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Deep Learning and Procrustes Analysis for Early Dysgraphia Risk Detection with a Tablet Application.

Eugenio LomurnoLinda Greta DuiMadhurii GattoMatteo BollettinoMatteo MatteucciSimona Ferrante
Published in: Life (Basel, Switzerland) (2023)
Dysgraphia is a neurodevelopmental disorder specific to handwriting. Classical diagnosis is based on the evaluation of speed and quality of the final handwritten text: it is therefore delayed as it is conducted only when handwriting is mastered, in addition to being highly language-dependent and not always easily accessible. This work presents a solution able to anticipate dysgraphia screening when handwriting has not been learned yet, in order to prevent negative consequences on the individuals' academic and daily life. To quantitatively measure handwriting-related characteristics and monitor their evolution over time, we leveraged the Play-Draw-Write iPad application to collect data produced by children from the last year of kindergarten through the second year of elementary school. We developed a meta-model based on deep learning techniques (ensemble techniques and Quasi-SVM) which receives as input raw signals collected after a processing phase based on dimensionality reduction techniques (autoencoder and Time2Vec) and mathematical tools for high-level feature extraction (Procrustes Analysis). The final dysgraphia classifier can identify "at-risk" children with 84.62% Accuracy and 100% Precision more than two years earlier than current diagnostic techniques.
Keyphrases
  • deep learning
  • convolutional neural network
  • young adults
  • physical activity
  • machine learning
  • mental health
  • artificial intelligence
  • autism spectrum disorder
  • big data