🚀 X-ALMA

X-ALMA是基于ALMA-R进行扩展的模型，它将支持的语言数量从6种提升到了50种。该模型采用了即插即用的架构，配备特定语言模块，并搭配精心设计的训练方案。此版本发布了X-ALMA预训练基础模型。

🚀 快速开始

有三种方式可以加载X-ALMA进行翻译。以下是一个将“我爱机器翻译。”翻译成英文的示例（X-ALMA也能够处理多语言开放式问答）。

第一种方式：加载已将特定语言模块合并到基础模型中的合并模型（推荐）

import torch
from transformers import AutoModelForCausalLM
from transformers import AutoTokenizer
from peft import PeftModel

GROUP2LANG = {
1: ["da", "nl", "de", "is", "no", "sv", "af"],
2: ["ca", "ro", "gl", "it", "pt", "es"],
3: ["bg", "mk", "sr", "uk", "ru"],
4: ["id", "ms", "th", "vi", "mg", "fr"],
5: ["hu", "el", "cs", "pl", "lt", "lv"],
6: ["ka", "zh", "ja", "ko", "fi", "et"],
7: ["gu", "hi", "mr", "ne", "ur"],
8: ["az", "kk", "ky", "tr", "uz", "ar", "he", "fa"],
}
LANG2GROUP = {lang: str(group) for group, langs in GROUP2LANG.items() for lang in langs}
group_id = LANG2GROUP["zh"]

model = AutoModelForCausalLM.from_pretrained(f"haoranxu/X-ALMA-13B-Group{group_id}", torch_dtype=torch.float16, device_map="auto")
tokenizer = AutoTokenizer.from_pretrained(f"haoranxu/X-ALMA-13B-Group{group_id}", padding_side='left')

# Add the source sentence into the prompt template
prompt="Translate this from Chinese to English:\nChinese: 我爱机器翻译。\nEnglish:"

# X-ALMA needs chat template but ALMA and ALMA-R don't need it.
chat_style_prompt = [{"role": "user", "content": prompt}]
prompt = tokenizer.apply_chat_template(chat_style_prompt, tokenize=False, add_generation_prompt=True)

input_ids = tokenizer(prompt, return_tensors="pt", padding=True, max_length=40, truncation=True).input_ids.cuda()

# Translation
with torch.no_grad():
generated_ids = model.generate(input_ids=input_ids, num_beams=5, max_new_tokens=20, do_sample=True, temperature=0.6, top_p=0.9)
outputs = tokenizer.batch_decode(generated_ids, skip_special_tokens=True)
print(outputs)

第二种方式：加载基础模型和特定语言模块（推荐）

model = AutoModelForCausalLM.from_pretrained("haoranxu/X-ALMA-13B-Pretrain", torch_dtype=torch.float16, device_map="auto")
model = PeftModel.from_pretrained(model, f"haoranxu/X-ALMA-13B-Group{group_id}")
tokenizer = AutoTokenizer.from_pretrained(f"haoranxu/X-ALMA-13B-Group{group_id}", padding_side='left')

第三种方式：像混合专家模型（MoE）一样加载包含所有特定语言模块的基础模型（需要大显存GPU）

from modeling_xalma import XALMAForCausalLM
model = XALMAForCausalLM.from_pretrained("haoranxu/X-ALMA", torch_dtype=torch.float16, device_map="auto")
tokenizer = AutoTokenizer.from_pretrained("haoranxu/X-ALMA", padding_side='left')

# Add `lang="zh"`: specify the language to instruct the model on which group to use for the third loading method during generation.
generated_ids = model.generate(input_ids=input_ids, num_beams=5, max_new_tokens=20, do_sample=True, temperature=0.6, top_p=0.9, lang="zh")

✨ 主要特性

• 多语言支持：在ALMA - R的基础上，将支持的语言从6种扩展到了50种，涵盖了多种不同语系的语言。
• 即插即用架构：采用了带有特定语言模块的即插即用架构，并且搭配精心设计的训练方案。

📦 模型信息

📚 详细文档

模型引用

@misc{xu2024xalmaplugplay,
      title={X-ALMA: Plug & Play Modules and Adaptive Rejection for Quality Translation at Scale}, 
      author={Haoran Xu and Kenton Murray and Philipp Koehn and Hieu Hoang and Akiko Eriguchi and Huda Khayrallah},
      year={2024},
      eprint={2410.03115},
      archivePrefix={arXiv},
      primaryClass={cs.CL},
      url={https://arxiv.org/abs/2410.03115}, 
}

模型链接

所有X - ALMA的检查点都发布在Hugging Face上：

📄 许可证

本项目采用MIT许可证。