Working on personalized feeds ... there are nearly 700,000 relationships that differ by > 10% from our current "global" point of view.
I got it to around 70k relationships that are >= 10% stronger than the global relationships which seems more accurate ... by tuning a few "hyperparameters."
It's difficult to account for weaker relationships because they could be weaker due to a lack of history or be caused by disagreement. I think that deserves specific treatment when I start adding more relationship dimensions.
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