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liendata.bsky.social
Lien
@liendata.bsky.social
500 followers 860 following 230 posts
Data. Semiconductor. Process mining. Homemade memes. Occasional artist. Skills of a data engineer and education of a data scientist... but I enjoy working as an overqualified data analyst instead 🦄
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liendata.bsky.social
hehe, spotted a "TODO" in the documentation... Can't even blame them, I do it all the time 😂
Screenshot of eProcurementOntology documentation (link at end). The text "TODO: add defintion" is highlighted. https://docs.ted.europa.eu/EPO/latest/_attachments/html_reports/ePO/EARoot/EA1/EA2/EA102.htm
October 4, 2025 at 8:23 PM
liendata.bsky.social
What's awesome about building open source is that you don't have to worry about sales prospects. For example, using your favourite animal stacking poo cubes as the logo for a data preparation tool, is a totally valid option.

#databs
Drawing of a wombat with clean, simple lines. The gray wombat is sitting and stacking three rounded cubes in front of it. The cubes are brown. To the left of the wombat, in light brown, the letters of PyStack't are stacked a bit jumbly in three rows: p y - s t a - c k 't.
September 25, 2025 at 6:01 AM
liendata.bsky.social
How's your side project going? #databs #opensource
Drake No/Yes Meme. No: Improving PyStack't. Yes: Creating a cute logo. The logo in question shows a black-and-white drawing of a wombat with clean, simple lines. The wombat is sitting and stacking three rounded cubes in front of it. To the left of the wombat, in light grey, the letters of PyStack't are stacked a bit jumbly in three rows: py - sta - ck't.
September 23, 2025 at 9:41 PM
liendata.bsky.social
Mister Crabs (from Spongebob) lying in a pile of money. Caption reads "Software vendors after showing demo of AI going brrrrr to C-suite."
August 28, 2025 at 2:53 PM
liendata.bsky.social
Blub 🫧
Screenshot of draw a fish app after you let the fish swim. My fish is orange/red and has a cute black eye with a white highlight.
July 25, 2025 at 5:27 PM
liendata.bsky.social
This app allows me to relive my insect nerd childhood days and I'm loving it 😍

