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>I'd be curious to hear what people think is state of the art of this kind of problem?

I would assume Amazon's product suggestion would be SotA for reccomending a book based off of another. It is a recommondation system and while it uses semantic search there are many more ranking signals it uses.

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The problem with systems like that is they're going to be optimized for making Amazon the most money, not necessarily what's best for the user (unless the two happen to coincide.)

Money is a proxy for user value and it is in Amazon's best interest for the customer to continually act upon these recommendations. If Amazon fails to deliver user value customers will be less willing to continue paying.

lol. lmao.

> Money is a proxy for user value and it is in Amazon's best interest for the customer to continually act upon these recommendations. If Amazon fails to deliver user value customers will be less willing to continue paying.

You're talking about the same Amazon that will blindly give me recommendations for other products that fill exactly the same niche as the one I just bought.

"Oh, you just bought a generator? You probably need a second one too, right?"

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