Medical Llama3 V2

🚀 医療版Llama3-v2：医療質問に特化して微調整されたLlama3モデル

このプロジェクトは、強力なLlama3 8Bモデルの微調整版を提供しています。このモデルは、医療関連の質問に豊富な情報を持って回答するように特別に設計されています。AI医療チャットボットデータセット（ruslanmv/ai-medical-chatbot）の豊富な知識を活用しています。

🚀 クイックスタート

このモデルは、Hugging FaceのTransformersライブラリを通じてアクセスすることができます。

✨ 主な機能

• 医療分野に特化：健康関連の質問に最適化されています。
• 豊富な知識：包括的な医療チャットボットデータセットで訓練されています。
• テキスト生成能力：有益な情報を含んだ回答を生成することができます。

📦 インストール

必要なライブラリをpipでインストールします：

pip install transformers   bitsandbytes  accelerate

💻 使用例

基本的な使用法

以下のPythonコードは、Medical-Llama3-8B-16bitモデルとやり取りし、医療質問に対する回答を生成する方法を示しています：

from transformers import AutoModelForCausalLM, AutoTokenizer, BitsAndBytesConfig
import torch

# Define BitsAndBytesConfig
bnb_config = BitsAndBytesConfig(load_in_4bit=True,
                                bnb_4bit_quant_type="nf4",
                                bnb_4bit_compute_dtype=torch.float16)

# Model name
model_name = "ruslanmv/Medical-Llama3-v2"

# Load tokenizer and model with BitsAndBytesConfig
tokenizer = AutoTokenizer.from_pretrained(model_name, trust_remote_code=True, bnb_config=bnb_config)
model = AutoModelForCausalLM.from_pretrained(model_name, config=bnb_config)

# Ensure model is on the correct device
device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
model.to(device)


# Define askme function
def askme(question):
    sys_message = ''' 
    You are Medical AI Assistant. Please be thorough and provide an informative answer. 
    If you don't know the answer to a specific medical inquiry, advise seeking professional help.
    '''   
    # Create messages structured for the chat template
    messages = [{"role": "system", "content": sys_message}, {"role": "user", "content": question}]
  
    # Applying chat template
    prompt = tokenizer.apply_chat_template(messages, tokenize=False, add_generation_prompt=True)
    inputs = tokenizer(prompt, return_tensors="pt", truncation=True, padding=True, max_length=1000)
    # Move inputs to device
    input_ids = inputs['input_ids'].to(device)
    attention_mask = inputs['attention_mask'].to(device)
    # Generate outputs
    with torch.no_grad():
        outputs = model.generate(input_ids=input_ids, attention_mask=attention_mask, max_length=1000, use_cache=True)
    # Extract and return the generated text, removing the prompt
    response_text = tokenizer.batch_decode(outputs, skip_special_tokens=True)[0]
    return response_text



# Example usage
question = '''I'm a 35-year-old male and for the past few months, I've been experiencing fatigue, 
increased sensitivity to cold, and dry, itchy skin. 
Could these symptoms be related to hypothyroidism? 
If so, what steps should I take to get a proper diagnosis and discuss treatment options?'''

print(askme(question))

回答の例は以下の通りです：

Assistant:  You should consult a physician for a proper diagnosis and discussion of treatment options. As a medical AI assistant, I do not have access to your medical history, nor can I physically examine you, so I can only provide an answer based on the information you provide. It is always best to seek the advice of a medical professional for an accurate diagnosis and treatment plan.
That being said, the symptoms you have described could be related to hypothyroidism, which is a condition in which the thyroid gland does not produce sufficient hormone. Hypothyroidism can have a number of causes, including a deficiency of iodine, a tumor of the pituitary gland that reduces thyroxine (T4) production, or autoimmune disease that damages the thyroid gland. In addition to the symptoms you have described, other possible signs of hypothyroidism include weight gain, cold intolerance, fatigue, dry skin, joint pain, memory loss, depression, and loss of sexual desire.
To determine whether your symptoms are related to hypothyroidism, your physician will start by taking a history and performing a physical examination. He or she will also order several laboratory tests, including:
1. TSH test: This test measures the level of TSH (thyroid-stimulating hormone) in your blood. TSH stimulates the thyroid gland to produce T4. If your TSH level is elevated, it can indicate that your thyroid gland is not producing enough T4.
2. T4 test: This test measures the level of T4 in your blood. T4 is the main hormone produced by the thyroid gland. If your T4 level is low, it can indicate that your thyroid gland is not functioning properly.
3. T3 test: This test measures the level of T3 in your blood. T3 is another hormone produced by the thyroid gland. T3 is more active than T4 and has a number of important functions in the body, including regulating metabolism.
4. thyroid-stimulating immunoglobulin (TSI) test: This test looks for an antibody called TSI in your blood. TSI stimulates the thyroid gland to produce more T4 and T3, even when the pituitary gland is not stimulating the thyroid gland to produce these hormones. The presence of TSI can indicate autoimmune thyroiditis.
5. thyroid peroxidase antibody test: This test looks for an antibody called thyroid peroxidase in your blood. This antibody attacks the thyroid gland and can cause the gland to become damaged. The presence of this antibody can indicate autoimmune thyroiditis.
If any of these tests suggest that you have hypothyroidism, your physician may want to order additional tests to confirm the diagnosis. If you are found to have hypothyroidism, treatment will consist of daily medication to replace the missing hormone. With proper treatment, the symptoms of hypothyroidism usually improve within two months.

Google Colabでの使用

以下のリンクから、Google Colabでこのモデルを使用することができます： Chatbot-Medical-Llama3-v2.ipynb

📚 ドキュメント

重要な注意事項

このモデルは情報提供のみを目的としており、専門的な医療アドバイスの代替にはなりません。医療関連の問題がある場合は、常に適格な医療提供者に相談してください。

ライセンス

このモデルは、Apache License 2.0に基づいて配布されています（詳細はLICENSEファイルを参照してください）。

貢献

このリポジトリへの貢献を歓迎します！改善提案やアイデアがあれば、いつでもプルリクエストを作成してください。

免責事項

有益な回答を提供するために努力していますが、モデルの出力の正確性を保証することはできません。正確な医療アドバイスが必要な場合は、必ず医師または他の医療専門家に相談してください。

📄 ライセンス

このモデルは、Apache License 2.0に基づいて配布されています。詳細はLICENSEファイルを参照してください。