Changes between Version 1 and Version 2 of EwEugParameterSensitivity


Ignore:
Timestamp:
2010-11-22 01:16:41 (8 years ago)
Author:
shermanl
Comment:

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  • EwEugParameterSensitivity

    v1 v2  
    55The vulnerability parameter is in general not subject to direct measurement. There are, however, other ways of estimating it, and Ecosim includes two independent methods of estimation: 
    66 
    7   1. Build Ecopath models for a system covering two different time periods, and use a routine included in Ecosim to search for vulnerability parameter settings that with the given exploitation rates will make it possible to move from the first to the second model state; 
    8  
    9   2. Through fitting to time series data (see [wiki:EwEugTimeSeriesFittingInEcosim Fitting to time series data] and [wiki:EwEugHintsForFittingModelsToTimeSeriesData Hints for fitting models to time series data]). 
     7 1. Build Ecopath models for a system covering two different time periods, and use a routine included in Ecosim to search for vulnerability parameter settings that with the given exploitation rates will make it possible to move from the first to the second model state; 
     8 1. Through fitting to time series data (see [EwEugFitToTimeSeries Fitting to time series data] and [EwEugHintsForFittingModelsToTimeSeriesReferenceData Hints for fitting models to time series data]). 
    109 
    1110It is possible and indeed recommended to use all of these methods to obtain estimates for the vulnerability parameters.