This is long and deep article that talks about the recurrent neural networks which is very popular among traders for increasing performance This will result in sentiment analysis which is more quantified for better projections. There is lots of math here as well.
In Machine Learning, you’re always dealing with trade-offs. With more complex models some of the trade-offs are (a) increasing performance, but reducing model interpretability or (b) increasing performance, but increasing training time.
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NOTE I now post my TRADING ALERTS into my personal FACEBOOK ACCOUNT and TWITTER. Don't worry as I don't post stupid cat videos or what I eat!