An algorithm for computing minimum norm solutions of finite moment problem.
Algorithms for Approximation II, RMCS Shrivenham, U.K., July 12–15, 1988.
Sulla risoluzione numerica del problema dei momenti finiti mediante polinomi di Chebyshev.
Convegno Nazionale di Analisi Numerica, Roma, 26–28 Settembre, 1988.
On the numerical inversion of the Laplace transform with equally spaced data.
Trends in Functional Analysis and Approximation Theory, Acquafredda di Maratea (Pz), 11–15 Settembre, 1989.
An application of orthogonal polynomials to the finite moment problem.
Third International Symposium of Numerical Analysis, Madrid, Spain, May 22–24, 1990.
Numerical solution of the finite moment problem with boundary constraints.
International Conference on Computational and Applied Mathematics, Cagliari, October 15–19, 1990.
On the numerical inversion of the Laplace transform in reproducing kernel Hilbert spaces.
14th Biennial Conference on Numerical Analysis, Dundee, Scotland, June 24–29, 1991.
On the numerical inversion of the Laplace transform with boundary constraints.
Ill-Posed Problems in Natural Sciences, Moscow, Russia, August 19–25, 1991.
Orthogonal splines based on B-splines—with applications to least squares, smoothing and regularization problems.
NATO Advanced Research Workshop Algorithms for Approximation 1992, Oxford, U.K., July 27–31, 1992.
Approximation methods for the finite moment problem.
NATO Advanced Research Workshop Algorithms for Approximation 1992, Oxford, U.K., July 27–31, 1992.
Approssimazione mediante splines ortogonali.
Convegno Nazionale di Analisi Numerica, Montecatini Terme, 27–29 Aprile, 1994.
Efficient processes of orthonormalization of locally supported functions.
Third International Colloquium on Numerical Analysis, Plovdiv, Bulgaria, August 13–17, 1994.
Classical solutions for wave equations modelling propagation of seismic waves.
Third International Colloquium on Numerical Analysis, Plovdiv, Bulgaria, August 13–17, 1994.
Classical solutions for 1D wave equations with discontinuous velocity and singular source term.
Applications of Mathematics in Engineering, Varna, Bulgaria, August 26–September 2, 1994.
Fattorizzazione di matrici infinite di Toeplitz e ortogonalizzazione di successioni di funzioni.
XV Congresso U.M.I., Padova, 11–16 Settembre, 1995.
Fattorizzazione spettrale e generazione di funzioni ortogonali.
XV Congresso U.M.I., Padova, 11–16 Settembre, 1995.
On the asymptotic behaviour of the Gram Schmidt orthonormalization of the integer translates os a fixed function.
International Workshop on Multivariate Approximation and Interpolation. Montecatini Terme, 27 Settembre–3 Ottobre, 1995.
Spectral factorization of Laurent polynomials.
Incontro scientifico INDAM su “Toeplitz Matrices: structure, algorithms and applications”, Cortona, 8–14 Settembre, 1996.
factorization of block-tridiagonal Toeplitz matrices with
application to orthonormalization processes.
International Conference on Functional Analysis and
Approximation Theory, Acquafredda di Maratea (Pz), 23–28 Settembre, 1996.
Extrapolation techniques for ill-conditioned linear systems.
17th Biennial Conference on Numerical Analysis, Dundee, Scotland, June 24–27, 1997.
Block Cholesky factorization of infinite matrices, and orthonormalization of vectors of functions.
Guangzhou International Symposium on Computational Mathematics, Zhongshan University, Guangzhou, People's Republic of China, August 11–15, 1997.
Solution methods for perturbed semi-infinite linear systems of block-Toeplitz type.
2nd Workshop on Large-Scale Scientific Computations, Sozopol, Bulgaria, June 2–6, 1999.
Image segmentation by texture analysis.
International Conference on Image Analysis and Processing, Venice, Italy, September 27–29, 1999.
Fattorizzazione spettrale di matrici di Toeplitz bi-infinite con applicazioni I.
