paraphrase multilingual MiniLM L12 v2

提供商sentence-transformers
分类sentence-similarity
许可证apache-2.0
下载量320.0K
星标74

简介

这是一个轻量级且高效的多语言文本向量化模型,专门用于将句子转换为高维向量,从而计算文本间的语义相似度。相比于体积庞大的 LLM,它在资源占用极低的情况下,能快速处理包括中文在内的多种语言。对于开发者而言,它是构建 RAG(检索增强生成)系统中向量检索环节的理想选择,尤其适合部署在端侧或对响应延迟要求极高的生产环境。上手难度低,可直接通过 sentence-transformers 库调用,是替代昂贵 API 接口的优秀开源方案。

核心亮点

  • 支持多语言语义对齐,中文检索效果稳定
  • 模型体积小、推理速度快,极低资源占用
  • 核心用于语义相似度计算与文本聚类
  • RAG 架构中高效的向量化(Embedding)组件

使用方法

安装依赖
# 安装 Hugging Face transformers
pip install transformers torch
SDK 使用
# 使用 transformers 加载模型
from transformers import AutoModel, AutoTokenizer

model = AutoModel.from_pretrained("sentence-transformers/paraphrase-multilingual-MiniLM-L12-v2")
tokenizer = AutoTokenizer.from_pretrained("sentence-transformers/paraphrase-multilingual-MiniLM-L12-v2")

Hugging Face 下载

我们推荐使用命令行或者 Hugging Face Hub SDK 来进行模型的下载。

操作指引:在下载前,请先通过如下命令安装 huggingface_hub:

操作指引
pip install -U huggingface_hub

命令行下载

下载完整模型库

下载完整模型库
huggingface-cli download sentence-transformers/paraphrase-multilingual-MiniLM-L12-v2

下载单个文件到指定本地文件夹(以下载 config.json 到当前路径下 ./dir 目录为例)

下载单个文件到指定本地文件夹(以下载 config.json 到当前路径下 ./dir 目录为例)
huggingface-cli download sentence-transformers/paraphrase-multilingual-MiniLM-L12-v2 config.json --local-dir ./dir

更多命令行下载选项,可参见官方文档

SDK 下载

SDK 下载
# 模型下载
from huggingface_hub import snapshot_download
model_dir = snapshot_download('sentence-transformers/paraphrase-multilingual-MiniLM-L12-v2')

Git 下载

请确保 lfs 已经被正确安装

Git 下载
git lfs install
git clone https://huggingface.co/sentence-transformers/paraphrase-multilingual-MiniLM-L12-v2

如果您希望跳过 lfs 大文件下载,可以使用如下命令

跳过 LFS
GIT_LFS_SKIP_SMUDGE=1 git clone https://huggingface.co/sentence-transformers/paraphrase-multilingual-MiniLM-L12-v2

模型文件托管在 Hugging Face Hub,使用 HF CLI / SDK / Git 直接下载,不经过本站。

PyTorch / Transformers 使用

安装 Transformers

安装 Transformers
pip install -U transformers torch

模型加载和推理

模型加载和推理
from transformers import AutoModelForCausalLM, AutoTokenizer

model = AutoModelForCausalLM.from_pretrained('sentence-transformers/paraphrase-multilingual-MiniLM-L12-v2')
tokenizer = AutoTokenizer.from_pretrained('sentence-transformers/paraphrase-multilingual-MiniLM-L12-v2')

模型下载

我们推荐使用命令行或者 ModelScope SDK 来进行模型的下载。

操作指引:在下载前,请先通过如下命令安装 ModelScope:

操作指引
pip install modelscope

命令行下载

下载完整模型库

下载完整模型库
modelscope download --model sentence-transformers/paraphrase-multilingual-MiniLM-L12-v2

下载单个文件到指定本地文件夹(以下载 README.md 到当前路径下 dir 目录为例)

下载单个文件到指定本地文件夹(以下载 README.md 到当前路径下 dir 目录为例)
modelscope download --model sentence-transformers/paraphrase-multilingual-MiniLM-L12-v2 README.md --local_dir ./dir

更多更丰富的命令行下载选项,可参见具体文档

SDK 下载

SDK 下载
# 模型下载
from modelscope import snapshot_download
model_dir = snapshot_download('sentence-transformers/paraphrase-multilingual-MiniLM-L12-v2')

Git 下载

请确保 lfs 已经被正确安装

Git 下载
git lfs install
git clone https://www.modelscope.cn/sentence-transformers/paraphrase-multilingual-MiniLM-L12-v2.git

如果您希望跳过 lfs 大文件下载,可以使用如下命令

跳过 LFS
GIT_LFS_SKIP_SMUDGE=1 git clone https://www.modelscope.cn/sentence-transformers/paraphrase-multilingual-MiniLM-L12-v2.git

