146 search results - page 3 / 30 » Spectrum based fraud detection in social networks |
CISS
2008
IEEE
14 years 2 months ago
2008
IEEE
Abstract— Quickest detection is applied to frequency spectrum sensing in cognitive radio systems. Distribution change in frequency domain is detected for vacating secondary radio...
COCOON
2008
Springer
13 years 9 months ago
2008
Springer
In this paper, we study the spectrum assignment problem for wireless access networks. Opportunistic spectrum usage is a promising technology. However, it could suffer from the self...
ICDM
2006
IEEE
14 years 1 months ago
2006
IEEE
Mining graph data is an increasingly popular challenge, which has practical applications in many areas, including molecular substructure discovery, web link analysis, fraud detect...
ICDM
2005
IEEE
14 years 1 months ago
2005
IEEE
An outlier is an observation that deviates so much from other observations as to arouse suspicion that it was generated by a different mechanism. Outlier detection has many applic...
CORR
2008
Springer
13 years 7 months ago
2008
Springer
Abstract--We consider power control in cognitive radio networks where secondary users identify and exploit instantaneous and local spectrum opportunities without causing unacceptab...