Authors:
Jen J. Lee
1
;
Jorge A. Achcar
1
;
Emílio A. C. Barros
2
and
Carlos D. Maciel
1
Affiliations:
1
University of São Paulo (USP), Brazil
;
2
Maringá State University (UEM), Brazil
Keyword(s):
Algae, Bayes, Neural Network, Population, Machine Learning.
Related
Ontology
Subjects/Areas/Topics:
Artificial Intelligence
;
Biomedical Engineering
;
Biomedical Signal Processing
;
Complex Artificial Neural Network Based Systems and Dynamics
;
Computational Intelligence
;
Computer-Supported Education
;
Domain Applications and Case Studies
;
Fuzzy Systems
;
Health Engineering and Technology Applications
;
Human-Computer Interaction
;
Industrial, Financial and Medical Applications
;
Learning Paradigms and Algorithms
;
Methodologies and Methods
;
Neural Networks
;
Neurocomputing
;
Neurotechnology, Electronics and Informatics
;
Pattern Recognition
;
Physiological Computing Systems
;
Sensor Networks
;
Signal Processing
;
Soft Computing
;
Theory and Methods
Abstract:
In biology, advanced modelling techniques are needed since there is a mixture of qualitative, linguistics and numerical data on the environmental and biological relationships. Also, experiments and data collecting are expensive and time consuming, so determine which variables are relevant and using inference models less data demanding are highly desirable. In this work, from a set of 200 multivariate data samples of algae population and environmental variables, we propose a Bayesian method to predict compositional population distribution. This is a good application example, since measuring environmental variables are easier to automate, faster and less expensive than population counting that usually involves the need of a large amount of specialized human interaction. An additive log-ratio transformation and a regression model were applied to the data and 255.000 Gibbs samples were simulated using the OPENBUGS software. Also an Artificial Neural Network (ANN) was designed on Matlab t
o predict the distribution for benchmarking purposes. Both models showed similar prediction performance, but on the Bayesian model an analysis of credible interval of the variables corresponding to the each regression parameters is possible, showing that most of the variables on this study are relevant, which is consistent to the expected results in this case.
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