Gonzalo A. Ruz

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A Medical Claim Fraud/Abuse Detection System based on Data Mining: A Case Study in Chile

Pedro A. Ortega, Cristián J. Figueroa, Gonzalo A. Ruz
DMIN
2006

This paper describes an effective medical claim fraud/abuse detection system based on data mining used by a Chilean private health insurance company. Fraud and abuse in medical claims have become a… (More)

A neurofuzzy color image segmentation method for wood surface defect detection

Gonzalo A. Ruz, Pablo A. Estévez, Claudio A. Perez
2005

In the last decades, several automated visual inspection (AVI) systems have been developed and applied to a wide range of products, including wood (Pham and Alcock 2003). AVI is an automated form of… (More)

Automated visual inspection system for wood defect classification using computational intelligence techniques

Gonzalo A. Ruz, Pablo A. Estévez, Pablo A. Ramírez
Int. J. Systems Science
2009

This article presents improvements in the segmentation module, feature extraction module, and the classification module of a low-cost automated visual inspection (AVI) system for wood defect… (More)

Dynamical and topological robustness of the mammalian cell cycle network: A reverse engineering approach

Gonzalo A. Ruz, Eric Goles Ch., Marco Montalva-Medel, Gary B. Fogel
Biosystems
2014

A common gene regulatory network model is the threshold Boolean network, used for example to model the Arabidopsis thaliana floral morphogenesis network or the fission yeast cell cycle network. In… (More)

Learning gene regulatory networks using the bees algorithm

Gonzalo A. Ruz, Eric Goles Ch.
Neural Computing and Applications
2011

Learning gene regulatory networks under the threshold Boolean network model is presented. To accomplish this, the swarm intelligence technique called the bees algorithm is formulated to learn… (More)

Learning Gene Regulatory Networks with Predefined Attractors for Sequential Updating Schemes Using Simulated Annealing

Gonzalo A. Ruz, Eric Goles Ch.
2010 Ninth International Conference on Machine…
2010

A simulated annealing framework is presented for learning gene regulatory networks with predefined attractors, under the threshold Boolean network model updated sequentially. The proposed method is… (More)

Unsupervised training of Bayesian networks for data clustering

Duc Truong Pham, Gonzalo A. Ruz
2009

This paper presents a new approach to the unsupervised training of Bayesian network classifiers. Three models have been analysed: the Chow and Liu (CL) multinets; the treeaugmented naive Bayes; and a… (More)

Reconstruction and update robustness of the mammalian cell cycle network

Gonzalo A. Ruz, Eric Goles Ch.
2012 IEEE Symposium on Computational Intelligence…
2012

Given the input-output data of the mammalian cell cycle network under a parallel updating scheme, an attempt to construct a threshold Boolean network with the same dynamics is presented. To… (More)

Building Synthetic Networks of the Budding Yeast Cell-Cycle Using Swarm Intelligence

Gonzalo A. Ruz, Tania Timmermann, Eric Goles Ch.
2012 11th International Conference on Machine…
2012

A swarm intelligence technique called the bees algorithm is formulated to build synthetic networks of the budding yeast cell-cycle. The resulting networks contain the original fixed points of the… (More)

Neutral space analysis for a Boolean network model of the fission yeast cell cycle network

Gonzalo A. Ruz, Tania Timmermann, Javiera Barrera, Eric Goles
Biological Research
2014

Interactions between genes and their products give rise to complex circuits known as gene regulatory networks (GRN) that enable cells to process information and respond to external stimuli. Several… (More)

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