UI/UE
Record Fingerprint w/out User Knowledge
Landmark on Cross
Turn Guide
Wrong Direction Alarm
Solution: Accelerometer & Gryoscope
Step Length Learning
Body Height & Gender
Low-complex Machine Learning on Mobile
Magnetic Orientation Jitter
Use Gyroscope for Verification
Response Time
Fast Activity Switch Detection
Speed up WiFi Scan Response
Movement and WiFi Scan Sync
Buffered WiFi Scan Results
Calculate when Step Listener is Activated
Combine Moving Direction by Gyroscope
WiFi Fingerprint
Unstability
Time Variation
Landmarks + WiFiSLAM + Learning
Real-time Fingerprint Updating by Rx/Tx Switch at APs
Routine Maintanence
Space Variation
Mobile Height
Hardware Inconsistency
Same Mobile
Smoothing Algorithm
Depend on Hardware Implementation
Environmental Change
Keep LOS for Landmarks
Similarity Metric
Cosine Similarity
Manhattan Distance L1
Euclidean Distance L2
Minkowski Distance L3
Chebyshev distance LInf
Canberra Distance nmdL1
Threshold Selection
Determined by field test
Dynamic Updated through Landmark Verification
Definition
Simple Average
Average with Extreme Elimination
PDF Fingerprint
