LineKing: Coffee Shop Wait-Time Monitoring Using Smartphones
Please cite this item using this persistent URLhttp://hdl.handle.net/11693/20826
IEEE Transactions on Mobile Computing
- Research Paper 
Institute of Electrical and Electronics Engineers Inc.
This article describes LineKing, a crowdsensing system for monitoring and forecasting coffee shop line wait times. LineKing consists of a smartphone component that provides automatic and accurate wait-time detection, and a cloud backend that uses the collected data to provide accurate wait-time estimation. LineKing is used on a daily basis by hundreds of users to monitor the wait-times of a coffee shop in the University at Buffalo, SUNY. The novel wait-time estimation algorithms of LineKing deployed at the cloud backend provide median absolute errors of less than 3 minutes. © 2002-2012 IEEE.