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WWW
2011
ACM
13 years 4 months ago
Truthy: mapping the spread of astroturf in microblog streams
Online social media are complementing and in some cases replacing person-to-person social interaction and redefining the diffusion of information. In particular, microblogs have ...
Jacob Ratkiewicz, Michael Conover, Mark Meiss, Bru...
KDD
2007
ACM
211views Data Mining» more  KDD 2007»
14 years 9 months ago
Enhanced max margin learning on multimodal data mining in a multimedia database
The problem of multimodal data mining in a multimedia database can be addressed as a structured prediction problem where we learn the mapping from an input to the structured and i...
Zhen Guo, Zhongfei Zhang, Eric P. Xing, Christos F...
VLSID
2003
IEEE
183views VLSI» more  VLSID 2003»
14 years 9 months ago
Design of a 2D DCT/IDCT application specific VLIW processor supporting scaled and sub-sampled blocks
We present an innovative design of an accurate, 2D DCT IDCT processor, which handles scaled and sub-sampled input blocks efficiently. In the IDCT mode, the latency of the processo...
Rohini Krishnan, Om Prakash Gangwal, Jos T. J. van...
VLDB
2007
ACM
124views Database» more  VLDB 2007»
14 years 3 months ago
Ad-hoc Top-k Query Answering for Data Streams
A top-k query retrieves the k highest scoring tuples from a data set with respect to a scoring function defined on the attributes of a tuple. The efficient evaluation of top-k q...
Gautam Das, Dimitrios Gunopulos, Nick Koudas, Niko...
ICDM
2006
IEEE
91views Data Mining» more  ICDM 2006»
14 years 3 months ago
Entropy-based Concept Shift Detection
When monitoring sensory data (e.g., from a wearable device) the context oftentimes changes abruptly: people move from one situation (e.g., working quietly in their office) to ano...
Peter Vorburger, Abraham Bernstein