructed. As a first step in this direction, we propose a framework that extracts events and their relations to other events, and groups them into high-level narratives that help explain frames in news articles. We show that our framework can be used to analyze framing in U.S. news for two different domains: immigration and gun control.

2019

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Study on Unsupervised Statistical Machine Translation for Backtranslation
Anush Kumar | Nihal V. Nayak | Aditya Chandra | Mydhili K. Nair
Proceedings of the International Conference on Recent Advances in Natural Language Processing (RANLP 2019)

Machine Translation systems have drastically improved over the years for several language pairs. Monolingual data is often used to generate synthetic sentences to augment the training data which has shown to improve the performance of machine translation models. In our paper, we make use of an Unsupervised Statistical Machine Translation (USMT) to generate synthetic sentences. Our study compares the performance improvements in Neural Machine Translation model when using synthetic sentences from supervised and unsupervised Machine Translation models. Our approach of using USMT for backtranslation shows promise in low resource conditions and achieves an improvement of 3.2 BLEU score over the Neural Machine Translation model.