AWS Certified AI Practitioner AIF-C01 Practice Question
A company needs to specialize a publicly available foundation model so it understands the company's industry-specific jargon. To minimize GPU cost, it wants to update only a small fraction of the model's parameters instead of retraining the entire network. Which fine-tuning method best meets these requirements?
Continuous pre-training on a large, new corpus
Parameter-efficient fine-tuning (for example, LoRA adapters)
Parameter-efficient fine-tuning techniques, such as using Low-Rank Adaptation (LoRA) adapters, freeze most of the model's original weights and train only a small set of additional parameters. This provides domain adaptation while keeping training time and compute costs much lower than full model pre-training or continuous pre-training. Zero-shot prompting does not change any weights, so the model would not truly learn the company's terminology, and training a new model from scratch is the most expensive option.
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AWS Certified AI Practitioner AIF-C01
Applications of Foundation Models
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