131 lines
4.6 KiB
Python
131 lines
4.6 KiB
Python
import json
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import random
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import numpy as np
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import streamlit as st
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import torch
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from transformers import AutoModelForCausalLM, AutoTokenizer
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from transformers.generation.utils import GenerationConfig
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st.set_page_config(page_title="MiniMind-V1")
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st.title("MiniMind-V1")
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model_id = "./minimind-v1"
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@st.cache_resource
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def load_model_tokenizer():
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model = AutoModelForCausalLM.from_pretrained(
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model_id,
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trust_remote_code=True
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)
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tokenizer = AutoTokenizer.from_pretrained(
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model_id,
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use_fast=False,
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trust_remote_code=True
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)
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model = model.eval()
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generation_config = GenerationConfig.from_pretrained(model_id)
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return model, tokenizer, generation_config
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def clear_chat_messages():
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del st.session_state.messages
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del st.session_state.chat_messages
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def init_chat_messages():
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with st.chat_message("assistant", avatar='🤖'):
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st.markdown("我是由JingyaoGong创造的MiniMind，很高兴为您服务😄 \n"
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"注：所有AI生成内容的准确性和立场无法保证，不代表我们的态度或观点。")
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if "messages" in st.session_state:
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for message in st.session_state.messages:
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avatar = "🫡" if message["role"] == "user" else "🤖"
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with st.chat_message(message["role"], avatar=avatar):
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st.markdown(message["content"])
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else:
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st.session_state.messages = []
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st.session_state.chat_messages = []
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return st.session_state.messages
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st.sidebar.title("设定调整")
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st.session_state.history_chat_num = st.sidebar.slider("携带历史对话条数", 0, 6, 0, step=2)
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st.session_state.max_new_tokens = st.sidebar.slider("最大输入/生成长度", 256, 768, 512, step=1)
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st.session_state.top_k = st.sidebar.slider("top_k", 0, 16, 14, step=1)
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st.session_state.temperature = st.sidebar.slider("temperature", 0.3, 1.3, 0.5, step=0.01)
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def setup_seed(seed):
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random.seed(seed)
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np.random.seed(seed)
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torch.manual_seed(seed)
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torch.cuda.manual_seed(seed)
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torch.cuda.manual_seed_all(seed)
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torch.backends.cudnn.deterministic = True
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torch.backends.cudnn.benchmark = False
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def main():
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model, tokenizer, generation_config = load_model_tokenizer()
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messages = init_chat_messages()
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if prompt := st.chat_input("Shift + Enter 换行, Enter 发送"):
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with st.chat_message("user", avatar='🧑💻'):
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st.markdown(prompt)
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messages.append({"role": "user", "content": prompt})
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st.session_state.chat_messages.append({"role": "user", "content": '请问，' + prompt + '？'})
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with st.chat_message("assistant", avatar='🤖'):
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placeholder = st.empty()
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# Generate a random seed
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random_seed = random.randint(0, 2 ** 32 - 1)
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setup_seed(random_seed)
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new_prompt = tokenizer.apply_chat_template(
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st.session_state.chat_messages[-(st.session_state.history_chat_num + 1):],
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tokenize=False,
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add_generation_prompt=True
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)[-(st.session_state.max_new_tokens - 1):]
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x = tokenizer(new_prompt).data['input_ids']
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x = (torch.tensor(x, dtype=torch.long)[None, ...])
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with torch.no_grad():
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res_y = model.generate(x, tokenizer.eos_token_id, max_new_tokens=st.session_state.max_new_tokens,
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temperature=st.session_state.temperature,
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top_k=st.session_state.top_k, stream=True)
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try:
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y = next(res_y)
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except StopIteration:
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return
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while y != None:
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answer = tokenizer.decode(y[0].tolist())
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if answer and answer[-1] == '<EFBFBD>':
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try:
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y = next(res_y)
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except:
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break
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continue
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if not len(answer):
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try:
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y = next(res_y)
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except:
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break
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continue
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placeholder.markdown(answer)
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try:
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y = next(res_y)
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except:
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break
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assistant_answer = answer.replace(new_prompt, "")
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messages.append({"role": "assistant", "content": assistant_answer})
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st.session_state.chat_messages.append({"role": "assistant", "content": assistant_answer})
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st.button("清空对话", on_click=clear_chat_messages)
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if __name__ == "__main__":
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main()
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