Due giorni di Algebra Lineare Numerica, Pisa, Italy, May 29–30, 2000.
Fattorizzazione spettrale di matrici di Toeplitz bi-infinite con applicazioni II.
Due giorni di Algebra Lineare Numerica, Pisa, Italy, May 29–30, 2000.
Tecniche di estrapolazione per la risoluzione di sistemi lineari malcondizionati.
Due giorni di Algebra Lineare Numerica, Pisa, Italy, May 29–30, 2000.
Solving the Helmholtz equation on a semi-infinite strip.
V Congresso Simai - Società Italiana di Matematica Applicata e Industriale, Ischia, Italy, June 5–9, 2000.
Spectral factorization of bi-infinite multi-index block Toeplitz matrices and applications.
Structured matrices: analysis, algorithms and applications, Cortona, Italy, September 25–29, 2000.
Multi-parameter regularization techniques for ill-conditioned linear systems.
Conference on Applied Inverse Problems: Theoretical and Computational Aspects, Montecatini Terme, Italy, June 18–22, 2001.
Multi-parameter regularization techniques for ill-conditioned linear systems.
International Conference on Numerical Algorithms, Marrakesh, Morocco, October 1–5, 2001.
A new extrapolation technique for ill-conditioned linear systems.
International Conference on Numerical Algorithms, Marrakesh, Morocco, October 1–5, 2001.
Recenti sviluppi nella risoluzione dei sistemi lineari malcondizionati.
Due giornate di lavoro su Algebra Lineare Numerica e Applicazioni, Pisa, Italy, January 31–February 1, 2002.
Sulla risoluzione dei sistemi lineari semi-infiniti con matrici di Toeplitz multi-indice.
Due giornate di lavoro su Algebra Lineare Numerica e Applicazioni, Pisa, Italy, January 31–February 1, 2002.
Relazione sul progetto “Trattamento numerico di equazioni integrali e di problemi connessi di algebra lineare”.
GNCS 2002 - Incontro annuale del Gruppo Nazionale per il Calcolo Scientifico - INdAM, Ferrara, Italy, February 12–13, 2002.
Least squares solution of large Toeplitz linear systems.
VI Congresso SIMAI - Società Italiana di Matematica Applicata e Industriale, Chia Laguna (Cagliari), Italy, May 27–31, 2002.
Un algoritmo veloce per la risoluzione nel senso dei minimi quadrati di sistemi lineari di Toeplitz sovradeterminati.
Equazioni integrali e problemi connessi di algebra lineare, Cagliari, Italy, September 10–11, 2002.
Recognition of shapes by morphological attributed relational graphs.
VIII Convegno AIIA - Associazione Italiana Intelligenza Artificiale, Workshop sulla percezione e visione nelle macchine, Siena, Italy, September 10–13, 2002.
Un algoritmo per la stima del parametro di regolarizzazione ottimale mediante la curva L.
Convegno Nazionale “Analisi Numerica: stato dell'arte”, Arcavacata di Rende (CS), Italy, September 26–28, 2002.
Metodologie per il trattamento di sistemi lineari strutturati malcondizionati.
Due giorni di Algebra Lineare Numerica 2003, Pisa, Italy, March 6–7, 2003.
Fast least squares and Tikhonov regularization for linear systems with displacement structure.
IWOTA 2003 - International Workshop on Operator Theory and Applications, Cagliari, Italy, June 24–27, 2003.
An algorithm for solving Toeplitz systems by embedding in infinite systems.
IWOTA 2003 - International Workshop on Operator Theory and Applications, Cagliari, Italy, June 24–27, 2003.
Precondizionamento circolante delle matrici di Toeplitz multiindice.
Due Giorni di Algebra Lineare Numerica e Applicazioni, Udine, Italy, January 22–23, 2004.
Risoluzione di un sistema lineare di Toeplitz mediante immersione in un sistema infinito.
Convegno GNCS - Gruppo Nazionale per il Calcolo Scientifico, Montecatini, Italy, February 9–11, 2004.
Computing multilevel circulant preconditioners.
