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HankShihWHQWistron-4920 avatar image
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HankShihWHQWistron-4920 asked HankShihWHQWistron-4920 commented

What does the confidence mean in azure speech to text SDK?

Hello, With Azure speech to text sdk, i can get the confidence for each recognized result in NBest.

But, what does the confidence mean?

Is there any mathematical formula which is used to calculate confidence?

Thank you.

azure-speech
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@HankShihWHQWistron-4920 Here is a easy explanation of confidence score. I don't think there is a Microsoft official formula for it. Thanks for the understanding and let me know if you have more question.

Regards,
Yutong

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Hi, thanks for your answer.

I want to know the two questions

  1. What can affect the confidence score?

  2. Is the score about the accuracy of speech to text?

Thanks

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1 Answer

YutongTie-MSFT avatar image
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YutongTie-MSFT answered

Hello,

The confidence score is the confidence of recognition, from 0.0 (no confidence) to 1.0 (full confidence). A score of 1 is likely an exact result, while a score of 0 means, this is no possibility for this result. I don't think there is an exact formula to share, but I am checking internally to see if there is more detail regarding to this.

Regards,
Yutong

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