Probabilistic graphical models of dyslexia

Yair Lakretz, Gal Chechik, Naama Friedmann, Michal Rosen-Zvi

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

12 Scopus citations


Reading is a complex cognitive process, errors in which may assume diverse forms. In this study, introducing a novel approach, we use two families of probabilistic graphical models to analyze patterns of reading errors made by dyslexic people: an LDA-based model and two Naïve Bayes models which differ by their assumptions about the generation process of reading errors. The models are trained on a large corpus of reading errors. Results show that a Naïve Bayes model achieves highest accuracy compared to labels given by clinicians (AUC = 0.801 ± 0.05), thus providing the first automated and objective diagnosis tool for dyslexia which is solely based on reading errors data. Results also show that the LDA-based model best captures patterns of reading errors and could therefore contribute to the understanding of dyslexia and to future improvement of the diagnostic procedure. Finally, we draw on our results to shed light on a theoretical debate about the definition and heterogeneity of dyslexia. Our results support a model assuming multiple dyslexia subtypes, that of a heterogeneous view of dyslexia.

Original languageEnglish
Title of host publicationKDD 2015 - Proceedings of the 21st ACM SIGKDD Conference on Knowledge Discovery and Data Mining
PublisherAssociation for Computing Machinery
Number of pages10
ISBN (Electronic)9781450336642
StatePublished - 10 Aug 2015
Event21st ACM SIGKDD Conference on Knowledge Discovery and Data Mining, KDD 2015 - Sydney, Australia
Duration: 10 Aug 201513 Aug 2015

Publication series

NameProceedings of the ACM SIGKDD International Conference on Knowledge Discovery and Data Mining


Conference21st ACM SIGKDD Conference on Knowledge Discovery and Data Mining, KDD 2015


  • Diagnosis
  • Dyslexia
  • Latent dirichlet allocation
  • Naïve bayes
  • Probabilistic graphical models


Dive into the research topics of 'Probabilistic graphical models of dyslexia'. Together they form a unique fingerprint.

Cite this