Llama-2-7b-hf-mimic-mp-lora

Model Description

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LoRA adapter weights from fine-tuning Llama-2-7b-hf on the MIMIC-III mortality prediction task. The PEFT was used and the model was trained for a maximum of 5 epochs with early stopping, full details can be found at the github repo.

<!-- - **Developed by:** Niall Taylor --> <!-- - **Shared by [Optional]:** More information needed -->

• Model type: Language model LoRA adapter
• Language(s) (NLP): en
• License: apache-2.0
• Parent Model: Llama-2-7b-hf
• Resources for more information:
  • GitHub Repo
  • Associated Paper

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How to Get Started with the Model

Use the code below to get started with the model.

<details> <summary> Click to expand </summary>

from peft import AutoPeftModelForCausalLM, AutoPeftModelForSequenceClassification
from transformers import AutoTokenizer

model_name = "NTaylor/Llama-2-7b-hf-mimic-mp-lora"

# load using AutoPeftModelForSequenceClassification
model = AutoPeftModelForSequenceClassification.from_pretrained(lora_id)

# use base llama tokenizer
tokenizer = AutoTokenizer.from_pretrained("meta-llama/Llama-2-7b-hf")

# example input
text = "82 year old patient initially presented with severe chest pain and shortness of breath. They have a history of heart attacks, and there has been a struggle to bring the heart into a normal rythym ."
inputs = tokenizer(text, return_tensors="pt")
outputs = reloaded_model(**inputs)
# extract prediction from outputs based on argmax of logits
pred = torch.argmax(outputs.logits, axis = -1)
print(f"Prediction is: {pred}") # Prediction is: tensor([1])

</details>

Out-of-Scope Use

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This model and LoRA weights were trained on the MIMIC-III dataset and are not intended for use on other datasets, nor be used in any real clinical setting. The experiments were conducted as a means of exploring the potential of LoRA adapters for clinical NLP tasks, and the model should not be used for any other purpose.

<!-- # Bias, Risks, and Limitations --> <!-- This section is meant to convey both technical and sociotechnical limitations. --> <!-- Significant research has explored bias and fairness issues with language models (see, e.g., [Sheng et al. (2021)](https://aclanthology.org/2021.acl-long.330.pdf) and [Bender et al. (2021)](https://dl.acm.org/doi/pdf/10.1145/3442188.3445922)). Predictions generated by the model may include disturbing and harmful stereotypes across protected classes; identity characteristics; and sensitive, social, and occupational groups. --> <!-- ## Recommendations --> <!-- This section is meant to convey recommendations with respect to the bias, risk, and technical limitations. --> <!-- # 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. --> <!-- More information on training data needed --> <!-- ## Training Procedure --> <!-- This relates heavily to the Technical Specifications. Content here should link to that section when it is relevant to the training procedure. --> <!-- ### Preprocessing More information needed --> <!-- ### Speeds, Sizes, Times --> <!-- This section provides information about throughput, start/end time, checkpoint size if relevant, etc. --> <!-- More information needed --> <!-- # Evaluation --> <!-- This section describes the evaluation protocols and provides the results. --> <!-- ## Testing Data, Factors & Metrics ### Testing Data --> <!-- This should link to a Data Card if possible. --> <!-- More information needed --> <!-- ### Factors --> <!-- These are the things the evaluation is disaggregating by, e.g., subpopulations or domains. --> <!-- More information needed --> <!-- ### Metrics --> <!-- These are the evaluation metrics being used, ideally with a description of why. --> <!-- More information needed --> <!-- ## Results More information needed # Model Examination More information needed # Environmental Impact --> <!-- Total emissions (in grams of CO2eq) and additional considerations, such as electricity usage, go here. Edit the suggested text below accordingly --> <!-- Carbon emissions can be estimated using the [Machine Learning Impact calculator](https://mlco2.github.io/impact#compute) presented in [Lacoste et al. (2019)](https://arxiv.org/abs/1910.09700). - **Hardware Type:** More information needed - **Hours used:** More information needed - **Cloud Provider:** More information needed - **Compute Region:** More information needed - **Carbon Emitted:** More information needed # Technical Specifications [optional] ## Model Architecture and Objective More information needed ## Compute Infrastructure More information needed ### Hardware More information needed ### Software More information needed -->

Citation

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BibTeX:

@misc{taylor2024efficiency,
      title={Efficiency at Scale: Investigating the Performance of Diminutive Language Models in Clinical Tasks}, 
      author={Niall Taylor and Upamanyu Ghose and Omid Rohanian and Mohammadmahdi Nouriborji and Andrey Kormilitzin and David Clifton and Alejo Nevado-Holgado},
      year={2024},
      eprint={2402.10597},
      archivePrefix={arXiv},
      primaryClass={cs.CL}
}

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