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Consider a multimodal generative model trained on a dataset of images and corresponding captions. After training, you observe that the model generates captions that are grammatically correct but often lack specific details and relevance to the input image. Which of the following regularization techniques is MOST likely to improve the faithfulness and informativeness of the generated captions?
Correct Answer: D
Attention regularization is the most directly relevant technique. By penalizing the model when it fails to attend to relevant image regions, it encourages the model to focus on the important visual cues when generating the caption. This leads to more informative and faithful captions that are grounded in the image content. L1 regularization (A) promotes sparsity, Dropout (B) reduces overfitting, KL divergence regularization (C) encourages similarity to the prior distribution (which may not improve faithfulness), and adding Gaussian noise (E) improves robustness, but none of these directly address the issue of attention to relevant image regions.