Manyresearchgroupsinacademiaandindustryarefocusingontheperformanceimprovementofelectronicnose(E-nose)systemsmainlyinvolvingthree.optimizations,whicharesensitivematerialselectionandsensorarrayoptimization,enhancedfeatureextractionmethodsandpatternrecognitionmethodselection.Foraspecificapplication,thefeatureextractionmethodisabasicpartofthesethreeoptimizationsandakeypointinE-nosesystemperformanceimprovement.Theaimofafeatureextract
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