Can we infer citywide traffic speeds without sensors or proprietary data?

In our #research, we explore an environment-driven approach to #traffic speed classification using #OpenStreetMap road context and Street View Imagery. By focusing on speed classes, the framework supports spatial completion across an entire urban network, including data-sparse areas.

Tested on #Berlin with OSM data quality assessed via the ohsome dashboard.

👉 https://heigit.org/new-paper-estimating-road-speed-classes-integrating-openstreetmap-and-street-view-imagery-for-missing-data-imputation/

#opendata #GIS

Anna's Archive backed up Spotify. They got 99.9% of metadata, and 300TB of music representing 86 million tracks - original 160kbps OGG for tracks with popularity>0, and re-encoded 75kbps for popularity=0. absolutely wild project.

the metadata in particular is a hugely useful data source. MusicBrainz catalogues 5 million unique ISRCs (like ISBNs but for music releases), whereas this archive has a whopping 186 million.

https://annas-archive.li/blog/backing-up-spotify.html

We tracked like 17 million train arrivals last year to see where delays happen, and this is the result 🗺️

Find out the best and worst stations, routes and times of day in our 2025 Wrapped overview: https://chuuchuu.com/2025wrapped

(on that note, we have a new website so check that out too)

When the study confirms intuition:

"We find that the number of papers cited at least as well as those appearing in high-impact factor journals vastly exceeds the number of papers published in such venues."

https://journals.plos.org/plosbiology/article?id=10.1371/journal.pbio.3003532

Decades on, academic journals are still useless as indicators of much of anything.

#publishing #academicchatter

How Is Public Space Shared in Your Neighborhood? 🚗🌳🛝
Ever wondered how much of your neighborhood’s public space is taken up by car parking and how that compares to green and play areas?

This interactive map lets you explore exactly that. Recently updated, it visualizes how public space is distributed between cars, greenery, and playgrounds across ALL of Berlin, offering insight into how the city allocates its shared space.

👇 Explore the map below
https://www.hanshack.com/parking/