Unico feature calculation

[He_Ka]

Hello,

I'm trying to figure out how Unico calculates it feature values during .arff creation.

Unfortunately, if I calculate the features as described in AN5804, the feature values differ from the Unico output.

I have attached two files, accelerometer samples with five values per axis and the .arff output of Unico for a window size of five (feature mean X/Y/Z/V).

Can someone explain how the feature values are calculated by Unico during .arff creation?

Best regards

[Federica Bossi · Accepted solution]

Hi @He_Ka ,

Welcome to ST Community!

Values are represented in half-precision floating point, how the values of features and filters are calculated in Unico is confidential information.

Note that it is important to use Unico / MEMS Studio to generate the ARFF file because features/filters are calculated exactly as done at runtime by the embedded logic of Machine Learning Core. If you do not want to use GUI-based tools, such as Unico and MEMS Studio, you can use the Python script available on GitHub.

[He_Ka]

Thank you for your explanation.

The python scripts you mentioned refer to an mlc_configuration_tool in the setup section of the readme. Unfortunately I am not able to locate a file with this name in my Linux based Unico installation. Can you help me with that?

Best regards