Unsupervised Financial Fraud Detection Using Low-rank Recovery.
Jingjing ZhengJohn HawkinCharles RobertsonAlexander J. M. HowseYuanzhu ChenXianta JiangPublished in: Canadian AI (2023)
Keyphrases
- fraud detection
- low rank
- semi supervised
- convex optimization
- missing data
- outlier detection
- data mining techniques
- linear combination
- singular value decomposition
- matrix factorization
- cost sensitive
- social network analysis
- low rank matrix
- rank minimization
- matrix completion
- unsupervised learning
- credit card
- supervised learning
- high dimensional data
- trace norm
- high order
- data mining
- financial institutions
- semi supervised learning
- online auctions
- labeled data
- intrusion detection
- unlabeled data
- social networks
- text classification
- small number
- active learning
- recommender systems