Effect of Stroke-level Intra-writer Normalization on Computerized Assessment of Developmental Dysgraphia

Vojtech Zvoncak, Jiri Mekyska, Katarina Safarova, Zoltan Galaz, Jan Mucha, Tomas Kiska, Zdenek Smekal, Barbora Losenicka, Barbora Cechova, Pavlina Francova, Marcos Faundez-Zanuy, Sara Rosenblum

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Developmental dysgraphia (DD) can negatively influence writing speed, legibility of written product, and even planning and content generation. This could have a detrimental impact on self-expression, and communication in childhood. The goal of this study is to investigate new intra-writer and self-esteem normalization methods (IWN) in direction of improving computerized DD assessment based on the quantitative analysis of online handwriting. For this purpose we enrolled 97 children who wrote a paragraph using a digitizing tablet. Their handwriting proficiency was rated by the Handwriting Proficiency Screening Questionnaire (HPSQ). The handwriting was parametrized using a conventional set of features that were consequently normalized by four newly designed IWN. Based on the results we observed that a stroke-level £2 norm normalization decreased the computerized DD assessment error from 23 % to 18 %. This study proves that the stroke-level IWN has the significant potential in the field of computerized DD diagnosis and assessment.

Original languageEnglish
Title of host publication10th International Congress on Ultra Modern Telecommunications and Control Systems and Workshops, ICUMT 2018
PublisherIEEE Computer Society
ISBN (Electronic)9781538693605
DOIs
StatePublished - 2 Jul 2018
Event10th International Congress on Ultra Modern Telecommunications and Control Systems and Workshops, ICUMT 2018 - Moscow, Russian Federation
Duration: 5 Nov 20189 Nov 2018

Publication series

NameInternational Congress on Ultra Modern Telecommunications and Control Systems and Workshops
Volume2018-November
ISSN (Print)2157-0221
ISSN (Electronic)2157-023X

Conference

Conference10th International Congress on Ultra Modern Telecommunications and Control Systems and Workshops, ICUMT 2018
Country/TerritoryRussian Federation
CityMoscow
Period5/11/189/11/18

Bibliographical note

Publisher Copyright:
© 2018 IEEE.

Keywords

  • Developmental dysgraphia
  • Digitizer
  • Intra-writer normalization
  • Kinematic analysis
  • Machine learning
  • Online handwriting

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Control and Systems Engineering

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