Hello! Since October 2018 I am a Chargé de Recherche (junior researcher) at INRIA Rennes - Bretagne Atlantique as a member of the Cairn team. From January 2018 to September 2018, I held an INRIA postdoctoral position within Cairn, working on numerical approximation algorithms for energy-efficient computing with
Olivier Sentieys and Tomofumi Yuki. Until December 2017 I was a postdoctoral researcher in the Numerical Analysis group
at Oxford University under the supervision of Nick Trefethen, working on rational
approximation algorithms inside the Chebfun project. Before that,
I obtained my PhD in Computer Science at École Normale Supérieure de Lyon in December 2016 on work regarding algorithmic
and implementation aspects of digital filter design, under the supervision of Nicolas Brisebarre and
Guillaume Hanrot. My current research interests revolve around approximation theory, numerical computations,
computer arithmetic, convex and integer optimization.
CAIRN, IRISA Rennes
Campus de Beaulieu, 263 avenue du Général Leclerc
F-35042 Rennes cedex
E-mail: silviu DOT filip AT inria DOT fr
2017-2018: Numerical Solution of Differential Equations I (tutor), Mathematical Institute, University of Oxford
2015-2016: Architecture matérielle et logicielle (teaching assistant) in L2 at Univ. Lyon 1
2015-2016: Projet Intégré (teaching assistant) in M1 at École Normale Supérieure de Lyon
2014-2015: Calcul Formel (teaching assistant) in M1 at École Normale Supérieure de Lyon
2014-2015: Compilation (teaching assistant) in M1 at École Normale Supérieure de Lyon
2013-2014: Algorithmique 2 (teaching assistant) in L3 at École Normale Supérieure de Lyon
2013-2014: Projet Programmation (teaching assistant) in L3 at École Normale Supérieure de Lyon
Silviu-Ioan Filip. Robust tools for weighted Chebyshev approximation and applications to digital filter design, PhD dissertation, École Normale Supérieure de Lyon, 2016. Available here.
International peer-reviewed journals
Silviu-Ioan Filip. A robust and scalable implementation of the Parks-McClellan algorithm for designing FIR filters, ACM Transactions on Mathematical Software 43, 1 (Aug. 2016), 7:1 - 7:24, preliminary version available here.
Nicolas Brisebarre, Silviu-Ioan Filip, Guillaume Hanrot. A lattice basis reduction approach for the design of finite wordlength FIR filters, IEEE Transactions on Signal Processing 66, 10 (May 2018), 2673 - 2684, preliminary version available here.
Silviu-Ioan Filip, Yuji Nakatsukasa, Nick Trefethen, Bernhard Beckermann, Rational minimax approximation via adaptive barycentric representations, 2017, accepted to SIAM Journal on Scientific Computing, preliminary version available here. Supplementary MATLAB code available here.
Silviu-Ioan Filip, Aurya Javeed, Nick Trefethen, Smooth random functions, random ODEs, and Gaussian processes, accepted to SIAM Review, 2017, preliminary version available here.
Publications in the peer-reviewed proceedings of international conferences
Nicolas Brisebarre, George Constantinides, Miloš Ercegovac, Silviu-Ioan Filip, Matei Istoan, Jean-Michel Muller. A High Throughput Polynomial and Rational Function Approximations Evaluator, accepted to ARITH 25. Preliminary version avalable here.
Publications in the peer-reviewed proceedings of national conferences
Nicolas Brisebarre, Silviu-Ioan Filip, Guillaume Hanrot. De nouveaux résultats sur la synthèse de filtres RIF, short communication at GRETSI 2015.
Articles under submission, research reports
Nicolas Brisebarre, Florent De Dinechin, Silviu-Ioan Filip, Matei Istoan. Automatic generation of hardware FIR filters from a frequency domain specification, 2016, research report available here.
See my Github page. I am also an active contributor to the Chebfun project.
firpm: A scalable C++ implementation of the Parks-McClellan (Remez) algorithm for designing FIR filters
fquantizer: Euclidean lattice-based quantization routines written in C++ for digital filter design