Creating DPO Dataset Using Llama
Hi everyone,I am currently working on creating a DPO dataset using Llama, and I have a question regarding the best practice for creating the dataset.Here’s the approach 1:Let’s say I sample 5 responses from Llama using a prompt, and after evaluation, sample 5 is deemed the best according to LLM-as-a-judge. The dataset structure would look like this:Accept         RejectSample 5     Sample 1Sample 5     Sample 2Sample 5     Sample 3Sample 5     Sample 4And repeat for other promptsHere is approach 2:Only 2 responses are sampled from Llama using a prompt. In this case, the structure would be:Accept         RejectSample 2     Sample 1And repeat for other promptsMy question is, which of these methods is more effective for creating a high-quality DPO dataset? Should I stick with sampling multiple responses and comparing them all to the best one, or is it better to sample just two responses for each prompt?Any insights or recommendations based on your experiences would be greatly appreciated!Thanks!