Research Output 1964 2019

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Working paper
2018
10 Downloads (Pure)

Minimizing convex quadratics with variable precision Krylov methods

Gratton, S., Simon, E. & Toint, P., 2018, (Submitted) Arxiv, 26 p.

Research output: Working paper

File
Krylov Methods
Quadratic Optimization
Cross product
Matrix Product
Conjugate Gradient
2017
2 Downloads (Pure)

On the use of the saddle formulation in weakly-constrained 4D-VAR data assimilation

Gratton, S., Gürol, S., Simon, E. & Toint, P., 20 Sep 2017, (Submitted) Arxiv.

Research output: Working paper

File
Data Assimilation
Saddle
Parallel processing systems
data assimilation
parallel computing
17 Downloads (Pure)

Worst-case evaluation complexity and optimality of second-order methods for nonconvex smooth optimization

Cartis, C., Gould, N. I. M. & Toint, P., 22 Sep 2017, Arxiv, 35 p.

Research output: Working paper

File
Newton-Raphson method
Optimality
Optimization
Function evaluation
Evaluation
2016
9 Downloads (Pure)

Quantifying the degree of average contraction of Collatz orbits

Carletti, T. & Fanelli, D., 21 Dec 2016, (Submitted) Namur center for complex systems, 18 p.

Research output: Working paper

File
Contraction
Orbit
Modulo
Integer
Iterate
2015
24 Downloads (Pure)

Improved worst-case evaluation complexity for potentially rank-deficient nonlinear least-Euclidean-norm problems using higher-order regularized models

Cartis, C., Gould, N. I. M. & Toint, P., 18 Nov 2015, 18 p. (naXys technical report).

Research output: Working paper

File
Euclidean norm
Local Minimizer
Vector-valued Functions
Taylor series
Criticality
9 Downloads (Pure)

Worst-case evaluation complexity for unconstrained nonlinear optimization using high-order regularized models

Birgin, E., Gardenghi, J., Martinez, J-M., Santos, S. A. & Toint, P., Jun 2015, 2015: Namur center for complex systems, 8 p. (naXys Technical Reports; vol. 05-2015).

Research output: Working paper

File
Unconstrained Optimization
Nonlinear Optimization
Higher Order
Derivatives
Derivative
2014
116 Downloads (Pure)
File
Interior Point
Nonlinear Optimization
Matrix Derivative
Merit Function
Quadratic Optimization
2013
12 Downloads (Pure)

Adaptive Observations And Multilevel Optimization In Data Assimilation

Gratton, S., Rincon-Camacho, M. & Toint, P., 2013, Namur: Namur center for complex systems, 18 p.

Research output: Working paper

File
data assimilation
decomposition
wave equation
weather
prediction
63 Downloads (Pure)
File
Unconstrained Minimization
Steepest Descent Method
Evaluation Function
Terminate
Iterate
2012
2010

Carte hydrogéologique DUISBOURG - HAMME-MILLE

Capette, L. & Hallet, V., 2010, (Unpublished).

Research output: Working paper

Carte hydrogéologique JODOIGNE - JAUCHE

Capette, L. & Hallet, V., 2010, (Unpublished).

Research output: Working paper

Carte hydrogéologique MELDERT - TIENEN

Capette, L. & Hallet, V., 2010.

Research output: Working paper

78 Downloads (Pure)

Stochastic Weighted Fractal Networks

Carletti, T., 2010.

Research output: Working paper

File
Fractal
Fractal Set
Weighted Networks
Complex Networks
Sharing
2009
18 Downloads (Pure)
File

Carte hydrogéologique PERWEZ - EGHEZEE

Capette, L. & Hallet, V., 2009.

Research output: Working paper

Naissance du concept écononomique d'élasticité

Bair, J. & Henry, V., 2009, Université de Liège - ULg > HEC-Ecole de gestion de l'ULg : UER > Mathématiques appliquées aux sc. économiques et de gestion >: CERIMES.

Research output: Working paper

Resonances : models and captures.

Lemaître, A., 2009, (Unpublished) Lecture Notes in Physics.

Research output: Working paper

2008
205 Downloads (Pure)
File
internal migration
Landsat
land use
local economy
land use change

Aphid and Plant Volatiles Induce Oviposition in an Aphidophagous Hoverfly

Verheggen, F., Arnaud, L., Bartam, S., Gohy, M. & Haubruge, E., 2008.

Research output: Working paper

Carte hydrogéologique GESVES - OHEY

Sorel, A. & Hallet, V., 2008.

Research output: Working paper

Characterization of silicon nitride thin films deposited by plasma magnetron

Batan, A., Franquet, A., Vereecken, J. & Reniers, F., 2008, (Unpublished).

Research output: Working paper