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IJNSEC
2010
138views more  IJNSEC 2010»
13 years 6 months ago
A Modified Hill Cipher Involving Interweaving and Iteration
This paper deals with a modification of the Hill cipher. In this, we have introduced interweaving in each step of the iteration. The interweaving of the resulting plaintext, at ea...
V. Umakanta Sastry, N. Ravi Shankar, S. Durga Bhav...
CDC
2010
IEEE
139views Control Systems» more  CDC 2010»
13 years 6 months ago
Q-learning and enhanced policy iteration in discounted dynamic programming
We consider the classical finite-state discounted Markovian decision problem, and we introduce a new policy iteration-like algorithm for finding the optimal state costs or Q-facto...
Dimitri P. Bertsekas, Huizhen Yu
COMPUTING
2010
13 years 8 months ago
Modified HSS iteration methods for a class of complex symmetric linear systems
In this paper, we introduce and analyze a modification of the Hermitian and skewHermitian splitting iteration method for solving a broad class of complex symmetric linear systems....
Zhong-Zhi Bai, Michele Benzi, Fang Chen
PIMRC
2010
IEEE
13 years 9 months ago
Low-complexity iteration control for MIMO-BICM systems
Air bandwidth is a precious resource for wireless communication. Multiple-antenna (MIMO) systems enable an increase in channel capacity without increasing the air bandwidth. An ite...
C. Gimmler, Timo Lehnigk-Emden, Norbert Wehn
LPAR
2010
Springer
13 years 9 months ago
ABC: Algebraic Bound Computation for Loops
Abstract. We present ABC, a software tool for automatically computing symbolic upper bounds on the number of iterations of nested program loops. The system combines static analysis...
Régis Blanc, Thomas A. Henzinger, Thibaud H...
JUCS
2002
81views more  JUCS 2002»
13 years 11 months ago
Rationally Additive Semirings
Abstract: We define rationally additive semirings that are a generalization of ()complete and (-)continuous semirings. We prove that every rationally additive semiring is an iterat...
Zoltán Ésik, Werner Kuich
AC
2004
Springer
13 years 11 months ago
The Timeboxing process model for iterative software development
In today's business where speed is of essence, an iterative development approach that allows the functionality to be delivered in parts has become a necessity and an effectiv...
Pankaj Jalote, Aveejeet Palit, Priya Kurien
SIAMJO
2008
117views more  SIAMJO 2008»
13 years 11 months ago
Two Algorithms for the Minimum Enclosing Ball Problem
Given A := {a1, . . . , am} Rn and > 0, we propose and analyze two algorithms for the problem of computing a (1 + )-approximation to the radius of the minimum enclosing ball o...
E. Alper Yildirim
MLQ
2008
106views more  MLQ 2008»
13 years 11 months ago
A general Mitchell style iteration
We work out the details of a schema for a mixed support forcing iteration, which generalizes the Mitchell model [7] with no Aronszajn trees on 2. The main purpose of this paper is ...
John Krueger
COMGEO
2006
ACM
13 years 11 months ago
A result about the density of iterated line intersections in the plane
Let S be a finite set of points in the plane and let T (S) be the set of intersection points between pairs of lines passing through any two points in S. We characterize all configu...
Christopher J. Hillar, Darren L. Rhea