1621 search results - page 120 / 325 » Detecting Experiences from Weblogs |
CIKM
2010
Springer
13 years 9 months ago
2010
Springer
The major challenge in mining data streams is the issue of concept drift, the tendency of the underlying data generation process to change over time. In this paper, we propose a g...
CVPR
2004
IEEE
15 years 20 days ago
2004
IEEE
We present an unsupervised technique for detecting unusual activity in a large video set using many simple features. No complex activity models and no supervised feature selection...
CVPR
2005
IEEE
15 years 20 days ago
2005
IEEE
We address the problem of temporal unusual event detection. Unusual events are characterized by a number of features (rarity, unexpectedness, and relevance) that limit the applica...
CVPR
2008
IEEE
15 years 20 days ago
2008
IEEE
Because of the large variation across different environments, a generic classifier trained on extensive data-sets may perform sub-optimally in a particular test environment. In th...
ICPR
2008
IEEE
14 years 12 months ago
2008
IEEE
Usually changes in remote sensing images go along with the appearance or disappearance of some edges. In addition, pixels located along the edges are likely to weakly influenced b...