Ivo
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velitchkov.eu
Ivo
@velitchkov.eu
Independent consultant, author, trainer.
Interested in social systems and knowledge graphs.

newsletter: https://www.linkandth.ink
website: https://velitchkov.eu
I have reviewed many #SHACL shape graphs over the last few years. There are some error patterns as well as exotic errors. And recently, I've noticed some very different patterns of LLM-generated errors. 🧵
November 13, 2025 at 4:01 PM
Circular economy, redefined.
November 4, 2025 at 8:01 AM
Systemic.
November 1, 2025 at 12:51 PM
"To me, ping pong just looks like two perverts spanking a ghost."
—Aisling Bea

#Halloween
October 31, 2025 at 4:31 PM
Reminds me of
October 24, 2025 at 5:07 PM
Interesting. Action/perception is a false split, cognitive science shows, but from the perspective of agency, it still holds.
October 23, 2025 at 4:15 PM
October 16, 2025 at 9:30 PM
Back from tennis where I had to sweep the court with this cute contraption. It needs a good name and I'm not happy with my first ideas which are Broomzilla and The Sweeping Committee.
So I need your help.
October 14, 2025 at 3:23 PM
The S-D balance...
essentialbalances.com
October 8, 2025 at 9:23 PM
One more source of technical debt besides apps-data tight coupling.
October 6, 2025 at 8:42 AM
The vomit bag in the "literature only" slot is, I guess, in case you strongly dislike the literature.
September 28, 2025 at 5:52 PM
The restrooms are traditionally indicated but it was nice to see this put in front of both of them.
September 27, 2025 at 1:33 PM
After 4 hours in MUNCH musium in Oslo yesterday, I didn't take a single photo (not that they're were no nice things) but today in the National museum, I found one that he created in his 20s, which I liked a lot.
September 27, 2025 at 12:16 PM
Nice.
Next step: bigger horns.
September 23, 2025 at 9:53 AM
My explanation is "so you don't put the key in your pocket and forget to return it".

What is yours?
September 10, 2025 at 10:32 AM
Haven't been to Budapest in a while. It has changed a lot.
Darker, noisier; I heard a lot of Russian spoken in the streets (often loud), and I saw a lot of this
September 6, 2025 at 8:36 PM
For all focaccia lovers
September 2, 2025 at 10:44 AM
The icon set I use on my phone was not updated and X still appears with the cheerful Twitter logo to remind me every day of the good pre-Musk years, and that life is precarious.
August 19, 2025 at 3:29 PM
LLMs mix surprisingly good with surprisingly confabulated answers. If the latter is more genuinely noisy, it can be a source of serendipity and fix the damage of the search engines.
August 11, 2025 at 3:35 PM
The three laws of thought that shape Western thinking (identity, excluded middle, and non-contradiction) say the same thing, existence, in three different ways (but leave other things unsaid) #LoF
August 7, 2025 at 4:45 PM
I haven't been to Dalmatia in over a decade. Keeps impressing.
July 27, 2025 at 3:53 PM
Cotton in the air.
July 23, 2025 at 8:46 PM
Now I realize that the banner of my profile here on Bluesky is a historical photo. Recently, an unprecedented storm hit #Rovinj, uprooting or snapping many large, old trees, including most of those visible in the photo.

Here is one such tree they had to cut to prevent it from falling over people.
July 21, 2025 at 1:31 PM
As you have probably guessed, this is a bat. Looks like an arrowhead, but the flying direction is the opposite.
July 13, 2025 at 7:16 PM
"Despite complaints from employers from all sectors that they do not have enough workers and there are no candidates, the number of job vacancies is growing."
July 6, 2025 at 2:40 PM