47 search results - page 5 / 10 » A Bound on the Performance of LDA in Randomly Projected Data... |
CORR
2010
Springer
13 years 7 months ago
2010
Springer
In this paper we show how the complexity of performing nearest neighbor (NNS) search on a metric space is related to the expansion of the metric space. Given a metric space we loo...
SDM
2011
SIAM
12 years 10 months ago
2011
SIAM
Latent semantic analysis (LSA), as one of the most popular unsupervised dimension reduction tools, has a wide range of applications in text mining and information retrieval. The k...
CVPR
2010
IEEE
13 years 9 months ago
2010
IEEE
Image similarity search is a fundamental problem in computer vision. Efficient similarity search across large image databases depends critically on the availability of compact ima...
EMMCVPR
1999
Springer
13 years 12 months ago
1999
Springer
Abstract. We propose a vector representation approach to contour estimation from noisy data. Images are modeled as random elds composed of a set of homogeneous regions contours (bo...
ICDT
2009
ACM
14 years 8 months ago
2009
ACM
We continue the study of approximating the number of distinct elements in a data stream of length n to within a (1? ) factor. It is known that if the stream may consist of arbitra...