Update README.md

README.md

@@ -30,14 +30,164 @@ model = AutoAdapterModel.from_pretrained("allenai/specter2_aug2023refresh_base")
 adapter_name = model.load_adapter("allenai/specter2_aug2023refresh", source="hf", set_active=True)
 ```
 
-## Architecture & Training
+**\*\*\*\*\*\*Update\*\*\*\*\*\***
 
-<!-- Add some description here -->
+This update introduces a new set of SPECTER 2.0 models with the base transformer encoder pre-trained on an extended citation dataset containing more recent papers.
+For benchmarking purposes please use the existing SPECTER 2.0 models w/o the **aug2023refresh** suffix viz. [allenai/specter2_base](https://huggingface.co/allenai/specter2_base).
 
-## Evaluation results
+# SPECTER 2.0 (Base)
+SPECTER 2.0 is the successor to [SPECTER](https://huggingface.co/allenai/specter) and is capable of generating task specific embeddings for scientific tasks when paired with [adapters](https://huggingface.co/models?search=allenai/specter-2_).
+This is the base model to be used along with the adapters.
+Given the combination of title and abstract of a scientific paper or a short texual query, the model can be used to generate effective embeddings to be used in downstream applications.
 
-<!-- Add some description here -->
+**Note:For general embedding purposes, please use [allenai/specter2](https://huggingface.co/allenai/specter2).**
+
+**To get the best performance on a downstream task type please load the associated adapter with the base model as in the example below.**
+
+# Model Details
+
+## Model Description
+
+SPECTER 2.0 has been trained on over 6M triplets of scientific paper citations, which are available [here](https://huggingface.co/datasets/allenai/scirepeval/viewer/cite_prediction_new/evaluation).
+Post that it is trained with additionally attached task format specific adapter modules on all the [SciRepEval](https://huggingface.co/datasets/allenai/scirepeval) training tasks.
+
+Task Formats trained on:
+- Classification
+- Regression
+- Proximity
+- Adhoc Search
+
+  
+It builds on the work done in [SciRepEval: A Multi-Format Benchmark for Scientific Document Representations](https://api.semanticscholar.org/CorpusID:254018137) and we evaluate the trained model on this benchmark as well.
+
+
+
+- **Developed by:** Amanpreet Singh, Mike D'Arcy, Arman Cohan, Doug Downey, Sergey Feldman
+- **Shared by :** Allen AI
+- **Model type:** bert-base-uncased + adapters
+- **License:** Apache 2.0
+- **Finetuned from model:** [allenai/scibert](https://huggingface.co/allenai/scibert_scivocab_uncased).
+
+## Model Sources
+
+<!-- Provide the basic links for the model. -->
+
+- **Repository:** [https://github.com/allenai/SPECTER2_0](https://github.com/allenai/SPECTER2_0)
+- **Paper:** [https://api.semanticscholar.org/CorpusID:254018137](https://api.semanticscholar.org/CorpusID:254018137)
+- **Demo:** [Usage](https://github.com/allenai/SPECTER2_0/blob/main/README.md)
+
+# Uses
+
+<!-- Address questions around how the model is intended to be used, including the foreseeable users of the model and those affected by the model. -->
+
+## Direct Use
+
+|Model|Name and HF link|Description|
+|--|--|--|
+|Retrieval*|[allenai/specter2_aug2023refresh_proximity](https://huggingface.co/allenai/specter2_aug2023refresh)|Encode papers as queries and candidates eg. Link Prediction, Nearest Neighbor Search|
+|Adhoc Query|[allenai/specter2_aug2023refresh_adhoc_query](https://huggingface.co/allenai/specter2_aug2023refresh_adhoc_query)|Encode short raw text queries for search tasks. (Candidate papers can be encoded with proximity)|
+|Classification|[allenai/specter2_aug2023refresh_classification](https://huggingface.co/allenai/specter2_aug2023refresh_classification)|Encode papers to feed into linear classifiers as features|
+|Regression|[allenai/specter2_aug2023refresh_regression](https://huggingface.co/allenai/specter2_aug2023refresh_regression)|Encode papers to feed into linear regressors as features|
+
+*Retrieval model should suffice for downstream task types not mentioned above
+
+```python
+from transformers import AutoTokenizer, AutoModel
+
+# load model and tokenizer
+tokenizer = AutoTokenizer.from_pretrained('allenai/specter2_aug2023refresh_base')
+
+#load base model
+model = AutoModel.from_pretrained('allenai/specter2_aug2023refresh_base')
+
+#load the adapter(s) as per the required task, provide an identifier for the adapter in load_as argument and activate it
+model.load_adapter("allenai/specter2_aug2023refresh", source="hf", load_as="specter2_proximity", set_active=True)
+
+papers = [{'title': 'BERT', 'abstract': 'We introduce a new language representation model called BERT'},
+          {'title': 'Attention is all you need', 'abstract': ' The dominant sequence transduction models are based on complex recurrent or convolutional neural networks'}]
+
+# concatenate title and abstract
+text_batch = [d['title'] + tokenizer.sep_token + (d.get('abstract') or '') for d in papers]
+# preprocess the input
+inputs = self.tokenizer(text_batch, padding=True, truncation=True,
+                                   return_tensors="pt", return_token_type_ids=False, max_length=512)
+output = model(**inputs)
+# take the first token in the batch as the embedding
+embeddings = output.last_hidden_state[:, 0, :]
+```
+
+## Downstream Use
+
+<!-- This section is for the model use when fine-tuned for a task, or when plugged into a larger ecosystem/app -->
+
+For evaluation and downstream usage, please refer to [https://github.com/allenai/scirepeval/blob/main/evaluation/INFERENCE.md](https://github.com/allenai/scirepeval/blob/main/evaluation/INFERENCE.md).
