86 citations · 93 across the 4 of their papers we have counts for
4 papers
Mixed Integer Programming to Globally Minimize the Economic Load Dispatch Problem With Valve-Point Effect
Michael Azzam, S. Easter Selvan, Augustin Lefèvre +1
Optimal distribution of power among generating units to meet a specific demand subject to system constraints is an ongoing research topic in the power system community. The problem…
A nuclear-norm based convex formulation for informed source separation
Augustin Lefèvre, François Glineur, P. -A. Absil
We study the problem of separating audio sources from a single linear mixture. The goal is to find a decomposition of the single channel spectrogram into a sum of individual contri…
Online algorithms for Nonnegative Matrix Factorization with the Itakura-Saito divergence
Augustin Lefèvre, Francis Bach, Cédric Févotte
Nonnegative matrix factorization (NMF) is now a common tool for audio source separation. When learning NMF on large audio databases, one major drawback is that the complexity in ti…
Stock price jumps: news and volume play a minor role
Armand Joulin, Augustin Lefevre, Daniel Grunberg +1
In order to understand the origin of stock price jumps, we cross-correlate high-frequency time series of stock returns with different news feeds. We find that neither idiosyncratic…