Title
Cartesian Genetic Programming For Diagnosis Of Parkinson Disease Through Handwriting Analysis: Performance Vs. Interpretability Issues
Abstract
In the last decades, early disease identification through non-invasive and automatic methodologies has gathered increasing interest from the scientific community. Among others, Parkinson's disease (PD) has received special attention in that it is a severe and progressive neuro-degenerative disease. As a consequence, early diagnosis would provide more effective and prompt care strategies, that cloud successfully influence patients' life expectancy. However, the most performing systems implement the so called black-box approach, which do not provide explicit rules to reach a decision. This lack of interpretability, has hampered the acceptance of those systems by clinicians and their deployment on the field. In this context, we perform a thorough comparison of different machine learning (ML) techniques, whose classification results are characterized by different levels of interpretability. Such techniques were applied for automatically identify PD patients through the analysis of handwriting and drawing samples. Results analysis shows that white-box approaches, such as Cartesian Genetic Programming and Decision Tree, allow to reach a twofold goal: support the diagnosis of PD and obtain explicit classification models, on which only a subset of features (related to specific tasks) were identified and exploited for classification. Obtained classification models provide important insights for the design of non-invasive, inexpensive and easy to administer diagnostic protocols. Comparison of different ML approaches (in terms of both accuracy and interpretability) has been performed on the features extracted from the handwriting and drawing samples included in the publicly available PaHaW and NewHandPD datasets. The experimental findings show that the Cartesian Genetic Programming outperforms the white-box methods in accuracy and the black-box ones in interpretability.
Year
DOI
Venue
2021
10.1016/j.artmed.2020.101984
ARTIFICIAL INTELLIGENCE IN MEDICINE
Keywords
DocType
Volume
Explainable artificial intelligence, Parkinson disease, Evolutionary computation
Journal
111
ISSN
Citations 
PageRank 
0933-3657
1
0.37
References 
Authors
0
4
Name
Order
Citations
PageRank
Antonio Parziale1255.66
Rosa Senatore2132.89
A Della Cioppa338722.13
A. Marcelli410.37