Jong-gak Choe, YongJin Kwon, Vol. 13, No. 10, October 30, 2019
10.3837/tiis.2019.10.005

• Movement direction detection
• Data Analysis
• O2O service
• BLE beacon
• RSSI

Yongjin Kwon, Seonguk Heo, Kyuchang Kang, Changseok Bae, Vol. 8, No. 6, June 26, 2014
10.3837/tiis.2014.06.015

• Activity recognition
• Lifelog
• sampling rate
• Particle swarm optimization (PSO)
• adaptive boundary correction (ABC)