📍在 智谱AI开放平台 体验更大规模的CogVLM模型。
我们推出新一代CogVLM2系列模型,并开源了基于Meta-Llama-3-8B-Instruct构建的两款模型。与上一代CogVLM开源模型相比,CogVLM2系列开源模型具有以下改进:
TextVQA、DocVQA等多项基准测试中性能显著提升。CogVLM2 Int4模型需要16G GPU内存,且必须在配备Nvidia GPU的Linux系统上运行。
| 模型名称 | cogvlm2-llama3-chinese-chat-19B-int4 | cogvlm2-llama3-chinese-chat-19B |
|---|---|---|
| 所需GPU内存 | 16G | 42G |
| 系统要求 | Linux (带Nvidia GPU) | Linux (带Nvidia GPU) |
我们的开源模型与上一代CogVLM开源模型相比,在多项榜单中均取得了优异成绩。其出色性能可与部分非开源模型相媲美,如下表所示:
| 模型 | 是否开源 | LLM大小 | TextVQA | DocVQA | ChartQA | OCRbench | MMMU | MMVet | MMBench |
|---|---|---|---|---|---|---|---|---|---|
| CogVLM1.1 | ✅ | 7B | 69.7 | - | 68.3 | 590 | 37.3 | 52.0 | 65.8 |
| LLaVA-1.5 | ✅ | 13B | 61.3 | - | - | 337 | 37.0 | 35.4 | 67.7 |
| Mini-Gemini | ✅ | 34B | 74.1 | - | - | - | 48.0 | 59.3 | 80.6 |
| LLaVA-NeXT-LLaMA3 | ✅ | 8B | - | 78.2 | 69.5 | - | 41.7 | - | 72.1 |
| LLaVA-NeXT-110B | ✅ | 110B | - | 85.7 | 79.7 | - | 49.1 | - | 80.5 |
| InternVL-1.5 | ✅ | 20B | 80.6 | 90.9 | 83.8 | 720 | 46.8 | 55.4 | 82.3 |
| QwenVL-Plus | ❌ | - | 78.9 | 91.4 | 78.1 | 726 | 51.4 | 55.7 | 67.0 |
| Claude3-Opus | ❌ | - | - | 89.3 | 80.8 | 694 | 59.4 | 51.7 | 63.3 |
| Gemini Pro 1.5 | ❌ | - | 73.5 | 86.5 | 81.3 | - | 58.5 | - | - |
| GPT-4V | ❌ | - | 78.0 | 88.4 | 78.5 | 656 | 56.8 | 67.7 | 75.0 |
| CogVLM2-LLaMA3 (我们的模型) | ✅ | 8B | 84.2 | 92.3 | 81.0 | 756 | 44.3 | 60.4 | 80.5 |
| CogVLM2-LLaMA3-Chinese (我们的模型) | ✅ | 8B | 85.0 | 88.4 | 74.7 | 780 | 42.8 | 60.5 | 78.9 |
所有评测结果均未使用任何外部OCR工具("纯像素输入")。
以下是使用该模型与 CogVLM2 模型进行对话的简单示例。更多使用场景,请在我们的 github 中查找。
import torch
from PIL import Image
from transformers import AutoModelForCausalLM, AutoTokenizer
MODEL_PATH = "THUDM/cogvlm2-llama3-chinese-chat-19B-int4"
DEVICE = 'cuda' if torch.cuda.is_available() else 'cpu'
TORCH_TYPE = torch.bfloat16 if torch.cuda.is_available() and torch.cuda.get_device_capability()[
0] >= 8 else torch.float16
tokenizer = AutoTokenizer.from_pretrained(
MODEL_PATH,
trust_remote_code=True
)
model = AutoModelForCausalLM.from_pretrained(
MODEL_PATH,
torch_dtype=TORCH_TYPE,
trust_remote_code=True,
low_cpu_mem_usage=True,
).eval()
text_only_template = "A chat between a curious user and an artificial intelligence assistant. The assistant gives helpful, detailed, and polite answers to the user's questions. USER: {} ASSISTANT:"
while True:
image_path = input("image path >>>>> ")
if image_path == '':
print('You did not enter image path, the following will be a plain text conversation.')
image = None
text_only_first_query = True
else:
image = Image.open(image_path).convert('RGB')
history = []
while True:
query = input("Human:")
if query == "clear":
break
if image is None:
if text_only_first_query:
query = text_only_template.format(query)
text_only_first_query = False
else:
old_prompt = ''
for _, (old_query, response) in enumerate(history):
old_prompt += old_query + " " + response + "\n"
query = old_prompt + "USER: {} ASSISTANT:".format(query)
if image is None:
input_by_model = model.build_conversation_input_ids(
tokenizer,
query=query,
history=history,
template_version='chat'
)
else:
input_by_model = model.build_conversation_input_ids(
tokenizer,
query=query,
history=history,
images=[image],
template_version='chat'
)
inputs = {
'input_ids': input_by_model['input_ids'].unsqueeze(0).to(DEVICE),
'token_type_ids': input_by_model['token_type_ids'].unsqueeze(0).to(DEVICE),
'attention_mask': input_by_model['attention_mask'].unsqueeze(0).to(DEVICE),
'images': [[input_by_model['images'][0].to(DEVICE).to(TORCH_TYPE)]] if image is not None else None,
}
gen_kwargs = {
"max_new_tokens": 2048,
"pad_token_id": 128002,
}
with torch.no_grad():
outputs = model.generate(**inputs, **gen_kwargs)
outputs = outputs[:, inputs['input_ids'].shape[1]:]
response = tokenizer.decode(outputs[0])
response = response.split("<|end_of_text|>")[0]
print("\nCogVLM2:", response)
history.append((query, response))本模型基于 CogVLM2 许可协议 发布。对于使用 Meta Llama 3 构建的模型,还请同时遵守 LLAMA3_许可协议。
如果您发现我们的工作对您有所帮助,请考虑引用以下论文
@misc{wang2023cogvlm,
title={CogVLM: Visual Expert for Pretrained Language Models},
author={Weihan Wang and Qingsong Lv and Wenmeng Yu and Wenyi Hong and Ji Qi and Yan Wang and Junhui Ji and Zhuoyi Yang and Lei Zhao and Xixuan Song and Jiazheng Xu and Bin Xu and Juanzi Li and Yuxiao Dong and Ming Ding and Jie Tang},
year={2023},
eprint={2311.03079},
archivePrefix={arXiv},
primaryClass={cs.CV}
}