play.google.com/store/apps/d...
Grey-banded Mining Bee. (Kruiskruidzandbij in Dutch.) Little bee sitting on a yellow flower. Marmalade Hoverfly. (Snorzweefvlieg in Dutch.) Hoverflu with yellow, white and black stripes and big reddish eyes sitting on a blue flower. Empis livida. (Akkerdisteldansvlieg in Dutch.) Looks like a hybrid between a mosquito and a fly, sitting on a white flower. Common Carder Bumblebee. (Akkerhommel in Dutch). Close up of a bumblebee hanging upside down on small white flowers.
July 5, 2025 at 3:12 PM
liendata.bsky.social
You can always use this comic from Nathan W. Pyle? 😄
Four panel comic about 2 blue aliens on a science fair. First panel: Young being standing next to a poster says "I have attempted science" and teacher asks "Please explain". Second panel: Young being replies "I formed an idea and then discovered I was wrong". Third panel: teacher looks closely at the poster and remarks "there are numerous diagrams" to which young being replies "I was wrong in numerous ways". Fourth panel: Young being says "I produced a detailed tribute to my wrongness" to which teacher replies "That is science".
June 25, 2025 at 5:39 PM
liendata.bsky.social
Getting closer...
Screenshot of terminal output. 18-06-2025 19:27 Extracting and mapping data for issue #17289 done ...66.5% (about 37679.9s remaining) 18-06-2025 19:27 Starting intermediate save process... 18-06-2025 19:27 Saving object-centric event data extracted from pandas-dev/pandas to DuckDB database file ./pandas_all_20250617.duckdb, schema stackt. Overwriting schema 'stackt' Table object_types (4 records) done. Table object_attributes (15 records) done. Table objects (214020 records) done. Table object_attribute_values (643050 records) done. Table event_types (37 records) done. Table events (836399 records) done. Table event_attributes (37 records) done. Table event_attribute_values (251858 records) done. Table relation_qualifiers (7 records) done. Table event_to_object (1837081 records) done. Table object_to_object (50698 records) done. Table event_to_object_attribute_value (0 records) done. 18-06-2025 19:32 Extracting and mapping data for issue #17089 done ...66.8% (about 37327.3s remaining) 18-06-2025 19:36 Extracting and mapping data for issue #16941 done ...67.0% (about 37056.2s remaining) 18-06-2025 19:37 Extracting and mapping data for issue #16903 done ...67.1% (about 36988.2s remaining).
June 18, 2025 at 5:40 PM
liendata.bsky.social
And we're back in business 😄
Terminal output. Start extraction of object-centric event data from all issues of repository pandas-dev/pandas using GitHub REST API via PyGitHub library. Status updates will be displayed every 1% progress and every 5 minutes. While you wait, you can read about GitHub API rate limits here: https://docs.github.com/en/rest/using-the-rest-api/rate-limits-for-the-rest-api 17-06-2025 22:42 Starting data extraction for approximately 61672 issues ... 17-06-2025 22:42 Extracting and mapping data for issue #61672 done ...0.0% (about 78035.3s remaining) 17-06-2025 22:47 Extracting and mapping data for issue #61313 done ...0.4% (about 83959.7s remaining) 17-06-2025 22:52 Extracting and mapping data for issue #61045 done ...0.7% (about 85166.4s remaining) 17-06-2025 22:54 ⚠️ Skipping issue #60972 due to GitHub error: 404 {"message": "Not Found", "documentation_url": "https://docs.github.com/rest", "status": "404"} 17-06-2025 22:54 Starting intermediate save process... 17-06-2025 22:54 Saving object-centric event data extracted from pandas-dev/pandas to DuckDB database file ./pandas_all_20250617.duckdb, schema stackt. Overwriting schema 'stackt' Table object_types (4 records) done. Table object_attributes (15 records) done. Table objects (3012 records) done. Table object_attribute_values (8934 records) done. Table event_types (30 records) done. Table events (8423 records) done. Table event_attributes (30 records) done. Table event_attribute_values (2273 records) done. Table relation_qualifiers (7 records) done. Table event_to_object (19064 records) done. Table object_to_object (715 records) done. Table event_to_object_attribute_value (0 records) done. 17-06-2025 22:56 Extracting and mapping data for issue #60827 done ...1.0% (about 85049.9s remaining) 17-06-2025 22:57 Extracting and mapping data for issue #60791 done ...1.1% (about 84820.6s remaining).
June 17, 2025 at 8:59 PM
liendata.bsky.social
When you're 24 hours into an +- 30 hours stress-test data extraction and the GitHub API goes down, so it fails with a MaxRetryError 😭
Screenshot from githubstatus.com, showing Major Outage for API Requests.
June 17, 2025 at 8:06 PM
liendata.bsky.social
@twisteddoodles.bsky.social didn't share this one here yet... so I'm sharing a screen grab because it made me giggle out loud in this conference season #databs
Screenshot from Instagram post of twisteddoodles. Shows a nicely drawn sheep with a lanyard standing on a stylized conference floor (just some legs like she's talking to someone and a booth with 2 people in the background, drawn with simple light gray lines). Text reads "in the middle of the conference she suddenly realised she was in the wrong field.". Caption reads "But she still got the free pens".
June 14, 2025 at 9:35 AM
liendata.bsky.social
#databs
Young Anna from the movie Frozen standing at Elsa's door, hands clasped and hopeful face. Top text: Me going to our data architects like. Bottom text: "Do you wanna build a DuckLake?".
May 28, 2025 at 6:05 AM
liendata.bsky.social
PyStack't v0.0.3 is now live!

For all the curious #databs minds that want to browse through the event data of their favorite open-source GitHub projects... Happy exploring! 😘

For the #processmining community desperate for real-life OCED data... Happy researching! 😘

pypi.org/project/pyst...
May 20, 2025 at 9:25 PM
liendata.bsky.social
PyStack't is getting some cool new functionality soon!

