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- Nuno Fachada, Vitor V. Lopes, Rui Costa Martins, Agostinho C. Rosa
- International Journal of Parallel Programming
- 2015

Agent-based modeling (ABM) is a bottom-up modeling approach, where each entity of the system being modeled is uniquely represented as an independent decision-making agent. Large scale emergent behavior in ABMs is population sensitive. As such, the number of agents in a simulation should be able to reflect the reality of the system being modeled, which can… (More)

- Nuno Fachada, Vitor V. Lopes, Rui Costa Martins, Agostinho C. Rosa
- PeerJ PrePrints
- 2015

Agent-based modeling (ABM) is a bottom-up modeling approach, where each entity of the system being modeled is uniquely represented as an independent decision-making agent. ABMs are very sensitive to implementation details. Thus, it is very easy to inadvertently introduce changes which modify model dynamics. Such problems usually arise due to the lack of… (More)

- Carlos Isidoro, Nuno Fachada, Fábio Barata, Agostinho C. Rosa
- EPIA
- 2009

The paper presents an agent based model of the Aedes ae-gypti mosquito and it is focused on simulations of population dynamics and population control strategies. The agents model the main aspects of mosquito's ecology and behavior, while the environmental components are implemented as layer of dynamic elements obeying to physical laws. The main objective of… (More)

- Nuno Fachada, Vitor V. Lopes, Agostinho C. Rosa
- SAC
- 2009

Computational models of the immune system and pathogenic agents have several applications, such as theory testing and validation, or as a complement to first stages of drug trials. One possible application is the prediction of the lethality of new Influenza A strains, which are constantly created due to antigenic drift and shift. Here, we present an… (More)

- Nuno Fachada, Vitor V. Lopes, Rui Costa Martins, Agostinho C. Rosa
- Simulation Modelling Practice and Theory
- 2017

Computational models of complex systems are usually elaborate and sensitive to implementation details, characteristics which often affect their verification and validation. Model replication is a possible solution to this issue. It avoids biases associated with the language or toolkit used to develop the original model, not only promoting its verification… (More)

- Carlos Isidoro, Nuno Fachada, Fábio Barata, Agostinho C. Rosa
- ECAL
- 2009

Computer simulations play an important role as a tool for predicting and understanding the behaviour of complex systems. The immune system is one such system, and it is feasible to expect that a well tuned model can provide qualitatively similar behaviour. Such models can have several applications, among which is its use as a virtual test bench in the first… (More)

- Nuno Fachada, Vitor V. Lopes, Rui Costa Martins, Agostinho C. Rosa
- ArXiv
- 2016

The micompr R package implements a procedure for comparing multivariate samples associated with different groups. The procedure uses principal component analysis to convert multivariate observations into a set of linearly uncorrelated statistical measures, which are then compared using a number of statistical methods. This technique is independent of the… (More)

- Nuno Fachada, Vitor V. Lopes, Rui C. Martins, Agostinho C. Rosa
- 2016

SimOutUtils is a suite of MATLAB/Octave functions for studying and analyzing time series-like output from stochastic simulation models. More specifically, SimOutUtils allows modelers to study and visualize simulation output dynamics, perform distributional analysis of output statistical summaries, as well as compare these summaries in order to assert the… (More)

- Nuno Fachada, Mário A. T. Figueiredo, Vitor V. Lopes, Rui Costa Martins, Agostinho C. Rosa
- Pattern Recognition Letters
- 2014

This paper proposes new clustering criteria for distinguishing Saccharomyces cerevisiae (yeast) strains using their spectrometric signature. These criteria are introduced in an agglomerative hierarchical clustering context, and consist of: (a) minimizing the total volume of clusters, as given by their respective convex hulls; and, (b) minimizing the global… (More)