272 search results - page 3 / 55 » Unsupervised Outlier Detection in Time Series Data |
ICDCS
2006
IEEE
13 years 10 months ago
2006
IEEE
To address the problem of unsupervised outlier detection in wireless sensor networks, we develop an algorithm that (1) is flexible with respect to the outlier definition, (2) wo...
DASFAA
2006
IEEE
13 years 10 months ago
2006
IEEE
Outlier analysis is an important task in data mining and has attracted much attention in both research and applications. Previous work on outlier detection involves different type...
CSDA
2007
13 years 4 months ago
2007
Robustified rank tests, applying a robust scale estimator, are investigated for reliable and fast shift detection in time series. The tests show good power for sufficiently larg...
JIDM
2010
13 years 3 months ago
2010
One of the most important challenges for the researchers in the 21st Century is related to global heating and climate change that can have as consequence the intensification of na...
CSDA
2007
13 years 4 months ago
2007
Abstract: Abrupt shifts in the level of a time series represent important information and should be preserved in statistical signal extraction. We investigate rules for detecting l...