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Training Qwen2.5-0.5B-Instruct on Reddit posts summarization tasks with length constraint on my 3xMac Minis with GRPO - evals update [P]

Reddit r/MachineLearningΒ·April 16, 2026

The author trained Qwen2.5-0.5B-Instruct for Reddit post summarization using two reward strategies, finding that a combination of quality and length penalties yielded significantly better results. Evaluation was conducted using LLM-As-A-Judge and DeepEval tools for metrics like conscientiousness and clarity.

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