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--- |
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pipeline_tag: sentence-similarity |
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tags: |
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- sentence-transformers |
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- feature-extraction |
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- sentence-similarity |
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language: en |
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license: other |
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datasets: |
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- FremyCompany/BioLORD-Dataset |
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--- |
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# FremyCompany/BioLORD-STAMB2-v1 |
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This model was trained using BioLORD, a new pre-training strategy for producing meaningful representations for clinical sentences and biomedical concepts. State-of-the-art methodologies operate by maximizing the similarity in representation of names referring to the same concept, and preventing collapse through contrastive learning. However, because biomedical names are not always self-explanatory, it sometimes results in non-semantic representations. BioLORD overcomes this issue by grounding its concept representations using definitions, as well as short descriptions derived from a multi-relational knowledge graph consisting of biomedical ontologies. Thanks to this grounding, our model produces more semantic concept representations that match more closely the hierarchical structure of ontologies. BioLORD establishes a new state of the art for text similarity on both clinical sentences (MedSTS) and biomedical concepts (MayoSRS). |
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This model is based on [sentence-transformers/all-mpnet-base-v2](https://huggingface.co/sentence-transformers/all-mpnet-base-v2) and was further finetuned on the [BioLORD-Dataset](https://huggingface.co/datasets/FremyCompany/BioLORD-Dataset). |
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<img width="640" src="https://s3.amazonaws.com/moonup/production/uploads/1665568401241-5f04e8865d08220171a0ad3f.png" /> |
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## General purpose |
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This is a [sentence-transformers](https://www.SBERT.net) model: It maps sentences & paragraphs to a 768 dimensional dense vector space and can be used for tasks like clustering or semantic search. |
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## Citation |
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This dataset accompanies the [BioLORD: Learning Ontological Representations from Definitions](https://TODO/) paper, accepted in the EMNLP 2022 Findings. When you use this dataset, please cite the original paper as follows: |
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```latex |
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TODO |
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``` |
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## Usage (Sentence-Transformers) |
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Using this model becomes easy when you have [sentence-transformers](https://www.SBERT.net) installed: |
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``` |
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pip install -U sentence-transformers |
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``` |
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Then you can use the model like this: |
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```python |
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from sentence_transformers import SentenceTransformer |
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sentences = ["Cat scratch injury", "Cat scratch disease", "Bartonellosis"] |
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model = SentenceTransformer('FremyCompany/BioLORD-STAMB2-v1') |
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embeddings = model.encode(sentences) |
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print(embeddings) |
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``` |
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## Usage (HuggingFace Transformers) |
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Without [sentence-transformers](https://www.SBERT.net), 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. |
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```python |
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from transformers import AutoTokenizer, AutoModel |
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import torch |
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import torch.nn.functional as F |
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#Mean Pooling - Take attention mask into account for correct averaging |
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def mean_pooling(model_output, attention_mask): |
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token_embeddings = model_output[0] #First element of model_output contains all token embeddings |
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input_mask_expanded = attention_mask.unsqueeze(-1).expand(token_embeddings.size()).float() |
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return torch.sum(token_embeddings * input_mask_expanded, 1) / torch.clamp(input_mask_expanded.sum(1), min=1e-9) |
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# Sentences we want sentence embeddings for |
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sentences = ["Cat scratch injury", "Cat scratch disease", "Bartonellosis"] |
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# Load model from HuggingFace Hub |
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tokenizer = AutoTokenizer.from_pretrained('FremyCompany/BioLORD-STAMB2-v1') |
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model = AutoModel.from_pretrained('FremyCompany/BioLORD-STAMB2-v1') |
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# Tokenize sentences |
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encoded_input = tokenizer(sentences, padding=True, truncation=True, return_tensors='pt') |
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# Compute token embeddings |
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with torch.no_grad(): |
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model_output = model(**encoded_input) |
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# Perform pooling |
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sentence_embeddings = mean_pooling(model_output, encoded_input['attention_mask']) |
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# Normalize embeddings |
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sentence_embeddings = F.normalize(sentence_embeddings, p=2, dim=1) |
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print("Sentence embeddings:") |
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print(sentence_embeddings) |
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``` |
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