Revisiting N-CNN for Clinical Practice
This work addresses the need for more reliable pain evaluation tools for newborns to aid healthcare professionals, but it is incremental as it builds on an existing method with minor modifications.
The paper revisited the Neonatal Convolutional Neural Network (N-CNN) by optimizing hyperparameters like learning rate and regularization, and introduced soft labels from the Neonatal Facial Coding System to improve classification metrics and explainability for neonatal pain assessment, though calibration performance did not directly improve.
This paper revisits the Neonatal Convolutional Neural Network (N-CNN) by optimizing its hyperparameters and evaluating how they affect its classification metrics, explainability and reliability, discussing their potential impact in clinical practice. We have chosen hyperparameters that do not modify the original N-CNN architecture, but mainly modify its learning rate and training regularization. The optimization was done by evaluating the improvement in F1 Score for each hyperparameter individually, and the best hyperparameters were chosen to create a Tuned N-CNN. We also applied soft labels derived from the Neonatal Facial Coding System, proposing a novel approach for training facial expression classification models for neonatal pain assessment. Interestingly, while the Tuned N-CNN results point towards improvements in classification metrics and explainability, these improvements did not directly translate to calibration performance. We believe that such insights might have the potential to contribute to the development of more reliable pain evaluation tools for newborns, aiding healthcare professionals in delivering appropriate interventions and improving patient outcomes.