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View article: DT-Stark: a tool for evaluating the effectiveness of digital twins through feedback and perturbations
DT-Stark: a tool for evaluating the effectiveness of digital twins through feedback and perturbations Open
A digital twin is a virtual replica of a physical system that has to interact with it in real-time in order to facilitate decision-making, to reduce failures and costs, and to ensure a coherent and safe system execution. We call effectiven…
View article: Robustness for biochemical networks: Step-by-step approach
Robustness for biochemical networks: Step-by-step approach Open
We propose two step-by-step approaches to the analysis of robustness in biochemical networks. Our aim is to measure the ability of the network to exhibit step-by-step limited variations on the concentration of a species of interest at vary…
View article: ARCH-COMP 2024 Category Report: Falsification
ARCH-COMP 2024 Category Report: Falsification Open
This report presents the results from the falsification category of the 2024 competition in the Applied Verification for Continuous and Hybrid Systems (ARCH) workshop. The report summarizes the competition rules and settings, the benchmark…
View article: The $μ\mathcal{G}$ Language for Programming Graph Neural Networks
The $μ\mathcal{G}$ Language for Programming Graph Neural Networks Open
Graph neural networks form a class of deep learning architectures specifically designed to work with graph-structured data. As such, they share the inherent limitations and problems of deep learning, especially regarding the issues of expl…
View article: Building Call Graph of WebAssembly Programs via Abstract Semantics
Building Call Graph of WebAssembly Programs via Abstract Semantics Open
WebAssembly is a binary format for code that is gaining popularity thanks to its focus on portability and performance. Currently, the most common use case for WebAssembly is execution in a browser. It is also being increasingly adopted as …
View article: Evaluating the Effectiveness of Digital Twins Through Statistical Model Checking with Feedback and Perturbations
Evaluating the Effectiveness of Digital Twins Through Statistical Model Checking with Feedback and Perturbations Open
We present DT-Stark, an extension of the Stark tool aimed at the verification and evaluation of the effectiveness of digital twins, i.e., their ability to direct the physical counterparts. To this end, we introduce feedback in Stark, a spe…
View article: Bio-Stark: A Tool for the Time-Point Robustness Analysis of Biological Systems
Bio-Stark: A Tool for the Time-Point Robustness Analysis of Biological Systems Open
We present Bio-Stark, an extension of Stark for the simulation and analysis of biological systems. Specifically, to simulate the stochastic, dynamical, behaviour of these systems, Bio-Stark exploits the core simulation model of Stark, the …
View article: A Spatial Logic for Simplicial Models
A Spatial Logic for Simplicial Models Open
Collective Adaptive Systems often consist of many heterogeneous components typically organised in groups. These entities interact with each other by adapting their behaviour to pursue individual or collective goals. In these systems, the d…
View article: A framework to measure the robustness of programs in the unpredictable environment
A framework to measure the robustness of programs in the unpredictable environment Open
Due to the diffusion of IoT, modern software systems are often thought to control and coordinate smart devices in order to manage assets and resources, and to guarantee efficient behaviours. For this class of systems, which interact extens…
View article: RobTL: A Temporal Logic for the Robustness of Cyber-Physical Systems
RobTL: A Temporal Logic for the Robustness of Cyber-Physical Systems Open
We propose the Robustness Temporal Logic (RobTL), a novel temporal logic for the specification and analysis of distances between the behaviours of Cyber-Physical Systems (CPSs) over a finite time horizon. Differently from classical tempora…
View article: EvTL: A Temporal Logic for the Transient Analysis of Cyber-Physical Systems
EvTL: A Temporal Logic for the Transient Analysis of Cyber-Physical Systems Open
The behaviour of systems characterised by a closed interaction of software components with the environment is inevitably subject to perturbations and uncertainties. In this paper we propose a general framework for the specification and ver…
View article: A Logic for Monitoring Dynamic Networks of Spatially-distributed Cyber-Physical Systems
A Logic for Monitoring Dynamic Networks of Spatially-distributed Cyber-Physical Systems Open
Cyber-Physical Systems (CPS) consist of inter-wined computational (cyber) and physical components interacting through sensors and/or actuators. Computational elements are networked at every scale and can communicate with each other and wit…
View article: A framework to measure the robustness of programs in the unpredictable environment
A framework to measure the robustness of programs in the unpredictable environment Open
Due to the diffusion of IoT, modern software systems are often thought to control and coordinate smart devices in order to manage assets and resources, and to guarantee efficient behaviours. For this class of systems, which interact extens…
View article: Online monitoring of spatio-temporal properties for imprecise signals
Online monitoring of spatio-temporal properties for imprecise signals Open
From biological systems to cyber-physical systems, monitoring the behavior of such dynamical systems often requires reasoning about complex spatiooral properties of physical and computational entities that are dynamically interconnected an…
View article: Online Monitoring of Spatio-Temporal Properties for Imprecise Signals
Online Monitoring of Spatio-Temporal Properties for Imprecise Signals Open
From biological systems to cyber-physical systems, monitoring the behavior of such dynamical systems often requires to reason about complex spatio-temporal properties of physical and/or computational entities that are dynamically interconn…
View article: Semantics of the probabilistic Lambda CalculusBy Dirk Draheim
Semantics of the probabilistic Lambda CalculusBy Dirk Draheim Open
Review of the book "Semantics of the probabilistic Lambda Calculus" By Dirk Draheim: Springer-Verlag, Berlin Heidelberg, DE, 26 January 2017
View article: A Spatial Logic for a Simplicial Complex Model.
A Spatial Logic for a Simplicial Complex Model. Open
Collective adaptive systems (CAS) consist of many heterogeneous components typically organised in groups. These entities interact with each other by adapting their behaviour to pursue individual or collective goals. The distribution of sys…
View article: A Spatial Logic for Simplicial Models
A Spatial Logic for Simplicial Models Open
Collective Adaptive Systems often consist of many heterogeneous components typically organised in groups. These entities interact with each other by adapting their behaviour to pursue individual or collective goals. In these systems, the d…
View article: MoonLight: A Lightweight Tool for Monitoring Spatio-Temporal Properties
MoonLight: A Lightweight Tool for Monitoring Spatio-Temporal Properties Open
We present MoonLight, a tool for monitoring temporal and spatio-temporal properties of mobile and spatially distributed cyber-physical systems (CPS). In the proposed framework, space is represented as a weighted graph, describing the topol…
View article: Analysis of Spatio-temporal Properties of Stochastic Systems Using TSTL
Analysis of Spatio-temporal Properties of Stochastic Systems Using TSTL Open
In this article, we present Three-Valued spatio-temporal Logic (TSTL), which enriches the available spatiotemporal analysis of properties expressed in Signal spatio-temporal Logic (SSTL), to give further insight into the dynamic behavior o…