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.
1from sentence_transformers import SentenceTransformer
2sentences =["This is an example sentence","Each sentence is converted"]34model = SentenceTransformer('{MODEL_NAME}')5embeddings = model.encode(sentences)6print(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
1from transformers import AutoTokenizer, AutoModel
2import torch
345#Mean Pooling - Take attention mask into account for correct averaging6defmean_pooling(model_output, attention_mask):7 token_embeddings = model_output[0]#First element of model_output contains all token embeddings8 input_mask_expanded = attention_mask.unsqueeze(-1).expand(token_embeddings.size()).float()9return torch.sum(token_embeddings * input_mask_expanded,1)/ torch.clamp(input_mask_expanded.sum(1),min=1e-9)101112# Sentences we want sentence embeddings for13sentences =['This is an example sentence','Each sentence is converted']1415# Load model from HuggingFace Hub16tokenizer = AutoTokenizer.from_pretrained('{MODEL_NAME}')17model = AutoModel.from_pretrained('{MODEL_NAME}')1819# Tokenize sentences20encoded_input = tokenizer(sentences, padding=True, truncation=True, return_tensors='pt')2122# Compute token embeddings23with torch.no_grad():24 model_output = model(**encoded_input)2526# Perform pooling. In this case, mean pooling.27sentence_embeddings = mean_pooling(model_output, encoded_input['attention_mask'])2829print("Sentence embeddings:")30print(sentence_embeddings)
Evaluation Results
For an automated evaluation of this model, see the Sentence Embeddings Benchmark: https://seb.sbert.net
Training
The model was trained with the parameters:
DataLoader:
torch.utils.data.dataloader.DataLoader of length 497 with parameters: