Training-Free Mitigation of Language Reasoning Degradation After Multimodal Instruction Tuning

• URL: http://arxiv.org/abs/2412.03467v1
• Date: Wed, 04 Dec 2024 16:56:20 GMT
• Title: Training-Free Mitigation of Language Reasoning Degradation After Multimodal Instruction Tuning
• Authors: Neale Ratzlaff, Man Luo, Xin Su, Vasudev Lal, Phillip Howard,
• Abstract summary: Multimodal models typically combine a powerful large language model (LLM) with a vision encoder and are then trained on multimodal data via instruction tuning. We explore the effects of multimodal instruction tuning on language reasoning performance.
• Score: 9.824152397546719
• License:
• Abstract: Multimodal models typically combine a powerful large language model (LLM) with a vision encoder and are then trained on multimodal data via instruction tuning. While this process adapts LLMs to multimodal settings, it remains unclear whether this adaptation compromises their original language reasoning capabilities. In this work, we explore the effects of multimodal instruction tuning on language reasoning performance. We focus on LLaVA, a leading multimodal framework that integrates LLMs such as Vicuna or Mistral with the CLIP vision encoder. We compare the performance of the original LLMs with their multimodal-adapted counterparts across eight language reasoning tasks. Our experiments yield several key insights. First, the impact of multimodal learning varies between Vicuna and Mistral: we observe a degradation in language reasoning for Mistral but improvements for Vicuna across most tasks. Second, while multimodal instruction learning consistently degrades performance on mathematical reasoning tasks (e.g., GSM8K), it enhances performance on commonsense reasoning tasks (e.g., CommonsenseQA). Finally, we demonstrate that a training-free model merging technique can effectively mitigate the language reasoning degradation observed in multimodal-adapted Mistral and even improve performance on visual tasks.

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