Open AccessFast and Fair Handling of Multimedia CAPTCHA Flows
Author(s) -
Ageliki Tsioliaridou,
Chi Zhang,
Christos Liaskos
Publication year - 2015
Publication title -
international journal of interactive mobile technologies (ijim)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.316
H-Index - 16
ISSN - 1865-7923
DOI - 10.3991/ijim.v9i4.4644
Subject(s) - captcha , computer science , heuristics , convergence (economics) , scheme (mathematics) , transmission (telecommunications) , task (project management) , multimedia , voice over ip , quality (philosophy) , distributed computing , computer network , artificial intelligence , the internet , world wide web , telecommunications , economics , economic growth , mathematics , philosophy , operating system , management , epistemology , mathematical analysis
Multimedia CAPTCHAs play a crucial role in bot filtering policies for VoIP applications. Network flows carrying CAPTCHA content have a very small lifespan and require high transmission quality, making for special handling at transport layer. The present study introduces an analysis-derived, rapidly converging control mechanism for CAPTCHA flows. Instead of relying on generic heuristics, the novel scheme enables the flows to estimate their deviation from the equilibrium and adapt to it in a single step. Simulations demonstrate the high efficiency and convergence speed of the scheme, highlighting its unique fitness for the appointed task.
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom