The DARWIN data set is provided by:

N. D. Cilia, C. De Stefano, F. Fontanella, A. S. Di Freca, An experimental protocol to support cognitive impairment diagnosis by using handwriting analysis, Procedia Computer Science 141 (2018) 466–471. https://doi.org/10.1016/j.procs.2018.10.141

N. D. Cilia, G. De Gregorio, C. De Stefano, F. Fontanella, A. Marcelli, A. Parziale, Diagnosing Alzheimer’s disease from online handwriting: A novel dataset and performance benchmarking, Engineering Applications of Artificial Intelligence, Vol. 111 (20229) 104822. https://doi.org/10.1016/j.engappai.2022.104822