A Visibility-Based Lower Bound for Android Unlock Patterns.

Jinwoo Lee Jae Woo Seo Kookrae Cho Pil Joong Lee Dae Hyun Yum

Published in: IEICE Trans. Inf. Syst. (2017)

Keyphrases

pattern discovery
lower bound
pattern mining
upper bound
branch and bound
optimal solution
branch and bound algorithm
objective function
lower and upper bounds
np hard
worst case
mobile devices
similar patterns
polynomial approximation