#databs #processmining

github.com/LienBosmans/...
May 17, 2025 at 8:31 PM
liendata.bsky.social
More colors! Less mess! Honestly, this is going great 😍
Same app, but now there are a lot more colors (edges are also colored) and no more overlapping labels, and even the edges are behaving nicely and not crossing each other constantly.
May 4, 2025 at 8:18 PM
liendata.bsky.social
My graph visualization project train arrived at station "nice from afar, messed up from up close", which holds true for real processes too so I think it's on the right track #databs
Screenshot of in-browser Dash app hosted at http://127.0.0.1:8050/. The title reads "Interactive object-centric process visualizations". Below is a card with title "Life cycle of a GitHub issue" that shows a zoomed out graph visualization of multi-colored nodes connected by grey edges. Nodes are clustered in light-gray rectangles. Same app, but now the graph visualization is zoomed in. There are lots of overlapping edges and labels, making it seem messy and hard to see the overview.
May 3, 2025 at 10:59 PM
liendata.bsky.social
Building some cool shit! #databs

Or at least it will be cool... soon...ish?

Let's leave it at "I have good hopes that I will stick long enough with this attempt at creating interactive graph visualizations to create something fun that might even be interesting"
Screenshot of in-browser Dash app hosted at http://127.0.0.1:8050/. The title reads "My First App with a Graph". Below is a card with title "Graph Title 101" and a square with two circles connected by a straight line. The first circle is labelled "Node 1", the second "Node 2". At the bottom of the page are some buttons: "Errors", "Callbacks", "v3.0.4", "Server".
April 30, 2025 at 8:34 PM
liendata.bsky.social
#databs
Sunglass Doge Meme. Top text: When they ask to change something for a new edge case. Bottom text: But your code already covers it because this isn't your first data rodeo.
April 23, 2025 at 2:38 PM
liendata.bsky.social
Using AI to make coloring pages for the kids, because how would I otherwise find one of a "twinkling unicorn jumping over a tree stump with star shaped moss"
AI-generated coloring page of a twinkling unicorn jumping over a tree stump covered with star shaped moss.
April 16, 2025 at 10:38 AM
liendata.bsky.social
Sometimes I make art
Charcoal drawing of insect (Macrodactylus)
April 5, 2025 at 7:36 PM
liendata.bsky.social
Work in progress
Charcoal drawing of an insect. The body seems done, but only some rough sketches of the legs are visible. The drawing is taped to a white board that is set on a wooden easel. The easel is placed against a white wall on which a small painting hangs of a landscape with a pink cloud. Next to the easel is a blue chair that holds some art supplies like charcoal and tape.
March 31, 2025 at 7:07 PM
liendata.bsky.social
Today was the day I needed to fix a legacy PowerBI report that broke months ago when we switched query engines #databs
Gru's Plan Meme. Gru is standing next to a white flipchart explaining his big plan. The flipchart reads "Try to delete connection parameter." "Use error message to identify which tables still use the old data source." "Some tables use a hardcoded connection string" Gru is looking disappointed at his last flipchart reading "Some tables use a hardcoded connection string."
March 25, 2025 at 5:58 PM
liendata.bsky.social
TL;DR version of PyStack't docs
Meme of Patrick from SpongeBob explaining how to move stuff. get_github_log(). Get process data from GitHub repo. Store it in Stack't relational schema. Meme of Patrick from SpongeBob explaining how to move stuff. export_to_ocel2(). Take process data from Stack't relational schema. Export it to object-centric event log in OCEL 2.0 format.
March 10, 2025 at 2:00 PM
liendata.bsky.social
Today I created a #slitherlink puzzle for the first time! It was lots of fun ☺️

I started by drawing a single loop for the solution and progressively gave myself more hints until I could solve it.

If you print it, you can try to solve it yourself (not sure what's the difficulty level though 😅)
An unsolved slitherlink. Grid size is 10 by 18 cells.
January 25, 2025 at 8:28 PM
liendata.bsky.social
But how will you know which beer you're drinking if all the glasses look the same? Sincerely, a concerned Belgian
A wide variety of Belgian beers, which are each served in their own distinct glass.
January 10, 2025 at 4:59 PM