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ICDM
2010
IEEE
164views Data Mining» more  ICDM 2010»
13 years 5 months ago
Improved Consistent Sampling, Weighted Minhash and L1 Sketching
Abstract--We propose a new Consistent Weighted Sampling method, where the probability of drawing identical samples for a pair of inputs is equal to their Jaccard similarity. Our me...
Sergey Ioffe
ICPR
2010
IEEE
13 years 11 months ago
Beyond "Near-Duplicates": Learning Hash Codes for Efficient Similar-Image Retrieval
Finding similar images in a large database is an important, but often computationally expensive, task. In this paper, we present a two-tier similar-image retrieval system with the...
Shumeet Baluja, Michele Covell
WSC
2004
13 years 9 months ago
Efficient Pricing of Barrier Options with the Variance-Gamma Model
We develop an efficient Monte Carlo algorithm for pricing barrier options with the variance gamma model (Madan, Carr, and Chang 1998). After generalizing the double-gamma bridge s...
Athanassios N. Avramidis
SIGMOD
2008
ACM
138views Database» more  SIGMOD 2008»
14 years 8 months ago
Sampling time-based sliding windows in bounded space
Random sampling is an appealing approach to build synopses of large data streams because random samples can be used for a broad spectrum of analytical tasks. Users are often inter...
Rainer Gemulla, Wolfgang Lehner
CORR
2010
Springer
171views Education» more  CORR 2010»
13 years 8 months ago
Randomized Lattice Decoding
Sphere decoding achieves maximum-likelihood (ML) performance at the cost of exponential complexity; lattice reduction-aided successive interference cancelation (SIC) significantly...
Shuiyin Liu, Cong Ling, Damien Stehlé