Prashant Gupta


2019

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Pentagon at MEDIQA 2019: Multi-task Learning for Filtering and Re-ranking Answers using Language Inference and Question Entailment
Hemant Pugaliya | Karan Saxena | Shefali Garg | Sheetal Shalini | Prashant Gupta | Eric Nyberg | Teruko Mitamura
Proceedings of the 18th BioNLP Workshop and Shared Task

Parallel deep learning architectures like fine-tuned BERT and MT-DNN, have quickly become the state of the art, bypassing previous deep and shallow learning methods by a large margin. More recently, pre-trained models from large related datasets have been able to perform well on many downstream tasks by just fine-tuning on domain-specific datasets (similar to transfer learning). However, using powerful models on non-trivial tasks, such as ranking and large document classification, still remains a challenge due to input size limitations of parallel architecture and extremely small datasets (insufficient for fine-tuning). In this work, we introduce an end-to-end system, trained in a multi-task setting, to filter and re-rank answers in the medical domain. We use task-specific pre-trained models as deep feature extractors. Our model achieves the highest Spearman’s Rho and Mean Reciprocal Rank of 0.338 and 0.9622 respectively, on the ACL-BioNLP workshop MediQA Question Answering shared-task.

2009

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Cross-document Event Extraction and Tracking: Task, Evaluation, Techniques and Challenges
Heng Ji | Ralph Grishman | Zheng Chen | Prashant Gupta
Proceedings of the International Conference RANLP-2009

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Predicting Unknown Time Arguments based on Cross-Event Propagation
Prashant Gupta | Heng Ji
Proceedings of the ACL-IJCNLP 2009 Conference Short Papers