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TOMS
2008
80views more  TOMS 2008»
15 years 6 months ago
Updating an LU Factorization with Pivoting
We show how to compute an LU factorization of a matrix when the factors of a leading principle submatrix are already known. The approach incorporates pivoting akin to partial pivo...
Enrique S. Quintana-Ortí, Robert A. van de ...
SIAMJO
2008
81views more  SIAMJO 2008»
15 years 5 months ago
A First-Order Convergence Analysis of Trust-Region Methods with Inexact Jacobians
A class of trust-region algorithms is developed and analyzed for the solution of minimization problems with nonlinear inequality constraints. Based on composite-step trust region ...
Andrea Walther
DATESO
2010
369views Database» more  DATESO 2010»
15 years 4 months ago
Database Trends and Directions: Current Challenges and Opportunities
Database management has undergone more than four decades of evolution producing vast range of research and extensive array of technology solutions. The database research community ...
George Feuerlicht
IMCSIT
2010
15 years 4 months ago
Building and Using Existing Hunspell Dictionaries and TeX Hyphenators as Finite-State Automata
Abstract--There are numerous formats for writing spellcheckers for open-source systems and there are many descriptions for languages written in these formats. Similarly, for word h...
Tommi Pirinen, Krister Lindén
ICC
2009
IEEE
121views Communications» more  ICC 2009»
15 years 4 months ago
Channel Estimation and Tracking Schemes for the Pulse-Shaping OFDM Systems
Robust channel estimation scheme is essential for pulse-shaping OFDM systems in the multipath mobile environment. This paper proposes three types of channel estimation schemes for ...
Bayarpurev Mongol, Takaya Yamazato, Masaaki Kataya...