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Martin Hasler

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Publications associées (53)

Nonlinear Average Consensus

Martin Hasler, Leonidas Georgopoulos

We present an algorithm for nonlinear consensus in complex networks. Our motivation draws from analysis on the algorithm based on a weighted linear update protocol. Comparison of the asymptotic with early convergence rate encourages an alternative algorith ...

IEICE2009

Frequency synchronization in a random oscillator network

Martin Hasler

In this paper we study the transition from incoherence to coherence in large network of arbitrary coupled, heterogeneous, continuous-time dynamical systems (phase oscillators). We analytically study a generalized Kuramoto model by the instrumentality of or ...

2009

Forest fire localization using distributed algorithms in wireless sensor networks

Martin Hasler, Alireza Khadivi, Leonidas Georgopoulos

The fire localization using a distributed consensus finding algorithm in a wireless sensor network is described. The fire is circumscribed by a circle. The information is available at all sensor nodes that are alive, which makes it robust against failures ...

Electromagnetics Acad, 777 Concord Avenue, Ste 207, Cambridge, Ma 02138 Usa2009

'Glocal' Robustness Analysis and Model Discrimination for Circadian Oscillators

Martin Hasler, Marc Hafner

To characterize the behavior and robustness of cellular circuits with many unknown parameters is a major challenge for systems biology. Its difficulty rises exponentially with the number of circuit components. We here propose a novel analysis method to mee ...

2009

Forest fire localization using a distributed consensus algorithm in wireless sensor networks

Martin Hasler, Alireza Khadivi, Leonidas Georgopoulos

2009

Alpha rhythm and hypofrontality in schizophrenia

Martin Hasler, Oscar De Feo, Reto Meuli, Mahdi Jalili, Kim Do

2008

Reservoir Optimization in Recurrent Neural Networks using Kronecker Kernels

Martin Hasler, Mahdi Jalili, Ali Ajdari Rad

In this paper, using the mathematical properties of self-kronecker-production of small size random matrices, a simple but effective method is presented to optimize the reservoir of an echo state network given a certain task. The experimental results invest ...

IEEE2008

Predicting single spikes and spike patterns with the Hindmarsh–Rose model

Martin Hasler

Most simple neuron models are only able to model traditional spiking behavior. As physiologists discover and classify different electrical phenotypes, computational neuroscientists become interested in using simple phenomenological models that can exhibit ...

Springer-Verlag2008

Efficient rewirings for enhancing synchronizability of dynamical networks

Martin Hasler, Mahdi Jalili, Ali Ajdari Rad

American Institute of Physics2008

Reducing Synchronization Cost in Weighted Dynamical Networks Using Betweenness Centrality Measures

Martin Hasler, Mahdi Jalili, Ali Ajdari Rad

In this paper we investigate optimization of synchronization cost in undirected dynamical networks. To do so, proper weights are assigned to the networks’ edges considering node and edge betweenness centrality measures. The proposed method gives near-optim ...

IEEE2008

Enhancing synchronizability of weighted dynamical networks using betweenness centrality

Martin Hasler, Mahdi Jalili, Ali Ajdari Rad

By considering the eigenratio of the Laplacian of the connection graph as a synchronizability measure, we propose a procedure for weighting dynamical networks to enhance their synchronizability. The method is based on node and edge betweenness centrality m ...

2008

Mixed-domain system representation using Volterra series

Martin Hasler

Mixed-signal systems combine analog and digital signal processing in one overall design that should be integrated as a single system on chip. At system level, the separation into isolated subsystem representations for analog and digital parts needs to be o ...

IEEE2008

A novel approach for the analysis of synchronization in multivariate EEG time series

Martin Hasler, Oscar De Feo, Mahdi Jalili

Elsevier2008

Dysconnection Topography in Schizophrenia Revealed with State-Space Analysis of EEG

Martin Hasler, Oscar De Feo, Reto Meuli, Mahdi Jalili, Kim Do

Background The dysconnection hypothesis has been proposed to account for pathophysiological mechanisms underlying schizophrenia. Widespread structural changes suggesting abnormal connectivity in schizophrenia have been imaged. A functional counterpart of t ...

2007

When Symmetrization Guarantees Synchronization in Directed Networks

Martin Hasler, Igor Belykh

World Scientific Publishing2007

Enhancing synchronizability of dynamical networks using the connection graph stability method

Martin Hasler, Mahdi Jalili, Ali Ajdari Rad

Dynamical networks with diffusive couplings are investigated from the point of view of synchronizability. Arbitrary connection graphs are admitted but the coupling is symmetric. Networks with equal interaction coefficients for all edges of the interaction ...

2007

Consideration of the effect of the anesthesia in the thalamocortical assemblies

Martin Hasler, Kumiko Oshima, Borja Ibarz Gabardos

Despite intensive research efforts, the effects of anesthesia on brain physiology and function have not been satisfactorily explained yet. Nevertheless, from what has been discovered up to now, we can attribute the effect of the anesthetics to changes in c ...

2007

Automatic Methods for Motor Intention Recognition from Spike Rates

Martin Hasler, Jugoslava Acimovic

In this paper we present a method for automatic detection of motor intention from in vivo neuronal recordings in monkeys. The analysis relies on a data base of spike trains collected in a series of experiments aiming to study the hand-eye coordination mech ...

2007

Classes of stochastically switched (blinking) systems

Martin Hasler, Igor Belykh

It is investigated to what extent the trajectories of a stochastically switched (blinking) system follow the corresponding trajectories of the averaged system. Four cases have to be distinguished, depending on whether or not the averaged system has a uniqu ...

2007

Generalized connection graph method for synchronization in asymmetrical networks

Martin Hasler, Igor Belykh

We present a general framework for studying global complete synchronization in networks of dynamical systems with asymmetrical connections. We extend the connection graph stability method, originally developed for symmetrically coupled networks, to the gen ...

2006

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