User profiles for Mikael Johansson
The convergence of sparsified gradient methods
Distributed training of massive machine learning models, in particular deep neural networks,
via Stochastic Gradient Descent (SGD) is becoming commonplace. Several families of …
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 …
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 …
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 …
systems. The search for a piecewise quadratic Lyapunov function is formulated as a convex …
Subgradient methods and consensus algorithms for solving convex optimization problems
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 …
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-…
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 …
linear systems to performance analysis and optimal control. Lower bounds on the optimal …
A randomized incremental subgradient method for distributed optimization in networked systems
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 …
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
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, …
yet controversial, drug in human glioblastoma treatment (GBM). Its effects on tumor burden, …
Simultaneous routing and resource allocation via dual decomposition
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 …
in turn, are determined by the allocation of communications resources (such as transmit …