Evolving interpolating models of net ecosystem CO2 exchange using grammatical evolution

Authors:
Miguel Nicolau;Matthew Saunders;Michael O'Neill;Bruce Osborne;Anthony Brabazon
Affiliations:
Natural Computing Research & Applications Group, University College Dublin, Dublin, Ireland;UCD School of Biology and Evironmental Science, University College Dublin, Dublin, Ireland;Natural Computing Research & Applications Group, University College Dublin, Dublin, Ireland;UCD School of Biology and Evironmental Science, University College Dublin, Dublin, Ireland;Natural Computing Research & Applications Group, University College Dublin, Dublin, Ireland
Venue:
EuroGP'12 Proceedings of the 15th European conference on Genetic Programming
Year:
2012

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Abstract

Accurate measurements of Net Ecosystem Exchange of CO2 between atmosphere and biosphere are required in order to estimate annual carbon budgets. These are typically obtained with Eddy Covariance techniques. Unfortunately, these techniques are often both noisy and incomplete, due to data loss through equipment failure and routine maintenance, and require gap-filling techniques in order to provide accurate annual budgets. In this study, a grammar-based version of Genetic Programming is employed to generate interpolating models for flux data. The evolved models are robust, and their symbolic nature provides further understanding of the environmental variables involved.