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ICIP
2005
IEEE
14 years 3 months ago
Minmax strategies for QIM watermarking subject to attacks with memory
This paper examines the role of attacker’s memory in Quantization Index Modulation (QIM) watermarking systems. First we derive the attacker’s noise distribution that maximizes...
Pierre Moulin, Anil Kumar Goteti
ICMCS
2005
IEEE
71views Multimedia» more  ICMCS 2005»
14 years 3 months ago
A proposal of butterfly-graph based stream authentication over lossy networks
In this paper, we propose a butterfly-graph based stream authentication scheme for lossy networks where the streaming packets could be lost in both random and burst ways. Due to t...
Zhishou Zhang, Qibin Sun, Wai-Choong Wong
AIRWEB
2005
Springer
14 years 3 months ago
Pagerank Increase under Different Collusion Topologies
We study the impact of collusion –nepotistic linking– in a Web graph in terms of Pagerank. We prove a bound on the Pagerank increase that depends both on the reset probability...
Ricardo A. Baeza-Yates, Carlos Castillo, Vicente L...
WEBI
2001
Springer
14 years 2 months ago
Average-Clicks: A New Measure of Distance on the World Wide Web
The pages and hyperlinks of the World Wide Web may be viewed as nodes and edges in a directed graph. In this paper, we propose a new definition of the distance between two pages, ...
Yutaka Matsuo, Yukio Ohsawa, Mitsuru Ishizuka
CAIP
1999
Springer
139views Image Analysis» more  CAIP 1999»
14 years 2 months ago
Image Retrieval System Based on Machine Learning and Using Color Features
We describe an interactive system for content based image retrieval. The system presents the user with 15 randomly selected images from the database. The user grades the images wit...
Janez Demsar, Dragan Radolovic, Franc Solina