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The current model consumed training data up until 30th March 2023. The retraining process included one a months worth of data after the retirement of Liddell. We also did considerable experimentation around conducted many experiments including changing the feature set (input variables) as well as boosting (weighting) more recent training periods.
Much to our surprise our performance metrics, when measured against the validation set (a weeks worth of recent data not used in the training set), showed that the original model either performed better or more or less equal to all new models. As a result we felt it best to preserve the consistency afforded by the current model hence no update to the model was made for the 6th of June.
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