Enhancing Extractive Question Answering through Generative Models: Addressing Label Sparsity and Multi-Span Answers

Registration ID: IJNRD_226466

Published ID: IJNRD2408165

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Rajendra Arakh , Alok Gupta, Ruchi Patel

Extractive Question Answering (EQA), Synthetic Data Generation, Fine-tuning, Longformer-based Generative Augmentation (LFG-AUG), Exact Match (EM)

Extractive Question Answering (EQA) models have become integral components of modern natural language processing, providing automated information retrieval capabilities. However, they often face challenges with label sparsity and identifying answers that span multiple text segments (multi-span answers), limiting their effectiveness and applicability. This research proposes a novel approach, LFG-Aug, which combines the Longformer architecture from Hugging Face Transformers with a generative augmentation strategy to address these limitations. By employing synthetic data generation and fine-tuning, LFG-Aug enhances the performance of EQA models, particularly in handling multi-span answers and mitigating label sparsity issues. The evaluation of our approach utilizes the AllenAI/longformer-large-4096-finetuned-triviaQA model, a strong baseline, and demonstrates the effectiveness of LFG-Aug. The integration of the Longformer architecture enables the model to process long sequences effectively, making it well-suited for complex, real-world scenarios. The generative augmentation strategy addresses label sparsity by creating diverse training examples, enhancing the model's ability to generalize and understand multi-span answers. The evaluation results showcase superior performance, with significant improvements in Exact Match (EM) and F1 scores compared to baseline models. This research contributes to the advancement of EQA techniques, broadening their applicability and robustness, and offering promising directions for future work in this field. The proposed LFG-Aug model, combining the strengths of the Longformer architecture and generative modeling, highlights the potential of hybrid approaches in addressing longstanding challenges in EQA. By generating synthetic training data and fine-tuning the model, LFG-Aug enhances the understanding of complex, multi-span answers and improves EQA accuracy. This abstract provides a comprehensive overview of our research, detailing the challenges, proposed approach, methodology, and the significance of our findings in enhancing EQA through generative models.

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Rajendra Arakh , Alok Gupta, & Ruchi Patel (August-2024). Enhancing Extractive Question Answering through Generative Models: Addressing Label Sparsity and Multi-Span Answers . INTERNATIONAL JOURNAL OF NOVEL RESEARCH AND DEVELOPMENT, 9(8), b702-b709. https://ijnrd.org/papers/IJNRD2408165.pdf

Volume 9 Issue 8, August-2024

Pages : b702-b709

Paper Reg. ID: IJNRD_226466

Published Paper Id: IJNRD2408165

Research Area: Computer Science & Technology 

Author Type: Indian Author

Country: Jabalpur , Madhya Pradesh , India

Published Paper PDF: https://ijnrd.org/papers/IJNRD2408165.pdf

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