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Author of the article here: thanks for re-posting this! The article seems to be still relevant to many even 4 years later, which surprises me, given how quickly everything is changing in the field.

However, I personally am now focused (and bullish) on DNN-based semantic search. Having built several search experiences based on it I'm convinced it is the future.

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Thanks so much for writing this article and pointing readers to the resources. I am planning to build my own personal search engine to reduce SEO spam in my searches, and the resources and concepts here were very helpful.

Regarding DNN-based semantic search, what would you say are the top notable works that one should dive into? What search experiences have you built that you feel was strongly enhanced by DNN-based methods?

thanks for the great article could you write a followup about recent changes since 2017 and explain more about DNN-based methods.

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