Fast Topic Matching

Brave New Geek, Dec 30, 2016
Commentary by Stephen Downes
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I've always had in mind the idea to allow OLDaily subscribers to pick the topics they're interested in, and send them only that. I haven't, for two reasons. This article addresses the first: actually makng it work for thousands of topics and/or thousands of subscribers is a bear. The obvious method - called the "naive hashmap" - takes too long to work (I've tried it). But there are certainly speedier solutions. But the second reason I haven't done it is even harder: I want OLDaily readers to be surprised. Nobody would have selected this topic, for example, but aren't you glad you learned about it? Via Vedalgo.

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