TY - JOUR T1 - A simple Hierarchical Activity Recognition System Using a Gravity Sensor and Accelerometer on a Smartphone AU - Alvin Prayuda Juniarta Dwiyantoro,I Gde Dharma Nugraha,Deokjai Choi JO - International Journal of Technology VL - 7 IS - 5 SP - 291 EP - 319 PY - 2016 DA - 2016/07/28 SN - 2087-2100 DO - http://dx.doi.org/10.14716/ijtech.v7i5.3460 UR - https://ijtech.eng.ui.ac.id/article/view/1891