Publication detail

Fractional Order Derivatives Evaluation in Computerized Assessment of Handwriting Difficulties in School-aged Children

ZVONČÁK, V. MUCHA, J. GALÁŽ, Z. MEKYSKA, J. ŠAFÁROVÁ, K. FAÚNDEZ ZANUY, M. SMÉKAL, Z.

Original Title

Fractional Order Derivatives Evaluation in Computerized Assessment of Handwriting Difficulties in School-aged Children

Type

conference paper

Language

English

Original Abstract

Handwriting difficulties (HD) affects some of the school-aged children and its current prevalence rate is between 5-34%. Children at primary schools have to face rising cognitive demands that the handwriting represents, and some of them are not able to do so. As a result, they tend to make mistakes and their written product is dysfluent and has poor legibility. HD can also lead them to lower self-esteem, learning difficulties and ultimately to less academic achievements. For this reason occupational therapists are trying to identify HD through examination as early as possible. We extracted online handwriting signals of children using digitizing tablets. Handwriting Proficiency Screening Questionnaire for Children (HPSQ-C) was used to score severity of HD in children's written product. To advance current computerized analysis of online handwriting, we employed fractional order derivatives features (FD) together with conventional features. We selected the significant features for HD identification and utilize correlation analysis together with Mann-Whitney U-test to evaluate their discrimination power. We can conclude that FD-based features bring benefits of more robust quantification of in-air movements as opposed to the conventionally used ones. Finally, we have shown that utilization of FD can be beneficial for computerized assessment of HD but should be further optimized and evaluated with advanced statistical or machine learning methods.

Keywords

fractal calculus; fractional derivative; handwriting difficulties; kinematic analysis; online handwriting; developmental dysgraphia

Authors

ZVONČÁK, V.; MUCHA, J.; GALÁŽ, Z.; MEKYSKA, J.; ŠAFÁROVÁ, K.; FAÚNDEZ ZANUY, M.; SMÉKAL, Z.

Released

31. 10. 2019

ISBN

978-1-7281-5764-1

Book

11th International Congress on Ultra Modern Telecommunications and Control Systems and Workshops (ICUMT)

Pages from

210

Pages to

215

Pages count

6

URL

https://ieeexplore.ieee.org/document/8970811

BibTex

@inproceedings{BUT159724,
  author="ZVONČÁK, V. and MUCHA, J. and GALÁŽ, Z. and MEKYSKA, J. and ŠAFÁROVÁ, K. and FAÚNDEZ ZANUY, M. and SMÉKAL, Z.",
  title="Fractional Order Derivatives Evaluation in Computerized Assessment of Handwriting Difficulties in School-aged Children",
  booktitle="11th International Congress on Ultra Modern Telecommunications and Control Systems and Workshops (ICUMT)",
  year="2019",
  pages="210--215",
  doi="10.1109/ICUMT48472.2019.8970811",
  isbn="978-1-7281-5764-1",
  url="https://ieeexplore.ieee.org/document/8970811"
}