D. Di Lorenzo , G. Liuzzi, F. Rinaldi, F. Schoen and M. Sciandrone Dipartimento di Sistemi e Informatica, Università di Firenze, Via di S. Marta 3, 50139 Firenze Italy; Istituto di Analisi dei Sistemi e Informatica, Consiglio Nazionale delle Ricerche, Viale Manzoni 30, 00185 Roma Italy; Dipartimento di Informatica e Sistemistica, Sapienza Università di Roma, via Ariosto, 25, 00185 Roma Italy;

2000 Mathematics Subject Classification. 31C25, 47B35, 30C85. N.A.’s work partially supported by the COFIN project Analisi Armonica, funded by the Italian Minister for Research. R.R.’s work supported by the National Science Foundation under Grant No. 0070642. E.S.’s work supported by the National Science and Engineering Council of Canada. B.D.W.’s work supported by the National Science Foundati...

We present the main results obtained during a research on ABS methods in the framework of the project Analisi Numerica e Matematica Computazionale. 1. – The ABS algorithms. ABS algorithms were introduced by Abaffy, Broyden and Spedicato (1984), to solve linear equations first in the form of the basic ABS class, later generalized as the scaled ABS class and applied to linear least squares, nonli...

Localized discriminant analysis methods are introduced for image classification in order to take account of spatial correlation present in data arising in several applications. Comparisons are made with the ICM method. Numerical experiments on synthetic datasets are worked out. The methods are applied to the retrieval of the cloud mask from satellite remote sensed images. Riassunto: Vengono int...