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arXiv cs.CL AI Research Apr 20

Where does output diversity collapse in post-training?

★★★★★ significance 3/5

This research paper investigates why post-trained language models exhibit reduced output diversity compared to base models. The study traces how different training lineages, such as chain-of-thought distillation and supervised fine-tuning, impact semantic diversity and model weights.

Why it matters Understanding the mechanisms behind diversity collapse is critical for maintaining model creativity and utility during the post-training alignment phase.
Read the original at arXiv cs.CL

Tags

#output diversity #post-training #language models #fine-tuning #llm

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