Arjen P. de Vries is a user on You can follow them or interact with them if you have an account anywhere in the fediverse.

Arjen P. de Vries

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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!

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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.

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Knowledge frees humanity.

Thank you, corpus of Visual Metaphores!

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

See also:

PhD students (and supervisors), we extended the deadline for the FDIA 2018 - Future Directions in Information Access Symposium. New deadline is August 5, 2018. Please have a look at our CfP:

Out now - IJDL Volume 19, Issue 2-3, September 2018

Focused Issue on Bibliometric-enhanced Information Retrieval and Natural Language Processing for Digital Libraries

CfP: Workshop on Ethics, Privacy, Transparency and Bias in Information Retrieval, organised by IR Group of @InfoSchoolSheff


Decentralized Identifiers (DIDs) are a new type of identifier for verifiable, "self-sovereign" digital identity. DIDs are fully under the control of the DID subject, independent from any centralized registry, identity provider, or certificate authority. DIDs are URLs that relate a DID subject to means for trustable interactions with that subject. DIDs resolve to DID Documents — simple documents that describe how to use that specific DID.

I think the idea that a new Mastodon user is supposed to pick an instance based on affinity/interest is the number one thing that prevents people from joining. I think there needs to be a retooling of the messaging to make it about trust.

People don't join email services because of affinity. They do because they trust. They trust Google will be around for a long time. Or that hushmail won't sell their data. Or that Hotmail is easy to use. Etc etc.

You can now challenge someone to game of #chess over toots! 💪

It's actually a standalone server in the #fediverse, implementing #activitypub all by itself. 😃

#2028 "Complex Numbers" Show more

Which brought me to a huge list of "useless" uses of shell commands I use all the time 😅

Gimme that award!!

UNIX cmd `cat` can gain speed using #linux kernel's "splice" function

File under "nice to know" :-)

@hiemstra TAC has a task in systematic review for toxicology, that should help on the other side too

Call for participation: LWDA 2018, the joint conference of the German Computer Science Society SIGs on Information Retrieval, Knowledge Management, Machine Learning, Business Intelligence and Databases, will take place August 22-24, 2018 in Mannheim, Germany. It also hosts our 2018 Information Retrieval workshop, organised by the German Information Retrieval Special Interest Group.

I'm a computer scientist with a main focus on all things Information Retrieval in research as well as industry. I'm senior lecturer at the University of Bedfordshire in Luton, UK (some might know the airport), trying not to be too distracted by academic administration and the 'joys' the looming Brexit brings with it. In my work I'm aiming to bring together cognitive/user and system-oriented models and have this weird idea that quantum probabilities might help here.

Golden oldie:

Too many wrongly characterize the debate as "security versus privacy." The real choice is liberty versus control.

Association for Computing Machinery (ACM) have updated their Code of and Professional .