the application would require to have selectivity with multiple gas types beyond 4. Also the AI studio only limits to 4 classes. I imagine the BSEC should be able to easily expand beyond 4. may be the training algorithms require more modification. but thats the question. If Bosch went to the extent of creating the AI infrastucture, the limit of 4 could have been easily expanded to say 16 or something... 4 seems very small number.
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