QAInfomax: Enhancing Reading Comprehension With Mutual Information Maximization.pdf

D19-1333.pdf
Preview of QAInfomax: Enhancing Reading Comprehension with Mutual Information Maximization
🔗 Source: aclanthology.org
📊 Size: 354 KB
👤 Author: Yi-Ting Yeh ; Yun-Nung Chen
⬇️ Downloads: 1,087

Summary

Traditional methods achieve high accuracy on benchmark datasets like SQuAD but struggle with "adversarial" examples – sentences that look similar to answers but don't actually provide the correct response.

The Problem:

Existing QA models often overfit to superficial patterns in training data, leading to poor performance on adversarial examples. This is because standard evaluation metrics only measure surface-level understanding rather than genuine comprehension.

QAInfomax Solution:

QAInfomax leverages mutual information (MI) as a regularizer during model training. It encourages the QA system to learn representations that:

Capture Local Context: Each word representation in the answer should contain relevant information about both the answer itself and its surrounding context.
Summarize Global Information: The overall answer representation should encapsulate comprehensive knowledge about the question and the relevant passage.

Technical Details:

QAInfomax incorporates deep infomax (DIM), a technique that effectively estimates mutual information between variables using neural networks. This allows for efficient computation of MI during training.

Key Contributions:

First application of DIM-based MI estimation in NLP.
State-of-the-art performance on the Adversarial-SQuAD dataset without additional data, demonstrating improved robustness against adversarial examples.

In Summary:

QAInfomax offers a promising direction for building more robust and truly understanding QA systems by moving beyond superficial patterns in text data.

Description

A regularization technique for enhancing reading comprehension systems by maximizing mutual information, aiming to improve the distinction between related but incorrect answers and the actual correct response.

Technical Information

  • File Format: PDF
  • File Size: 354 KB
  • Pages: 6
  • Language: EN
  • Author: Yi-Ting Yeh ; Yun-Nung Chen
  • Total Downloads: 1,087
  • Last Updated: 15 hours ago

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