Pinned toot is your home if you know:

\textit{idf} = - \log \frac{n_t}{N}

and... everyone else!

Pinned toot

Dear all,

For now, I will keep the site closed for registrations; but everyone can independently invite people to join using the following link to generate an invite:

If you know someone who wants to join this instance, then please do give them an invite!

Consider the instance open for those who know anyone on

"Sense of community" and an initial seed of some 40 IR researchers should be enough to keep those spammers out of here and still grow the club!

Pinned toot

Computer scientist 👨‍🏫 with main focus on Information Retrieval 📄

Also interested in Data Science / Big Data 💾

In the previous millennium :mastodon: a PhD on Multimedia Databases 🎥 (Yes that was a respectable research topic once upon a time pre-birdsite!)

is my academic home.

Entrepreneur: co-founder of ( admin.

Loves indie music: follow me at @arjenpdevries if you are interested in gigs, events, etc.

Pinned toot
Pinned toot

Inaugural toots on using a photo of lunch with Nick Belkin after attending the now Dr. Hugo Huurdeman defense.

See also:

"Is there a working group talking about vocabulary or interop with other federated networks (#ActivityPub/#XMPP)?"

Matthew Hodgson of @matrix's answer about cooperation among #federation protocol development

Learned about first here
5 years ago from's talk about
the Inter Planetary File System and the Permanent Web
in fact building a
"Permanent Memory for Humanity"

Another new music trial: a more stable and more reliable list (on spotify) with indie music released last week that has gained some traction.

Enjoy and let me know what you think!

Naomi Klein in The Intercept: "... human rights advocates are warning that India is on the knife edge of terrible violence. [...] Through it all, the giants of Silicon Valley have stayed conspicuously silent, their famed devotion to free expression, as well as their newfound commitment to battling hate speech and conspiracy theories, is, in India, nowhere to be found.

India Targets Climate Activists With the Help of Big Tech

A Shazam client in Linux to identify songs:

Tried it from Flatpak, and it works!

📣 New year, new blog post: I fell into the rabbit hole that is monochrome image dithering. I wrote down everything I learned! 👨‍🎓

(… and wrote a small demo that dithers an image with all these different dithering algorithms.)


An Exploration of JSON Interoperability Vulnerabilities 


In response to ongoing internet restrictions / censorship in Myanmar, in MY is now on

Huge props to who proposed it, & coordinated w/ native speakers.

Epic implementation effort by & Kelson of!


How Google search changed the appearance if its advertisements over the year:

Show more

The "unofficial" Information Retrieval Mastodon Instance.

Goal: Make a viable and valuable social space for anyone working in Information Retrieval and related scientific research.

Everyone welcome but expect some level of geekiness on the instance and federated timelines.