User profiles for Mikael Johansson

Mikael Johansson - Verified email at kth.se - Cited by 18473
Mikael Johansson - Verified email at umu.se - Cited by 6596
Mikael Johansson - Verified email at psy.lu.se - Cited by 3721

The convergence of sparsified gradient methods

D Alistarh, T Hoefler, M Johansson… - Advances in …, 2018 - proceedings.neurips.cc
Distributed training of massive machine learning models, in particular deep neural networks,
via Stochastic Gradient Descent (SGD) is becoming commonplace. Several families of …

Polymer photovoltaic cells with conducting polymer anodes

F Zhang, M Johansson, MR Andersson… - Advanced …, 2002 - Wiley Online Library
Conducting polymer anodes for photovoltaic cells based on polyethylendioxythiophene (PEDOT)
and its derivatives (see Figure) are reported. The results presented here show that it is …

[BOOK][B] Piecewise linear control systems: a computational approach

MKJ Johansson - 2003 - books.google.com
… In particular, Karl-Henrik Johansson, Haitham Hindi and Lin Xiao provided many constructive
comments on a late draft that greatly enhanced the quality of this book. All the remaining …

Computation of piecewise quadratic Lyapunov functions for hybrid systems

M Johansson, A Rantzer - 1997 European Control Conference …, 1997 - ieeexplore.ieee.org
This paper presents a computational approach to stability analysis of nonlinear and hybrid
systems. The search for a piecewise quadratic Lyapunov function is formulated as a convex …

Subgradient methods and consensus algorithms for solving convex optimization problems

B Johansson, T Keviczky, M Johansson… - 2008 47th IEEE …, 2008 - ieeexplore.ieee.org
In this paper we propose a subgradient method for solving coupled optimization problems in
a distributed way given restrictions on the communication topology. The iterative procedure …

Piecewise quadratic stability of fuzzy systems

M Johansson, A Rantzer… - IEEE Transactions on …, 1999 - ieeexplore.ieee.org
Presents an approach to stability analysis of fuzzy systems. The analysis is based on Lyapunov
functions that are continuous and piecewise quadratic. The approach exploits the gain-…

Piecewise linear quadratic optimal control

A Rantzer, M Johansson - IEEE transactions on automatic …, 2002 - ieeexplore.ieee.org
The use of piecewise quadratic cost functions is extended from stability analysis of piecewise
linear systems to performance analysis and optimal control. Lower bounds on the optimal …

A randomized incremental subgradient method for distributed optimization in networked systems

B Johansson, M Rabi, M Johansson - SIAM Journal on Optimization, 2010 - SIAM
We present an algorithm that generalizes the randomized incremental subgradient method
with fixed stepsize due to Nedić and Bertsekas [SIAM J. Optim., 12 (2001), pp. 109–138]. Our …

Anti-VEGF treatment reduces blood supply and increases tumor cell invasion in glioblastoma

O Keunen, M Johansson, A Oudin… - Proceedings of the …, 2011 - National Acad Sciences
Bevacizumab, an antibody against vascular endothelial growth factor (VEGF), is a promising,
yet controversial, drug in human glioblastoma treatment (GBM). Its effects on tumor burden, …

Simultaneous routing and resource allocation via dual decomposition

L Xiao, M Johansson, SP Boyd - IEEE Transactions on …, 2004 - ieeexplore.ieee.org
In wireless data networks, the optimal routing of data depends on the link capacities which,
in turn, are determined by the allocation of communications resources (such as transmit …