+
+# Training Details
+
+## Training Data
+
+<!-- This should link to a Data Card, perhaps with a short stub of information on what the training data is all about as well as documentation related to data pre-processing or additional filtering. -->
+
+The base model is trained on citation links between papers and the adapters are trained on 8 large scale tasks across the four formats.
+All the data is a part of SciRepEval benchmark and is available [here](https://huggingface.co/datasets/allenai/scirepeval).
+
+The citation link are triplets in the form 
+
+```json
+{"query": {"title": ..., "abstract": ...}, "pos": {"title": ..., "abstract": ...}, "neg": {"title": ..., "abstract": ...}}
+```
+
+consisting of a query paper, a positive citation and a negative which can be from the same/different field of study as the query or citation of a citation.
+
+## Training Procedure 
+
+Please refer to the [SPECTER paper](https://api.semanticscholar.org/CorpusID:215768677).
+
+
+### Training Hyperparameters
+
+
+The model is trained in two stages using [SciRepEval](https://github.com/allenai/scirepeval/blob/main/training/TRAINING.md):
+- Base Model: First a base model is trained on the above citation triplets.
+``` batch size = 1024, max input length = 512, learning rate = 2e-5, epochs = 2 warmup steps = 10% fp16```
+- Adapters: Thereafter, task format specific adapters are trained on the SciRepEval training tasks, where 600K triplets are sampled from above and added to the training data as well.
+``` batch size = 256, max input length = 512, learning rate = 1e-4, epochs = 6 warmup = 1000 steps fp16```
+
+
+# Evaluation
+
+We evaluate the model on [SciRepEval](https://github.com/allenai/scirepeval), a large scale eval benchmark for scientific embedding tasks which which has [SciDocs] as a subset.
+We also evaluate and establish a new SoTA on [MDCR](https://github.com/zoranmedic/mdcr), a large scale citation recommendation benchmark.
+
+|Model|SciRepEval In-Train|SciRepEval Out-of-Train|SciRepEval Avg|MDCR(MAP, Recall@5)|
+|--|--|--|--|--|
+|[BM-25](https://api.semanticscholar.org/CorpusID:252199740)|n/a|n/a|n/a|(33.7, 28.5)|
+|[SPECTER](https://huggingface.co/allenai/specter)|54.7|57.4|68.0|(30.6, 25.5)|
+|[SciNCL](https://huggingface.co/malteos/scincl)|55.6|57.8|69.0|(32.6, 27.3)|
+|[SciRepEval-Adapters](https://huggingface.co/models?search=scirepeval)|61.9|59.0|70.9|(35.3, 29.6)|
+|[SPECTER 2.0-Adapters](https://huggingface.co/models?search=allenai/specter-2)|**62.3**|**59.2**|**71.2**|**(38.4, 33.0)**|
+
+Please cite the following works if you end up using SPECTER 2.0:
+
+[SPECTER paper](https://api.semanticscholar.org/CorpusID:215768677):  
+
+```bibtex
+@inproceedings{specter2020cohan,
+  title={{SPECTER: Document-level Representation Learning using Citation-informed Transformers}},
+  author={Arman Cohan and Sergey Feldman and Iz Beltagy and Doug Downey and Daniel S. Weld},
+  booktitle={ACL},
+  year={2020}
+}
+```
+[SciRepEval paper](https://api.semanticscholar.org/CorpusID:254018137)
+```bibtex
+@article{Singh2022SciRepEvalAM,
+  title={SciRepEval: A Multi-Format Benchmark for Scientific Document Representations},
+  author={Amanpreet Singh and Mike D'Arcy and Arman Cohan and Doug Downey and Sergey Feldman},
+  journal={ArXiv},
+  year={2022},
+  volume={abs/2211.13308}
+}
+```
 
-## Citation
 
-<!-- Add some description here -->