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> Heck, they've been doing machine learning since at least 2004, when they added Latent Semantic Analysis for junk mail filtering to the Mail app. LSA is a kno
by denzil_correa 9y ago
> Heck, they've been doing machine learning since at least 2004, when they added Latent Semantic Analysis for junk mail filtering to the Mail app.
LSA is a knowledge (text) representation technique not machine learning.
- jd20 9y agoFair point, I mentioned it because I was thinking they combined the LSA with some form of classifier that got trained as you marked messages as spam (or told it when it misclassified), I'm not sure what Apple's full implementation was though.
- denzil_correa 9y agoYup - it seems like they used Adaptive Latent Semantic Analysis as a dimensionality reduction technique to represent knowledge[ 0]. LSA helped them use the filtering technique on the device itself as it was not heavy. [0] https://www.youtube.com/watch?v=7N8b3NZSJoY&t=1m21s https://www.youtube.com/watch?v=7N8b3NZSJoY&t=1m21s