1. HOT SAX: efficiently finding the most unusual time series subsequence;Keogh,2005
2. Finding time series discords based on Harr transform;Fu,2006
3. WAT: finding top-K discords in time series database;Bu,2007
4. SAXually explicit images: finding unusual shapes;Li,2006
5. Disk aware discord discovery: finding unusual time series in terabyte sized datasets;Yankov,2007