Natraj Raman


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When FLUE Meets FLANG: Benchmarks and Large Pretrained Language Model for Financial Domain
Raj Shah | Kunal Chawla | Dheeraj Eidnani | Agam Shah | Wendi Du | Sudheer Chava | Natraj Raman | Charese Smiley | Jiaao Chen | Diyi Yang
Proceedings of the 2022 Conference on Empirical Methods in Natural Language Processing

Pre-trained language models have shown impressive performance on a variety of tasks and domains. Previous research on financial language models usually employs a generic training scheme to train standard model architectures, without completely leveraging the richness of the financial data. We propose a novel domain specific Financial LANGuage model (FLANG) which uses financial keywords and phrases for better masking, together with span boundary objective and in-filing objective. Additionally, the evaluation benchmarks in the field have been limited. To this end, we contribute the Financial Language Understanding Evaluation (FLUE), an open-source comprehensive suite of benchmarks for the financial domain. These include new benchmarks across 5 NLP tasks in financial domain as well as common benchmarks used in the previous research. Experiments on these benchmarks suggest that our model outperforms those in prior literature on a variety of NLP tasks. Our models, code and benchmark data will be made publicly available on Github and Huggingface.


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ViziTex: Interactive Visual Sense-Making of Text Corpora
Natraj Raman | Sameena Shah | Tucker Balch | Manuela Veloso
Proceedings of the Second Workshop on Data Science with Human in the Loop: Language Advances

Information visualization is critical to analytical reasoning and knowledge discovery. We present an interactive studio that integrates perceptive visualization techniques with powerful text analytics algorithms to assist humans in sense-making of large complex text corpora. The novel visual representations introduced here encode the features delivered by modern text mining models using advanced metaphors such as hypergraphs, nested topologies and tessellated planes. They enhance human-computer interaction experience for various tasks such as summarization, exploration, organization and labeling of documents. We demonstrate the ability of the visuals to surface the structure, relations and concepts from documents across different domains.