Anomaly detection algorithm

I also have this question that I want answered.

  1. I looked at the links in the article, but most of them only generally explain what that value is, not detailed algorithms or calculations. Book link I can't read because I don't have enough budget to buy it. Do you have any documentation to help me solve this problem? Thank :grinning:
  2. In the reply, I saw a link to this book that seemed free, but when I accessed it, it couldn't be found " * Register for free e-Book: Digital book download: Machine Learning with the Elastic Stack - Second Edition "

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