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capri:star [2018/02/09 13:51] – external edit 127.0.0.1capri:star [2018/10/24 21:11] – Updated release notes torbjornj
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 ===== Release notes (cumulative) ===== ===== Release notes (cumulative) =====
 +
 +=== STAR 2.2 ===
 +
 +This maintenance release resolves several important calibration issues.
 +
 +  * The market model did not calibrate properly due to an inconsistently included "BREXIT" policy
 +  * The supply models did not calibrate properly due to missing parameters for manure trade
 +  * The stability tests did not give true results due to an inconsistent use of results_in and results_out, essentially mixing fertilizer parameters of two runs
 +  * Several minor bug fixes, e.g. in linking supply and demand and scaling of NMIN 
 +  * A final overhaul of feeding is still due in Maintenance Release 2.3.
 +
 +=== STAR 2.1 ===
 +
 +This maintenance release implements the revised treatment of fertilizers and feed. For fertilizers, a bi-level programming approach has been implemented, where the flows of fertilizers are modelled as a Bayesian estimator ensuring an interior solution that is "close to" the calibrated flows when simulating and close to a prior distribution when calibrating. For feed, the distribution of feeding stuffs to animals was revised to improve plausibility and stability, but without principal changes of the way the model works.
 +
 +In addition to the feed and fertilizer modifications, the following bugs or minor issues were addressed:
 +  * Changing the order of work steps and tasks in the GUI to reflect the order in which the steps can be carried out (e.g. FAOSTAT first)
 +  * An issue with price experiments in Threads-mode was resolved
 +  * Start at an infrastructure to report the results of the fertilizer allocation to DATAOUT (reports\fert_dist_results.gms)
 +  * Relaxing the winter cover requirement in one Finnish region to avoid infeasibility in baselines.
 +  * The income computations for EAA had inconsistent prices for FODDER, so that the regional farms had costs <> revenues for fodder, which should not be possible.
 +  * The Dual Analysis of the supply models had not updated versions of some constraints, so that there were an "unexplained rest". (sugar beet and greening restrictions)
 +
 +Finally, the testing routines were augmented and slightly revised, to include individual testing of simulations with supply and market models standalone.
 +
  
 === STAR 2.0 === === STAR 2.0 ===
   
 
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