Machine Learning Data Crunching/Storage

hello

i machine learning sensors attached arduino. looking @ how going store data , pretty complicated crunching. have atmega2560 use application. real question if there chance allocate 4000 element array , process data in timely manner assume pretty measly processor.

i looking @ these 2 methods:
1. store data in atmega ram , use processor (more or less looking confirmation stupid , won't work.)
2. use bluetooth hardware module communicates device (pc or iphone) , allow hardware store data in ram, crunching, , provide feedback atmega.

as always, help.

sounds heavy processing. not mega's strong suit. 4000 element array ok if data type char or byte, int twice large , take space.

maybe should consider more grunt. tell more , can suggest suitable. teensy 3.x arduino compatible. more power still, maybe consider raspberry pi zero, not arduino compatible.

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