Dynamic calculating balanced accuracy for multi-class

Hi prusik369 ,
 
Can you try:

Balanced Accuracy (Dynamic) :=
VAR Classes = VALUES('visualization_dataset'[NIC_ACTUAL])

VAR PerClassAccuracy =
ADDCOLUMNS(
Classes,
"TP", CALCULATE(COUNTROWS('visualization_dataset'), 'visualization_dataset'[NIC_ACTUAL] = EARLIER('visualization_dataset'[NIC_ACTUAL]) && 'visualization_dataset'[NIC_PREDICTION] = EARLIER('visualization_dataset'[NIC_ACTUAL])),
"FN", CALCULATE(COUNTROWS('visualization_dataset'), 'visualization_dataset'[NIC_ACTUAL] = EARLIER('visualization_dataset'[NIC_ACTUAL]) && 'visualization_dataset'[NIC_PREDICTION] <> EARLIER('visualization_dataset'[NIC_ACTUAL])),
"FP", CALCULATE(COUNTROWS('visualization_dataset'), 'visualization_dataset'[NIC_ACTUAL] <> EARLIER('visualization_dataset'[NIC_ACTUAL]) && 'visualization_dataset'[NIC_PREDICTION] = EARLIER('visualization_dataset'[NIC_ACTUAL])),
"TN", CALCULATE(COUNTROWS('visualization_dataset'), 'visualization_dataset'[NIC_ACTUAL] <> EARLIER('visualization_dataset'[NIC_ACTUAL]) && 'visualization_dataset'[NIC_PREDICTION] <> EARLIER('visualization_dataset'[NIC_ACTUAL]))
)

VAR WithScores =
ADDCOLUMNS(
PerClassAccuracy,
"Sensitivity", DIVIDE([TP], [TP] + [FN]),
"Specificity", DIVIDE([TN], [TN] + [FP]),
"BalancedAcc", DIVIDE(DIVIDE([TP], [TP] + [FN]) + DIVIDE([TN], [TN] + [FP]), 2)
)

VAR FinalResult =
AVERAGEX(WithScores, [BalancedAcc])

RETURN
FinalResult

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Thank You