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Environmental Data Integration Using Expert Systems

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Carter, S and Miller, J and Davies, PE and Boukaert, F and Wilson, M (2013) Environmental Data Integration Using Expert Systems. In: Sustainable Engineering Society (SENG) 2013 conference: Looking back. looking forward, September 2013, Barton, ACT.

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Abstract

The Murray Darling Basin Authority’s Sustainable Rivers Audit (SRA) program has
developed a novel method for gathering and making sense of environmental and ecological data. Data
gathered at a large number of sites according to agreed protocols are normalised to produce “metrics”,
which compare observed values to estimated values under reference conditions appropriate to each
variable. Metrics from different locations are spatially aggregated as required, grouped into ecological
themes, and integrated by expert systems to produce condition indicators. The condition indicators for
each theme are then integrated into an overall condition index, used to describe the state of river
ecosystem health. This is used to communicate audit findings to regulatory authorities, and the public.
This paper describes the SRA data processing method, focusing on the role of expert systems. Key
points are how the development of expert systems is facilitated by the use of metrics; by the way in
which environmental specialists define what each integration exercise must do; and by the choice of
membership functions to simplify defuzzification using the centroid method. The paper concludes by
outlining work to apply the SRA principles

Item Type: Conference or Workshop Item (Paper)
Date Deposited: 18 Feb 2014 01:18
Last Modified: 18 Nov 2014 04:58
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