ICCAM 2004, International Congress on Computational and Applied Mathematics, Katholieke Universiteit Leuven, Belgium, July 26-30, 2004.
Circulant preconditioning of multiindex Toeplitz systems.
Structured Numerical Linear Algebra Problems: Algorithms and Applications, Cortona, Italy, September 19–24, 2004.
Implementazione di una libreria Matlab per il calcolo con matrici strutturate.
Matrici di Toeplitz a villa Toeplitz (2 Giorni di Algebra Lineare Numerica), Varese, Italy, February 14–15, 2005.
Regularization of blurred images by tensor decomposition.
International Conference on Matrix Methods and Operator Equations, Moscow, Russia, June 20–25, 2005.
Un algoritmo rank-revealing per la risoluzione nel senso dei minimi quadrati di sistemi lineari a rango non pieno.
Giornate di Algebra Lineare Numerica ed Applicazioni, Padova, Italy, February 26–27, 2007.
Algorithms and software for the solution and the regularization of large structured linear systems.
International workshop on Numerical Linear Algebra, Internet and Large Scale Applications, Monopoli (Bari), Italy, September 9–14. Invited talk, 2007.
Valutazione del parametro di regolarizzazione nella risoluzione dei sistemi lineari malcondizionati.
Equazioni Integrali: recenti sviluppi numerici e nuove applicazioni, Parma, Italy, September 27–28, 2007.
Using error estimates to predict the correct degree of smoothing.
Matrix Analysis and Applications, CIRM Luminy, France, October 15–19. Invited talk, 2007.
On the regularization of large scale ill-conditioned linear systems.
Foundations of Computational Mathematics, Workshop on Numerical Linear Algebra, Hong Kong, June 16–26. Invited talk, 2008.
Choosing the Tikhonov regularization parameter in large scale problems.
Structured Numerical Linear Algebra Problems: Algorithms and Applications, Cortona, September 15–19, 2008.
An algorithm for the least-squares solution of rank-deficient linear systems.
Applied Inverse Problems 2009, Minisimposium on Computational Aspects and Emerging Applications, Vienna, July 20–24. Invited talk, 2009.
Matrix computations in the numerical solution of the nonlinear Schrödinger equation.
2nd Dolomites Workshop on Constructive Approximation and Applications, Section on Approximation Methods in Numerical Linear Algebra, Alba di Canazei, September 4–9. Invited talk, 2009.
Numerical effectiveness of the Regińska criterion in TSVD and iterative methods.
IPCA10 - Inverse Problems: Computation and Applications, CIRM Luminy, France, May 31–June 4. Invited talk, 2010.
Designing a library for structured linear algebra computation: solution of linear systems.
16th Conference of the ILAS, Minisymposium on Structured Matrices, Pisa, June 21–25. Invited talk, 2010.
A new criterion for choosing the regularization parameter in TSVD and iterative methods.
SIMAI 2010, Minisymposium on Analytical and Numerical Methods for Applied Inverse Problems, Cagliari, June 21–25, 2010.
Inversion of electromagnetic data.
Foundations of Computational Mathematics, Workshop on Numerical Linear Algebra, Budapest, Hungary, July 4–14. Invited talk, 2011.
Confronto di vecchie e nuove tecniche per la determinazione di un parametro di regolarizzazione discreto.
Due Giorni di Algebra Lineare Numerica, Genova, February 16–17, 2012.
Fast ranking of nodes on a network with respect to
-subgraph
centrality.
Structured Numerical Linear and Multilinear Algebra. Problems Analysis, Algorithms, and Applications, KU Leuven, Belgium, September 10–14. Invited talk, 2012.
Valutazione di funzioni matriciali con applicazioni alle reti complesse.
Due giornate di Matematica Applicata, Cagliari, October 16–17, 2012.
Fast computation of centrality indices in complex networks.
New Frontiers in Numerical Analysis and Scientific Computing, Kent, Ohio, U.S.A., April 19–20, 2013.
Regularized solution of linear and nonlinear problems in electromagnetic sounding.
