Weighted Outlier Detection of High-Dimensional Categorical Data Using Feature Grouping.
Junli LiJifu ZhangNing PangXiao QinPublished in: IEEE Trans. Syst. Man Cybern. Syst. (2020)
Keyphrases
- outlier detection
- categorical data
- distance based outlier detection
- parameter free
- high dimensional
- high dimensional datasets
- cluster analysis
- density based clustering
- numerical data
- detecting outliers
- knowledge discovery
- fraud detection
- detection algorithm
- attribute values
- density ratio estimation
- credit card fraud detection
- density estimation
- low dimensional
- dimensionality reduction
- detect outliers
- databases
- data mining
- data streams
- data sets
- categorical attributes
- probabilistic model
- high dimensional data
- similarity search
- feature space
- least squares
- principal component analysis
- information retrieval
- spatial outliers