Click Fraud Detection: HK-Index for Feature Extraction from Variable-Length Time Series of User Behavior.
Jiawei YangSylwan RahardjaSusanto RahardjaPublished in: MLSP (2022)
Keyphrases
- user behavior
- variable length
- fraud detection
- feature extraction
- fixed length
- outlier detection
- cost sensitive
- data mining techniques
- user clicks
- click models
- social network analysis
- user interaction
- intrusion detection
- user preferences
- n gram
- data mining
- online advertising
- feature vectors
- spam detection
- search sessions
- web usage mining
- user behavior patterns
- bitstream
- probabilistic model
- feature space
- face recognition
- human motion
- image quality
- wavelet transform
- user activity
- data streams
- feature selection