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MM
2005
ACM
114views Multimedia» more  MM 2005»
15 years 8 months ago
IMAGINATION: a robust image-based CAPTCHA generation system
We propose IMAGINATION (IMAge Generation for INternet AuthenticaTION), a system for the generation of attack-resistant, user-friendly, image-based CAPTCHAs. In our system, we prod...
Ritendra Datta, Jia Li, James Ze Wang
WOWMOM
2005
ACM
115views Multimedia» more  WOWMOM 2005»
15 years 8 months ago
Precise Distributed Localization Algorithms for Wireless Networks
We propose in this paper reliable and precise distributed localization algorithms for wireless networks: iterative multidimensional scaling (IT-MDS) and simulated annealing multid...
Saad Biaz, Yiming Ji
APPROX
2005
Springer
84views Algorithms» more  APPROX 2005»
15 years 7 months ago
The Tensor Product of Two Codes Is Not Necessarily Robustly Testable
There has been significant interest lately in the task of constructing codes that are testable with a small number of random probes. Ben-Sasson and Sudan show that the repeated te...
Paul Valiant
PPAM
2005
Springer
15 years 7 months ago
Parallel Query Processing and Edge Ranking of Graphs
Abstract. In this paper we deal with the problem of finding an optimal query execution plan in database systems. We improve the analysis of a polynomial-time approximation algorit...
Dariusz Dereniowski, Marek Kubale
RSFDGRC
2005
Springer
100views Data Mining» more  RSFDGRC 2005»
15 years 7 months ago
A Hybrid Approach to MR Imaging Segmentation Using Unsupervised Clustering and Approximate Reducts
Abstract. We introduce a hybrid approach to magnetic resonance image segmentation using unsupervised clustering and the rules derived from approximate decision reducts. We utilize ...
Sebastian Widz, Kenneth Revett, Dominik Slezak