75 citations · 262 across the 20 of their papers we have counts for
28 papers
Robust synchronization of heterogeneous robot swarms on the sphere
Johan Markdahl, Daniele Proverbio, Jorge Goncalves
Synchronization on the sphere is important to certain control applications in swarm robotics. Of recent interest is the Lohe model, which generalizes the Kuramoto model from the ci…
A multifactorial evaluation framework for gene regulatory network reconstruction
Laurent Mombaerts, Atte Aalto, Johan Markdahl +1
In the past years, many computational methods have been developed to infer the structure of gene regulatory networks from time-series data. However, the applicability and accuracy…
Linear system identification from ensemble snapshot observations
Atte Aalto, Jorge Goncalves
Developments in transcriptomics techniques have caused a large demand in tailored computational methods for modelling gene expression dynamics from experimental data. Recently, so-…
A state-space approach to sparse dynamic network reconstruction
Zuogong Yue, Johan Thunberg, Lennart Ljung +1
Dynamic network reconstruction has been shown to be challenging due to the requirements on sparse network structures and network identifiability. The direct parametric method (e.g.…
Continuous time Gaussian process dynamical models in gene regulatory network inference
Atte Aalto, Lauri Viitasaari, Pauliina Ilmonen +2
One of the focus areas of modern scientific research is to reveal mysteries related to genes and their interactions. The dynamic interactions between genes can be encoded into a ge…
High-dimensional Kuramoto models on Stiefel manifolds synchronize complex networks almost globally
Johan Markdahl, Johan Thunberg, Jorge Goncalves
The Kuramoto model of coupled phase oscillators is often used to describe synchronization phenomena in nature. Some applications, e.g., quantum synchronization and rigid-body attit…
A Lifting method for analyzing distributed synchronization on the unit sphere
Johan Thunberg, Johan Markdahl, Florian Bernard +1
This paper introduces a new lifting method for analyzing convergence of continuous-time distributed synchronization/consensus systems on the unit sphere. Points on the d-dimensiona…
Synchronisation of Partial Multi-Matchings via Non-negative Factorisations
Florian Bernard, Johan Thunberg, Jorge Goncalves +1
In this work we study permutation synchronisation for the challenging case of partial permutations, which plays an important role for the problem of matching multiple objects (e.g.…
Towards Almost Global Synchronization on the Stiefel Manifold
Johan Markdahl, Johan Thunberg, Jorge Goncalves
A graph is referred to as -synchronizing if, roughly speaking, the Kuramoto-like model whose interaction topology is given by synchronizes…
An Approach to Sparse Continuous-time System Identification from Unevenly Sampled Data
Rui Teixeira Ribeiro, Alexandre Mauroy, Jorge Goncalves
In this work, we address the problem of identifying sparse continuous-time dynamical systems when the spacing between successive samples (the sampling period) is not constant over…
Bayesian variable selection in linear dynamical systems
Atte Aalto, Jorge Goncalves
We develop a method for reconstructing regulatory interconnection networks between variables evolving according to a linear dynamical system. The work is motivated by the problem o…
Experimental design trade-offs for gene regulatory network inference: an in silico study of the yeast Saccharomyces cerevisiae cell cycle
Johan Markdahl, Nicolo Colombo, Johan Thunberg +1
Time-series of high throughput gene sequencing data intended for gene regulatory network (GRN) inference are often short due to the high costs of sampling cell systems. Moreover, e…
Koopman-based lifting techniques for nonlinear systems identification
Alexandre Mauroy, Jorge Goncalves
We develop a novel lifting technique for nonlinear system identification based on the framework of the Koopman operator. The key idea is to identify the linear (infinitedimensional…
Dynamic controllers for column synchronization of rotation matrices: a QR-factorization approach
Johan Thunberg, Johan Markdahl, Jorge Goncalves
In the multi-agent systems setting, this paper addresses continuous-time distributed synchronization of columns of rotation matrices. More precisely, k specific columns shall be sy…
Distributed methods for synchronization of orthogonal matrices over graphs
Johan Thunberg, Florian Bernard, Jorge Goncalves
This paper addresses the problem of synchronizing orthogonal matrices over directed graphs. For synchronized transformations (or matrices), composite transformations over loops equ…
Dynamic Network Reconstruction from Heterogeneous Datasets
Zuogong Yue, Johan Thunberg, Wei Pan +2
Performing multiple experiments is common when learning internal mechanisms of complex systems. These experiments can include perturbations to parameters or external disturbances.…
Almost global consensus on the n-sphere
Johan Markdahl, Johan Thunberg, Jorge Goncalves
This paper establishes novel results regarding the global convergence properties of a large class of consensus protocols for multi-agent systems that evolve in continuous time on t…
Inverse Problems for Matrix Exponential in System Identification: System Aliasing
Zuogon Yue, Johan Thunberg, Jorge Goncalves
This note addresses identification of the -matrix in continuous time linear dynamical systems on state-space form. If this matrix is partially known or known to have a sparse st…
Shaping Pulses to Control Bistable Monotone Systems Using Koopman Operator
Aivar Sootla, Alexandre Mauroy, Jorge Goncalves
In this paper, we further develop a recently proposed control method to switch a bistable system between its steady states using temporal pulses. The motivation for using pulses co…
Identification of Sparse Continuous-Time Linear Systems with Low Sampling Rate: Optimization Approaches
Zuogong Yue, Johan Thunberg, Lennart Ljung +1
This paper addresses identification of sparse linear and noise-driven continuous-time state-space systems, i.e., the right-hand sides in the dynamical equations depend only on a su…
Systems Aliasing in Dynamic Network Reconstruction: Issues on Low Sampling Frequencies
Zuogon Yue, Johan Thunberg, Lennart Ljung +2
Network reconstruction of dynamical continuous-time (CT) systems is motivated by applications in many fields. Due to experimental limitations, especially in biology, data could be…
Linear identification of nonlinear systems: A lifting technique based on the Koopman operator
Alexandre Mauroy, Jorge Goncalves
We exploit the key idea that nonlinear system identification is equivalent to linear identification of the socalled Koopman operator. Instead of considering nonlinear system identi…
Shape-aware Surface Reconstruction from Sparse 3D Point-Clouds
Florian Bernard, Luis Salamanca, Johan Thunberg +7
The reconstruction of an object's shape or surface from a set of 3D points plays an important role in medical image analysis, e.g. in anatomy reconstruction from tomographic measur…
Consensus and Formation Control on SE(3) for Switching Topologies
Johan Thunberg, Xiaoming Hu, Jorge Goncalves
This paper addresses the consensus problem and the formation problem on SE(3) in multi-agent systems with directed and switching interconnection topologies. Several control laws ar…