Siapkan untuk Pelatihan 8-bit

Anda ingin memulai fine-tuning RLHF, tetapi terus mengalami error kehabisan memori. Untuk mengatasinya, Anda memutuskan beralih ke presisi 8-bit, yang memungkinkan fine-tuning lebih efisien, dengan memanfaatkan pustaka Hugging Face peft.

Berikut ini sudah diimpor sebelumnya:

AutoModelForCausalLM dari transformers
prepare_model_for_int8_training dari peft
AutoModelForCausalLMWithValueHead dari trl

Latihan ini adalah bagian dari kursus

Reinforcement Learning from Human Feedback (RLHF)

Petunjuk latihan

Muat model pra-latih dan pastikan menyertakan parameter untuk presisi 8-bit.
Gunakan fungsi prepare_model_for_int8_training untuk menyiapkan model agar siap untuk fine-tuning berbasis LoRA.
Muat model dengan value head untuk pelatihan PPO.

Latihan interaktif praktis

Cobalah latihan ini dengan menyelesaikan kode contoh berikut.

model_name = "gpt2"  

# Load the model in 8-bit precision
pretrained_model = AutoModelForCausalLM.from_pretrained(
                                                       model_name, 
                                                       ____=True
                                                      )

# Prepare the model for fine-tuning
pretrained_model_8bit = ____(pretrained_model)

# Load the model with a value head
model = ____.from_pretrained(pretrained_model_8bit)

Edit dan Jalankan Kode

Latihan ini adalah bagian dari kursus

Reinforcement Learning from Human Feedback (RLHF)

SkillTag.level.advancedSkillTag.label

4.8+

Mulai Kursus Gratis

This chapter introduces the basics of Reinforcement Learning with Human Feedback (RLHF), a technique that uses human input to help AI models learn more effectively. Get started with RLHF by understanding how it differs from traditional reinforcement learning and why human feedback can enhance AI performance in various domains.

Exercise 1: Introduction to RLHF Exercise 2: Text generation with RLHF Exercise 3: Classifying generated text for RLHF Exercise 4: RL vs. RLHF Exercise 5: Exploring pre-trained LLMs Exercise 6: Tokenize a text dataset Exercise 7: Fine-tuning for review classification Exercise 8: Preparing data for RLHF Exercise 9: Preparing the preference dataset Exercise 10: Extracting prompts

Discover how to set up systems for gathering human feedback in this Chapter. Learn best practices for collecting high-quality data, from pairwise comparisons to uncertainty sampling, and explore strategies for enhancing your data collection.

Exercise 1: Methods for high-quality feedback gathering Exercise 2: Understanding comparison and rating in RLHF Exercise 3: Comparing slogans for a gym campaign Exercise 4: Measuring feedback quality and relevance Exercise 5: Low confidence Exercise 6: K-means for feedback clustering Exercise 7: Active learning Exercise 8: Implementing an active learning pipeline Exercise 9: Active learning loop

In this Chapter, you'll get into the core of Reinforcement Learning from Human Feedback training. This includes exploring fine-tuning with PPO, techniques to train efficiently, and handling potential divergences from your metrics' objectives.

Exercise 1: Menjelajahi reward model Exercise 2: Menginisialisasi reward Exercise 3: Menyiapkan reward trainer Exercise 4: Pelatihan dengan PPO Exercise 5: Inisialisasi pelatih PPO Exercise 6: Penyetelan halus dengan PPO Exercise 7: Fine-tuning yang efisien dalam RLHF Exercise 8: Siapkan untuk Pelatihan 8-bit

Latihan Saat Ini

Exercise 9: Latih dengan LoRA

Explore key techniques for assessing and improving model performance in this last Chapter of Reinforcement Learning from Human Feedback (RLHF): from fine-tuning metrics to incorporating diverse feedback sources, you'll be provided with a comprehensive toolkit to refine your models effectively.

Exercise 1: Model metrics and adjustments Exercise 2: Mitigating negative KL divergence Exercise 3: Checking the reward model Exercise 4: Incorporating diverse feedback sources Exercise 5: Majority voting on multiple data sources Exercise 6: Unreliable data source identification Exercise 7: Evaluating RLHF models Exercise 8: Interpreting curves Exercise 9: Evaluating RLHF with metrics Exercise 10: Wrapping up your RLHF journey