2013 SIAM Conference on Mathematical and Computational Issues in the Geosciences, Minisymposium on Recent Regularization Methods for Subsurface Prospection and Remote Sensing (MS86), Padova, June 17–20. Invited talk, 2013.
Fast ranking of nodes on digraphs.
Nonlinear Evolution Equations and Linear Algebra (VDM60), Cagliari, September 2–5, 2013.
Photometric stereo for 3D mapping of carvings and relieves: case studies on prehistorical art in Sardinia.
XVII Seminário Internacional de Arte Rupestre de Mação, Mação, Portugal, April 9–10, 2014.
Recent improvements in photometric stereo for rock art 3D imaging.
Documenting Prehistoric Parietal Art: Recently Developed Digital Recording Techniques, Cambridge, U. K., May 21–22, 2014.
Low-rank approximation methods for ranking the nodes of a complex network.
2014 SIAM Annual Meeting, MS30 Innovative Linear Algebra Techniques for Complex Networks, The Palmer House, Chicago, USA, July 7–11. Invited talk, 2014.
On a nonlinear inverse problem in electromagnetic sounding.
Structured Numerical Linear and Multilinear Algebra: Analysis, Algorithms and Applications, Kalamata, Greece, September 8–12. Invited talk, 2014.
The COSE method for the regularization of linear discrete ill-posed problems.
Two Days on Applied Mathematics in Cagliari, Italy, April 9–10, 2015.
Approximating the trace of a matrix function via partial global block lanczos decomposition.
XX Congresso U.M.I., Sezione S12: Algebra lineare numerica e ottimizzazione, Siena, Italy, September 7–12. Invited talk, 2015.
Shape reconstruction by photometric stereo with unknown lighting.
SIAM Conference on Applied Linear Algebra 2015, MS14 Recent Advances in Numerical Linear Algebra for Image Processing, Hyatt Regency, Atlanta, USA, October 26–30. Invited talk. Available online, 2015.
A survey of inverse problems relevant in applied geophysics.
Opening Meeting for the Research Project GNCS 2016 “PING - Inverse Problems in Geophysics”, Florence, Italy, April 6, 2016.
Efficient computation of complex networks metrics by block Gauss quadrature rules.
ILAS Conference 2016, Minisymposium on Matrix
Methods in Network Analysis, KU Leuven, Belgium, July 11–15, 2016. Invited
talk, 2016.
3D restoration of prehistoric petroglyphs by photometric stereo.
SIMAI 2016, Minisymposium MS-31: New Mathematical Trends in Imaging, Milano, September 13–16. Invited talk, 2016.
Large scale computation of the trace of a matrix function.
International Workshop on Applied Mathematics & Quantum Information, Cagliari, November 3–4, 2016.
Come faremmo senza matematica?
Festival della Scienza “La Scienza che unisce i popoli”, Cagliari, November 8–13. Invited talk, 2016.
Capitolo II. Rilievo 3D non a contatto: tecniche speciali per l'arte rupestre.
Presentazione del volume: Nuove tecniche di documentazione e di analisi per una ricostruzione delle società dalla fine del V al III millennio a.C. A cura di Giuseppa Tanda, Editore Condaghes. Cittadella dei Musei “Giovanni Lilliu”, Cagliari, March 31. Invited talk, 2017.
A relaxed Gauss-Newton algorithm for low frequency EM data inversion with applications in geophysics.
SIAM Conference on Mathematical and Computational Issues in the Geosciences, Minisymposium on Mathematical and Computational Advances in Geoelectromagnetic Forward and Inverse Modelling (MS68, MS78), Erlangen (Germany), September 10–14. Invited talk, 2017.
Numeri dappertutto: la matematica nella società.
SulciScienza, idee per la cultura, per la società, per la scienza, Carbonia, November 13–19. Invited talk, 2017.
Improving sharpness in geophysical imaging by TV-based regularization.
SIAM Conference on Imaging Science, Minisymposium on Numerical Linear Algebra Techniques for Image Restoration and Reconstruction (MS34), Bologna (Italy), June 5–8. Invited talk, 2018.
