How Do I Add Unknown Category Words to Eliminate False Positives

#1

I tried the demo on Edge Impulse’s landing page to recognize a wake word and had a large number of false positives and some false negatives. How do I add data of my saying random words to the unknown category and retrain the model?

#2

Hi @IML2:

  1. Go to Data acquisition
  2. Click Show options and select either phone or computer (or a dev board if you have one).
  3. Set label to ‘unknown’, category to ‘training’ and record data (this can be a long sample, just say the words with 1 second spacing between them).
  4. Go to the sample you just created, click the three dots -> split sample.
  5. You might want to rebalance the dataset at some point (an indicator will show on data acquisition).

Done!