New preconditioners for KKT systems of network flow problems (2008)
Abstract. We propose a new set of preconditioners for the iterative solution, via a preconditioned conjugate gradient (PCG) method, of the KKT systems that must be solved at each iteration of an...
Consiglio Nazionale, Delle Ricerche, A. Frangioni, C. Gentile
Support-graph preconditioners have been shown to be a valuable tool for the iterative solution, via a Preconditioned Conjugate Gradient method, of the KKT systems that must be solved at each...
SOLVING UNIT COMMITMENT PROBLEMS WITH GENERAL RAMP CONTRAINTS (2008)
Consiglio Nazionale, Delle Ricerche, A. Frangioni, C. Gentile, F. Lacal, R. Gennaio
Lagrangian Relaxation (LR) algorithms are among the most successful approaches for solving large-scale hydro-thermal Unit Commitment (UC) problems; this is largely due to the fact that the...
TIGHTER APPROXIMATED MILP FORMULATIONS FOR UNIT COMMITMENT PROBLEMS (2008)
A. Frangioni, C. Gentile, F. Lacal, R. Aprile
The short-term Unit Commitment (UC) problem in hydro-thermal power generation is a largescale, Mixed-Integer NonLinear Program (MINLP), which is difficult to solve efficiently, especially for...
EXPERIMENTS WITH A HYBRID INTERIOR POINT/COMBINATORIAL APPROACH FOR NETWORK FLOW PROBLEMS (2008)
Consiglio Nazionale, Delle Ricerche, A. Frangioni, C. Gentile, R. Aprile
Interior Point (IP) algorithms for Min Cost Flow (MCF) problems have been shown to be competitive with combinatorial approaches, at least on some problem classes and for very large instances. This is...
On the Way to Perfection: Primal Operations for Stable Sets in Graphs (2008)
C. Gentile, G. Rinaldi, R. Weismantel
Manfred Padberg is the scientific father, or the scientific grandfather, or the scientific great grandfather of each of the five authors. This paper is dedicated to him on the occasion of his 60th...
P-sufficient statistics for PAC learning k-term-DNF formulas through enumeration. (2007)
Working in the framework of PAC-learning theory, we present special statistics for accomplishing in polynomial time proper learning of DNF boolean formulas having a fixed number of monomials. Our...
INTERIOR POINT METHODS FOR NETWORK PROBLEMS (2007)
Consiglio Nazionale, Delle Ricerche, A. Frangioni, C. Gentile
email: iasiiasi.rm. cnr. URL: h;;p://www. iasi. rm. cnr. We propose a new set of preconditioners for the iterative (approximate) solution, via a Precondirioned Conjugate Gradient (PCG) method, of the...
C Gentile, JBP Lima, AA Peixoto
The constitutive ribosomal gene rp49 is frequently used as an endogenous control in Drosophila gene expression experiments. Using the degenerate primer PCR technique we have cloned a fragment...
Gentile,C, Lima,JBP, Peixoto,AA
The constitutive ribosomal gene rp49 is frequently used as an endogenous control in Drosophila gene expression experiments. Using the degenerate primer PCR technique we have cloned a fragment...
Overview of JET results (2003)
Pamela, J., Solano, E. R., Adams, J. M., Agarici, G., Agarici, M., Akhter, H., ...
Scientific and technical activities on JET focus on the issues likely to affect the ITER design and operation. Our understanding of the ITER reference mode of operation, the ELMy H-mode, has...
The Linear Min Cost Flow (MCF) problem is the following Linear Program (2003)
We propose a new set of preconditioners for the iterative solution, via a Preconditioned Conjugate Gradient (PCG) method, of the KKT systems that must be solved at each iteration of an Interior Point...
Preliminary report on nitric oxide-mediated oxidative damage in adolescent varicocele (2003)
Romeo, C., Ientile, R., Impellizzeri, P., Turiaco, N., Teletta, M., Antonuccio, P., ...
BACKGROUND: The current study was designed to characterize the process of nitric oxide (NO) and peroxynitrite generation through the determination of nitrotyrosine concentration in the dilated veins...
Sample Size Lower Bounds in PAC Learning by Algorithmic Complexity Theory (1998)
This paper focuses on a general setup for obtaining sample size lower bounds for learning concept classes under fixed distribution laws in an extended PAC learning framework. These bounds do not...
SART: A system for supporting operators with contextual knowledge (1997)
P. Brézillon, C. Gentile, I. Saker, M. Secron
The regulation of the subway line traffic is a domain where human controllers must deal with a huge quantity of knowledge pieces more or less implicit in the regulation itself. When an incident...
G. Gallo, C. Gentile, D. Pretolani
March 1996 1 Introduction The Maximum Satisfiability Problem for Horn clauses (Max Horn SAT) can be formulated as the problem of finding a minimum cardinality cut in a directed hypergraph. We exploit...
Rothman, N., Poirier, M.C., Baser, M.E., Hansen, J.A., Gentile, C., Bowman, E.D., ...
The effect of ingesting charcoal-broiled (CB) beef on polycydic aromatic hydrocarbon (PAH)-DNA adduct levels in nucleated peripheral white blood cells (WBCs) was examined in four healthy, non-smoking...
Yuryev, A, Patturajan, M, Litingtung, Y, Joshi, R V, Gentile, C, Gebara, M, ...
Although transcription and pre-mRNA processing are colocalized in eukaryotic nuclei, molecules linking these processes have not previously been described. We have identified four novel rat proteins...