Authors: Brodić, Darko
Amelio, Alessia
Draganov-Rumenov, Ivo
Janković, Radmila 
Title: Exploring the usability of the dice CAPTCHA by advanced statistical analysis
Journal: Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume: 11089 LNAI
First page: 152
Last page: 162
Conference: 18th International Conference on Artificial Intelligence: Methodology, Systems, and Applications, AIMSA 2018; Varna; Bulgaria; 12 September 2018 through 14 September 2018
Issue Date: 1-Jan-2018
Rank: M33
ISBN: 978-3-319-99343-0
ISSN: 0302-9743
DOI: 10.1007/978-3-319-99344-7_14
This paper introduces a new study of the Dice CAPTCHA usability based on advanced statistical analysis. An experiment is performed on a population of 197 Internet users, characterised by age and Internet experiences, to which the solution to the Dice CAPTCHA is required on a laptop or tablet computer. The response time, which is the solution time to successfully solve the CAPTCHA, together with the number of tries are registered for each user. Then, the collected data are subjected to association rule mining for analysing the dependence of the response time to solve the CAPTCHA in a given number of tries on the co-occurrence of the user’s features. This analysis is very useful to understand the co-occurrence of factors influencing the solution to the CAPTCHA, and accordingly, to realise which CAPTCHA is closer to the “ideal” CAPTCHA.
Keywords: Association rules | Dice CAPTCHA | FP-Growth | Statistics analysis | Usability
Publisher: Springer Link
Project: Development and application of distributed system for monitoring and control of electrical energy consumption for large consumers 
Development of new information and communication technologies, based on advanced mathematical methods, with applications in medicine, telecommunications, power systems, protection of national heritage and education 

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