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I always assumed were just fed news headlines and historical stock data to make their decision to buy or sell.
But recently I have found out that neural networks have a bad time handling big sets of data.
So what kind of data is fed into these programs nowadays?

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    "neural networks have a bad time handling big sets of data" Can you clarify what the exact claim you heard was? Big feature sets? Big training sets? – pip install frisbee Nov 5 '19 at 17:19
  • Well big inputs exponentially increase the amount of neurons you need. You can push a lot of individual datasets through the network of course, but the datasets should be small to get results – user2741831 Nov 5 '19 at 17:41
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    @user2741831 nn's deal with huge datasets all the time. you seem to be vaguely hinting at the curse of dimensionality but all algos suffer when you have a large p (features) without a large n (rows) of data – eps Nov 5 '19 at 18:46

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