LLaMA Pro: Progressive LLaMA with Block Expansion
CoRR(2024)
摘要
Humans generally acquire new skills without compromising the old; however,
the opposite holds for Large Language Models (LLMs), e.g., from LLaMA to
CodeLLaMA. To this end, we propose a new post-pretraining method for LLMs with
an expansion of Transformer blocks. We tune the expanded blocks using only new
corpus, efficiently and effectively improving the model's knowledge without
catastrophic forgetting. In this paper, we experiment on the corpus of code and
math, yielding LLaMA Pro-8.3B, a versatile foundation model initialized from
LLaMA2-7B, excelling in general tasks, programming, and mathematics. LLaMA Pro
and its instruction-following counterpart (LLaMA Pro-Instruct) achieve advanced
performance among various benchmarks, demonstrating superiority over existing
open models in the LLaMA family and the immense potential of reasoning and
addressing diverse tasks as an intelligent agent. Our findings provide valuable
insights into integrating natural and programming languages, laying a solid
foundation for developing advanced language agents that operate effectively in
various environments.
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