'Accuracy of Cognito and Comprehend for PII detection

I have been through the documentation of both AWS Cognito and Azure Comprehend, trying to understand the accuracy or both TPR and FPR of the two services when it comes to identify PII and PHI inside a document without performing custom training. Unfortunately, I wasn't able to find any number and I do not have enough data to build my own confusion matrix, do any of you have an idea - even indicative - of their performances?

Thanks!

azurenlpamazon-cognitopii


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