Mark Harwood (@elasticmark) header
Mark Harwood (@elasticmark) profile picture

Mark Harwood

@elasticmark

Ex @elastic. Search guy. Currently working on https://teapawt.net/t.co/1wMVJKWZvd

m.youtube.com/channel/UC_Ci-rzrOoJsId8TgTs-8_g/videos
Joined January 2014
  • Tweets2.4K
  • Following359
  • Followers1.4K
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Photo by Mark Harwood (@elasticmark)Photo by Mark Harwood (@elasticmark)Photo by Mark Harwood (@elasticmark)Photo by Mark Harwood (@elasticmark)Photo by Mark Harwood (@elasticmark)Photo by Mark Harwood (@elasticmark)Photo by Mark Harwood (@elasticmark)Photo by Mark Harwood (@elasticmark)
My elasticon talk on qry.codes is up - Binary vectors and in-browser clustering
Benjamin Trent (@benwtrent) profile pictureBenjamin Trent@benwtrent13 Feb 2025
I really enjoyed this talk by @elasticmark . He is back at finding crazy & interesting ways to explore data (I guess he never stopped). Clustering with binary vectors & vector search with @elastic youtube.com/watch?v=sJU_8mtz…
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The rough charm of the Annecy bowl
Image from Mark Harwood (@elasticmark)
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Geohashes as an open alternative to what3words for skate spots
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Testing the 2nd use of a sk8tag on X (this should link to the first - it’s about the same skatepark) 📍 #sk8gcptxmr · Watford
Image from Mark Harwood (@elasticmark)
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Testing the first use of a sk8tag on X: #sk8gcptxmr Watford. The geohash-based skatepark tagging system: sk8tags.com/about/sk8tag
Image from Mark Harwood (@elasticmark)
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Idea: Geohash-tags When geohashes are used as hashtags in social media they offer: 1) a solid means of linking posts 2) a decodable location @instagram - help me fix your platform for skaters.
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Launching my open data project sk8tags.com today. Like a Wikipedia for skateparks, with trip planning. Biggest park list in the world, built on @elastic
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Some things just feel nice.
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The @openstreetmap interactive guide for new editors is the best software on-boarding tool I’ve ever experienced. Hats off. 🫡
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A guitar made from an old skate deck - latest project.
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Imagining Radiohead covering the Severance theme tune - new track. youtu.be/IK1VDW8lk0A
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Tantrum tariff.
The White House (@WhiteHouse) profile pictureThe White House
@WhiteHouseFeb 20
🚨 President Donald J. Trump imposes a 10% global tariff on all countries.
Image from The White House (@WhiteHouse)
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How do I get rid of the tab group switcher in iOS safari? It wastes space and does the same thing as the button on the bottom of the page. 😡
Image from Mark Harwood (@elasticmark)
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The best way is to kick off @elastic Elastic{ON} London is with the @elastic_london meetup the night before. There are great talks on significant terms by @elasticmark and building a #genai game with @Microsoft and #elasticsearch. Register via the link 👇. See you there! 👋
Elastic London (@elastic_london) profile pictureElastic London@elastic_londonJan 16
Happy New Year! Join us for our next meetup on Wed Feb 25th ahead of Elastic{ON} London. We'll have talks from @elasticmark on significant terms and @Microsoft on building #genai games with @Microsoft and #elasticsearch. Register: meetup.com/london-elastic-fa… See you there!
Significant Terms and GenAI Games with Elastic and Microsoft, Wed, Feb 25, 2026, 6:00 PM | Meetup

Significant Terms and GenAI Games with Elastic and Microsoft, Wed, Feb 25, 2026, 6:00 PM | Meetup

Join us **the night before Elastic{ON} London** for an exclusive meetup, a perfect warm-up to the big day ahead! This is your chance to connect with the Elastic community,

meetup.com
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Mark Harwood retweeted
AndorSearch (@AndOrSearch) profile picture
AndorSearch@AndOrSearch16 Dec 2025
Ice: weather, hockey, glaciers… or deportations? How do you tell a search engine which one you mean? youtu.be/xPIBKd7kRQw
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At this stage it’s no longer shocking how awful the man is. The shock is that so many Americans still choose to go along with it.
Aaron Rupar (@atrupar) profile pictureAaron Rupar
@atrupar15 Dec 2025
this is one of the most psychotic things Trump has ever posted
Image from Aaron Rupar (@atrupar)
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The new stem separation in @Ableton 12.3 is pretty good. Made this using a separated Robert Palmer classic vocal. youtu.be/fd9zynlNpws
Johnny And Mary (Robert Palmer cover)

Johnny And Mary (Robert Palmer cover)

Vocals isolated using the new Ableton Live stem separation feature

youtube.com
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TIL
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My web app for clustering and reading the latest news. news.inperspective.com
Image from Mark Harwood (@elasticmark)
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Today’s news, dynamically clustered, labelled then visualised using @carrotsearch FoamTree
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I've released an open-source version of the significant terms algorithms for use in browsers today. Play with the demo: significance.andorsearch.co/ Get the code: npmjs.com/package/@andorsear… Watch the explainer: youtube.com/watch?v=Te_N8qve…
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