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Diversity as a By-Product: Goal-oriented Language Generation Leads to Linguistic Variation

التنوع كمنتج ثانوي: توليد اللغة الموجهة نحو الأهداف يؤدي إلى التباين اللغوي

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 Publication date 2021
and research's language is English
 Created by Shamra Editor




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The ability for variation in language use is necessary for speakers to achieve their conversational goals, for instance when referring to objects in visual environments. We argue that diversity should not be modelled as an independent objective in dialogue, but should rather be a result or by-product of goal-oriented language generation. Different lines of work in neural language generation investigated decoding methods for generating more diverse utterances, or increasing the informativity through pragmatic reasoning. We connect those lines of work and analyze how pragmatic reasoning during decoding affects the diversity of generated image captions. We find that boosting diversity itself does not result in more pragmatically informative captions, but pragmatic reasoning does increase lexical diversity. Finally, we discuss whether the gain in informativity is achieved in linguistically plausible ways.



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