模型:
cross-encoder/ms-marco-MiniLM-L-2-v2
该模型是在 MS Marco Passage Ranking 任务上进行训练的。
该模型可用于信息检索:给定一个查询,将查询与所有可能的段落进行编码(例如,使用ElasticSearch检索)。然后按降序对段落进行排序。更多详细信息请参见 SBERT.net Retrieve & Re-rank 。训练代码可以在这里找到: SBERT.net Training MS Marco 。
from transformers import AutoTokenizer, AutoModelForSequenceClassification import torch model = AutoModelForSequenceClassification.from_pretrained('model_name') tokenizer = AutoTokenizer.from_pretrained('model_name') features = tokenizer(['How many people live in Berlin?', 'How many people live in Berlin?'], ['Berlin has a population of 3,520,031 registered inhabitants in an area of 891.82 square kilometers.', 'New York City is famous for the Metropolitan Museum of Art.'], padding=True, truncation=True, return_tensors="pt") model.eval() with torch.no_grad(): scores = model(**features).logits print(scores)
如果已安装 SentenceTransformers ,则使用预训练模型会更加简单。然后,您可以像这样使用预训练模型:
from sentence_transformers import CrossEncoder model = CrossEncoder('model_name', max_length=512) scores = model.predict([('Query', 'Paragraph1'), ('Query', 'Paragraph2') , ('Query', 'Paragraph3')])
在下表中,我们提供了各种预训练的交叉编码器及其在 TREC Deep Learning 2019 和 MS Marco Passage Reranking 数据集上的性能。
Model-Name | NDCG@10 (TREC DL 19) | MRR@10 (MS Marco Dev) | Docs / Sec |
---|---|---|---|
Version 2 models | |||
cross-encoder/ms-marco-TinyBERT-L-2-v2 | 69.84 | 32.56 | 9000 |
cross-encoder/ms-marco-MiniLM-L-2-v2 | 71.01 | 34.85 | 4100 |
cross-encoder/ms-marco-MiniLM-L-4-v2 | 73.04 | 37.70 | 2500 |
cross-encoder/ms-marco-MiniLM-L-6-v2 | 74.30 | 39.01 | 1800 |
cross-encoder/ms-marco-MiniLM-L-12-v2 | 74.31 | 39.02 | 960 |
Version 1 models | |||
cross-encoder/ms-marco-TinyBERT-L-2 | 67.43 | 30.15 | 9000 |
cross-encoder/ms-marco-TinyBERT-L-4 | 68.09 | 34.50 | 2900 |
cross-encoder/ms-marco-TinyBERT-L-6 | 69.57 | 36.13 | 680 |
cross-encoder/ms-marco-electra-base | 71.99 | 36.41 | 340 |
Other models | |||
nboost/pt-tinybert-msmarco | 63.63 | 28.80 | 2900 |
nboost/pt-bert-base-uncased-msmarco | 70.94 | 34.75 | 340 |
nboost/pt-bert-large-msmarco | 73.36 | 36.48 | 100 |
Capreolus/electra-base-msmarco | 71.23 | 36.89 | 340 |
amberoad/bert-multilingual-passage-reranking-msmarco | 68.40 | 35.54 | 330 |
sebastian-hofstaetter/distilbert-cat-margin_mse-T2-msmarco | 72.82 | 37.88 | 720 |
注意:运行时间是在V100 GPU上计算的。