Sciweavers

421 search results - page 27 / 85
» Random Indexing using Statistical Weight Functions
Sort
View
CTRSA
2009
Springer
128views Cryptology» more  CTRSA 2009»
14 years 3 months ago
Short Redactable Signatures Using Random Trees
Abstract. A redactable signature scheme for a string of objects supports verification even if multiple substrings are removed from the original string. It is important that the re...
Ee-Chien Chang, Chee Liang Lim, Jia Xu
IJCV
2000
110views more  IJCV 2000»
13 years 8 months ago
A Parametric Texture Model Based on Joint Statistics of Complex Wavelet Coefficients
We present a universal statistical model for texture images in the context of an overcomplete complex wavelet transform. The model is parameterized by a set of statistics computed ...
Javier Portilla, Eero P. Simoncelli
TIT
2010
143views Education» more  TIT 2010»
13 years 3 months ago
Asynchronous CDMA systems with random spreading-part I: fundamental limits
Spectral efficiency for asynchronous code division multiple access (CDMA) with random spreading is calculated in the large system limit. We allow for arbitrary chip waveforms and ...
Laura Cottatellucci, Ralf R. Müller, Mé...
SIGIR
2010
ACM
14 years 10 days ago
On statistical analysis and optimization of information retrieval effectiveness metrics
This paper presents a new way of thinking for IR metric optimization. It is argued that the optimal ranking problem should be factorized into two distinct yet interrelated stages:...
Jun Wang, Jianhan Zhu
CIVR
2007
Springer
180views Image Analysis» more  CIVR 2007»
14 years 2 months ago
Probabilistic matching and resemblance evaluation of shapes in trademark images
We present a novel matching and similarity evaluation method for planar geometric shapes represented by sets of polygonal curves. Given two shapes, the matching algorithm randomly...
Helmut Alt, Ludmila Scharf, Sven Scholz