Regularization parameter determination in the numerical solution of first kind integral equations.
SIMAI 2018, Minisymposium MS-20 - Numerical Methods for Integral Equations and Applications, Roma, July 2–6. Invited talk, 2018.
New and not so new methods for estimating a regularization parameter.
INdAM intensive period: Computational Methods for Inverse Problems in Imaging (CMIPI 2018), Como, July 16–18. Invited talk, 2018.
Smooth and sparse inversion of EMI data from multi-configuration measurements.
IEEE-RTSI 2018,
International Forum on Research and
Technology for Society and Industry, Technical Session on Advances Numerical
Modeling, Palermo (Italy), September 10–13. Invited talk, 2018.
Photometric stereo under unknown lights position.
Recent Advances in Scientific Computation - ETNA25, Santa Margherita di Pula (Cagliari, Italy), May 27–29, 2019.
Recovering the electromagnetic features of the subsoil via linear and nonlinear models.
ICIAM 2019 - International Congress on Industrial and Applied Mathematics, MS FT-S-4 - Computational Methods for Inverse Problems, Valencia, Spain, July 15–19. Invited talk, 2019.
On the solution of the photometric stereo problem with unknown lighting.
INdAM Workshop - Mathematical Methods for Objects Reconstruction: from 3D Vision to 3D Printing, Rome, Italy, February 10–12, 2021.
A Nyström method for second kind Fredholm integral equations based on anti-Gauss quadrature rules.
SIMAI 2020+2021, MS-01 - New trends in Numerical Analysis: Theory and Applications, Parma, Italy, August 30–September 3, 2021.
Mathematical tools for dating and documentation in archaeological science: seriation and photometric stereo shape reconstruction.
XIXth world UISPP Congress, S15-A - Hypogéisme funéraire en Europe et en Afrique, Meknés, Morocco, September 2–7, 2021.
Computing the regularized minimal-norm solution of an overdetermined system of Fredholm integral equations of the first kind in a RKHS.
5th Dolomites Workshop on Constructive Approximation and Applications, Session on Numerical Integration, Integral Equations and Transforms, Canazei, Italy, September 6–10, 2021.
Regularized solution of large scale underdetermined nonlinear least-squares problems.
NMLSP 2022: Numerical Methods for Large Scale Problems, MS5: Recent developments in projection methods with applications, Belgrade, Serbia, June 6–10, 2022.
Regularized minimal-norm solution of overdetermined first kind integral models.
FAATNA 2022: Functional Analysis, Approximation Theory and Numerical Analysis, S1: Integral Equations: Recent Developments in Numerics and Applications, Matera, Italy, July 5–8, 2022.
From Wiener algebras to ill-posed problems: (almost) 30 years with Cor.
Giornata di Discussioni Matematiche in Onore di Cornelis van der Mee, Cagliari, Italy, May 12, 2023.
Extrapolation methods for choosing a regularization parameter.
25th ILAS Conference, Madrid, MSC07: The interplay between linear-multilinear algebra and rational approximation, Madrid, Spain, June 12–16, 2023.
Gaussian quadrature rules for complex network analysis.
NASCA23 - Numerical Analysis and Scientific Computation with Applications, MS on Gaussian quadrature rules: from integrals to Krylov methods, Athens, Greece, July 3–6, 2023.
On approximating continuous measures by discrete measures.
SIMAI 2023, MS-15 - New trends in Applicable Approximation Theory, Matera, Italy, August 28–September 1, 2023.
On the ideality of photometric stereo datasets under unknown lighting.
CAM23 - Computational and Applied Mathematics, Selva di Fasano, Italy, August 29–September 1, 2023.
A projection method for large scale linear inverse problems with a general form regularizing term.
SIAM Conference on Applied Linear Algebra (LA24), MS114 Acceleration of Methods for the Solution of Large Scale Problems, Paris, France, May 13–17, 2024.
On the computation of the pseudoinverse of large and sparse regularization matrices.
Numerical Linear Algebra (NLACIRM24), Luminy, France, September 16–20, 2024.