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Saiga2 70B, Russian LLaMA2-based chatbot

Based on LLaMA-2 70B fp16

Llama.cpp version: link

This is an adapter-only version.

Training code: link

WARNING: Avoid using V100 (in Colab, for example). Outputs are much worse in this case.

from peft import PeftModel, PeftConfig
from transformers import AutoModelForCausalLM, AutoTokenizer, GenerationConfig

MODEL_NAME = "IlyaGusev/saiga2_70b_lora"
DEFAULT_MESSAGE_TEMPLATE = "<s>{role}\n{content}</s>\n"
DEFAULT_SYSTEM_PROMPT = "Ты — Сайга, русскоязычный автоматический ассистент. Ты разговариваешь с людьми и помогаешь им."

class Conversation:
 def __init__(
 self,
 message_template=DEFAULT_MESSAGE_TEMPLATE,
 system_prompt=DEFAULT_SYSTEM_PROMPT,
 start_token_id=1,
 bot_token_id=9225
):
 self.message_template = message_template
 self.start_token_id = start_token_id
 self.bot_token_id = bot_token_id
 self.messages = [{
 "role": "system",
 "content": system_prompt
 }]

 def get_start_token_id(self):
 return self.start_token_id

 def get_bot_token_id(self):
 return self.bot_token_id

 def add_user_message(self, message):
 self.messages.append({
 "role": "user",
 "content": message
 })

 def add_bot_message(self, message):
 self.messages.append({
 "role": "bot",
 "content": message
 })

 def get_prompt(self, tokenizer):
 final_text = ""
 for message in self.messages:
 message_text = self.message_template.format(**message)
 final_text += message_text
 final_text += tokenizer.decode([self.start_token_id, self.bot_token_id])
 return final_text.strip()


def generate(model, tokenizer, prompt, generation_config):
 data = tokenizer(prompt, return_tensors="pt")
 data = {k: v.to(model.device) for k, v in data.items()}
 output_ids = model.generate(
 **data,
 generation_config=generation_config
 )[0]
 output_ids = output_ids[len(data["input_ids"][0]):]
 output = tokenizer.decode(output_ids, skip_special_tokens=True)
 return output.strip()

config = PeftConfig.from_pretrained(MODEL_NAME)
model = AutoModelForCausalLM.from_pretrained(
 config.base_model_name_or_path,
 load_in_8bit=True,
 torch_dtype=torch.float16,
 device_map="auto"
)
model = PeftModel.from_pretrained(
 model,
 MODEL_NAME,
 torch_dtype=torch.float16
)
model.eval()

tokenizer = AutoTokenizer.from_pretrained(MODEL_NAME, use_fast=False)
generation_config = GenerationConfig.from_pretrained(MODEL_NAME)
print(generation_config)

inputs = ["Почему трава зеленая?", "Сочини длинный рассказ, обязательно упоминая следующие объекты. Дано: Таня, мяч"]
for inp in inputs:
 conversation = Conversation()
 conversation.add_user_message(inp)
 prompt = conversation.get_prompt(tokenizer)

 output = generate(model, tokenizer, prompt, generation_config)
 print(inp)
 print(output)
 print()
 print("==============================")
 print()

Examples:

User: Почему трава зеленая? 
Saiga: 

User: Сочини длинный рассказ, обязательно упоминая следующие объекты. Дано: Таня, мяч
Saiga:

v1:

• dataset code revision 0dbd022613874fcda915f588f4a3292e137017d2
• wandb link
• 5 datasets: ru_turbo_alpaca, ru_sharegpt_cleaned, oasst1_ru_main_branch, gpt_roleplay_realm, ru_instruct_gpt4
• Datasets merging script: create_chat_set.py
• saiga2_70b vs gpt-3.5-turbo: 91-10-75