ModelScope 模型页直接下载模型文件;无需将模型文件放在本站服务器。

Notebook 快速开发

下载并安装 ModelScope library

下载并安装 ModelScope library
pip install "modelscope[audio,cv,nlp,multi-modal,science]" -f https://modelscope.oss-cn-beijing.aliyuncs.com/releases/repo.html

模型加载和推理

模型加载和推理
from modelscope.pipelines import pipeline
from modelscope.utils.constant import Tasks

p = pipeline('text-generation', 'sentence-transformers/paraphrase-multilingual-MiniLM-L12-v2')

完整文档

来源: HuggingFace

---
language:

  • multilingual

  • ar

  • bg

  • ca

  • cs

  • da

  • de

  • el

  • en

  • es

  • et

  • fa

  • fi

  • fr

  • gl

  • gu

  • he

  • hi

  • hr

  • hu

  • hy

  • id

  • it

  • ja

  • ka

  • ko

  • ku

  • lt

  • lv

  • mk

  • mn

  • mr

  • ms

  • my

  • nb

  • nl

  • pl

  • pt

  • ro

  • ru

  • sk

  • sl

  • sq

  • sr

  • sv

  • th

  • tr

  • uk

  • ur

  • vi

license: apache-2.0
library_name: sentence-transformers
tags:
  • sentence-transformers

  • feature-extraction

  • sentence-similarity

  • transformers

language_bcp47:
  • fr-ca

  • pt-br

  • zh-cn

  • zh-tw

pipeline_tag: sentence-similarity
---

sentence-transformers/paraphrase-multilingual-MiniLM-L12-v2

This is a sentence-transformers model: It maps sentences & paragraphs to a 384 dimensional dense vector space and can be used for tasks like clustering or semantic search.

Usage (Sentence-Transformers)

Using this model becomes easy when you have sentence-transformers installed:

code
pip install -U sentence-transformers

Then you can use the model like this:

python
from sentence_transformers import SentenceTransformer
sentences = ["This is an example sentence", "Each sentence is converted"]

model = SentenceTransformer('sentence-transformers/paraphrase-multilingual-MiniLM-L12-v2')
embeddings = model.encode(sentences)
print(embeddings)

Usage (HuggingFace Transformers)

Without sentence-transformers, you can use the model like this: First, you pass your input through the transformer model, then you have to apply the right pooling-operation on-top of the contextualized word embeddings.
python
from transformers import AutoTokenizer, AutoModel
import torch

Mean Pooling - Take attention mask into account for correct averaging

def mean_pooling(model_output, attention_mask): token_embeddings = model_output[0] #First element of model_output contains all token embeddings input_mask_expanded = attention_mask.unsqueeze(-1).expand(token_embeddings.size()).float() return torch.sum(token_embeddings * input_mask_expanded, 1) / torch.clamp(input_mask_expanded.sum(1), min=1e-9)

Sentences we want sentence embeddings for

sentences = ['This is an example sentence', 'Each sentence is converted']

Load model from HuggingFace Hub

tokenizer = AutoTokenizer.from_pretrained('sentence-transformers/paraphrase-multilingual-MiniLM-L12-v2') model = AutoModel.from_pretrained('sentence-transformers/paraphrase-multilingual-MiniLM-L12-v2')

Tokenize sentences

encoded_input = tokenizer(sentences, padding=True, truncation=True, return_tensors='pt')

Compute token embeddings

with torch.no_grad(): model_output = model(**encoded_input)

Perform pooling. In this case, max pooling.

sentence_embeddings = mean_pooling(model_output, encoded_input['attention_mask'])

print("Sentence embeddings:")
print(sentence_embeddings)

Full Model Architecture

code
SentenceTransformer(
  (0): Transformer({'max_seq_length': 128, 'do_lower_case': False}) with Transformer model: BertModel 
  (1): Pooling({'word_embedding_dimension': 384, 'pooling_mode_cls_token': False, 'pooling_mode_mean_tokens': True, 'pooling_mode_max_tokens': False, 'pooling_mode_mean_sqrt_len_tokens': False})
)

Citing & Authors

This model was trained by sentence-transformers.

If you find this model helpful, feel free to cite our publication Sentence-BERT: Sentence Embeddings using Siamese BERT-Networks:
``bibtex
@inproceedings{reimers-2019-sentence-bert,
title = "Sentence-BERT: Sentence Embeddings using Siamese BERT-Networks",
author = "Reimers, Nils and Gurevych, Iryna",
booktitle = "Proceedings of the 2019 Conference on Empirical Methods in Natural Language Processing",
month = "11",
year = "2019",
publisher = "Association for Computational Linguistics",
url = "http://arxiv.org/abs/1908.10084",
}
``