Consultation about index_TEA，index_IRR and metrics

[zasddsgg]

Hello, may I ask you something about index_TEA，index_IRR and metrics. Thanks for your help. Wish you a good day.

a) Do index_TEA = len(metrics) (https://github.com/BioSTEAMDevelopmentGroup/Bioindustrial-Park/blob/master/biorefineries/HP/analyses/models_achieved_improvements.py#L857) and index_IRR = len(metrics) (https://github.com/BioSTEAMDevelopmentGroup/Bioindustrial-Park/blob/master/biorefineries/HP/analyses/models_achieved_improvements.py#L942) return the same value? Because the number of metrics elements seems to be certain (https://github.com/BioSTEAMDevelopmentGroup/Bioindustrial-Park/blob/master/biorefineries/HP/analyses/models_achieved_improvements.py#L130-L547).

b) Could I consult you what do index_TEA and index_IRR mean?

c) Are metrics in a Model a tuple or a list (https://biosteam.readthedocs.io/en/latest/API/evaluation/Model.html)? It’s tuple in https://biosteam.readthedocs.io/en/latest/API/evaluation/Model.html#:~:text=metrics%20(tuple%5BMetric%5D)%20%E2%80%93%20Metrics%20to%20be%20evaluated%20by%20model, but a list in https://github.com/BioSTEAMDevelopmentGroup/Bioindustrial-Park/blob/master/biorefineries/lactic/models.py#L87-L97, and a tuple in https://github.com/BioSTEAMDevelopmentGroup/Bioindustrial-Park/blob/master/biorefineries/HP/analyses/models_achieved_improvements.py#L130-L141?

[yalinli2]

For a/b, they aren't the same value because new metrics are added between these lines. It's just simply to know how many metrics there are up to that point - it's not necessary, and since you don't understand it, you don't need to use it. For c, both can work, the Model class can handle both.