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NIPS
2007
13 years 11 months ago
On Ranking in Survival Analysis: Bounds on the Concordance Index
In this paper, we show that classical survival analysis involving censored data can naturally be cast as a ranking problem. The concordance index (CI), which quantifies the quali...
Vikas C. Raykar, Harald Steck, Balaji Krishnapuram...
CIKM
2009
Springer
13 years 11 months ago
Retrieval experiments using pseudo-desktop collections
Desktop search is an important part of personal information management (PIM). However, research in this area has been limited by the lack of shareable test collections, making cum...
Jinyoung Kim, W. Bruce Croft
IJCV
2008
139views more  IJCV 2008»
13 years 10 months ago
Multilevel Image Coding with Hyperfeatures
Histograms of local appearance descriptors are a popular representation for visual recognition. They are highly discriminant with good resistance to local occlusions and to geomet...
Ankur Agarwal, Bill Triggs
SIGMETRICS
2008
ACM
131views Hardware» more  SIGMETRICS 2008»
13 years 10 months ago
On the design of hybrid peer-to-peer systems
In this paper, we consider hybrid peer-to-peer systems where users form an unstructured peer-to-peer network with the purpose of assisting a server in the distribution of data. We...
Stratis Ioannidis, Peter Marbach
ICDM
2010
IEEE
167views Data Mining» more  ICDM 2010»
13 years 8 months ago
Averaged Stochastic Gradient Descent with Feedback: An Accurate, Robust, and Fast Training Method
On large datasets, the popular training approach has been stochastic gradient descent (SGD). This paper proposes a modification of SGD, called averaged SGD with feedback (ASF), tha...
Xu Sun, Hisashi Kashima, Takuya Matsuzaki, Naonori...