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arXiv · 2210.12997

Are Current Decoding Strategies Capable of Facing the Challenges of Visual Dialogue?

Amit Kumar Chaudhary·Alex J. Lucassen·Ioanna Tsani·Alberto Testoni
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Abstract

Decoding strategies play a crucial role in natural language generation systems. They are usually designed and evaluated in open-ended text-only tasks, and it is not clear how different strategies handle the numerous challenges that goal-oriented multimodal systems face (such as grounding and informativeness). To answer this question, we compare a wide variety of different decoding strategies and hyper-parameter configurations in a Visual Dialogue referential game. Although none of them successfully balance lexical richness, accuracy in the task, and visual grounding, our in-depth analysis allows us to highlight the strengths and weaknesses of each decoding strategy. We believe our findings and suggestions may serve as a starting point for designing more effective decoding algorithms that handle the challenges of Visual Dialogue tasks.

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Amit Kumar Chaudhary, Alex J. Lucassen, Ioanna Tsani, Alberto Testoni. 2022-10-24. Are Current Decoding Strategies Capable of Facing the Challenges of Visual Dialogue?. https://arxiv.org/abs/2210.12997

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