New ask Hacker News story: Ask HN: With FAANG turnover-why don't we know about actual recommendation algos?

Ask HN: With FAANG turnover-why don't we know about actual recommendation algos?
2 by RicoElectrico | 13 comments on Hacker News.
Recommendation algorithms of Facebook, Google, YouTube are still a black box to us. We don't know what exact features are the input, how much are they weighted and so on. But the turnover of software engineers is quite substantial, they come and go from these companies. How is it even possible to keep this stuff secret, then? For most folks outside of the above companies I can understand why know-how would be kept secret after people are gone from the employer: it's quite boring and of little interest to anyone, really. No benefit or thrill if you divulge anything.

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