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Posts by Jari Saramäki

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Our CS building has received wonderful new works of art! These are student works from Aalto University’s interdisciplinary course ‘Crystal Flowers in Halls of Mirrors: Mathematics Meets Art and Architecture’, previously exhibited at Heureka as part of the Fibrations exhibition.

3 months ago 8 1 0 0
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🫵 Ready to tackle the world’s most complex challenges?
The Complexity Science Hub is looking for #PhD candidates eager to apply large-scale data analysis, quantitative models, and complexity science to shed light on pressing global issues.

📅 Apply by 11 November 2025
ℹ️ csh.ac.at/education/gr...

8 months ago 6 4 0 1

Yes, LABEL YOUR AXES

8 months ago 2 0 0 0

4 postdoc positions in complex systems at IFISC, Palma de Mallorca. Call open until 20/10/25, but positions will be filled starting immediately. If interested, please apply now. Candidates must be EU citizens.

10 months ago 3 3 0 0

Sort of global (through an app), but quite unreliable and bound to change without warning

10 months ago 0 0 0 0

Compared to this trip, that sonification is far too orderly and organized. The beginning was more Zappa than Kraftwerk

10 months ago 4 0 0 0

It did, but the shortest path required 4 trains instead of 2: trains just dropped passengers at random Dutch stations on the way and told us to wait for the next one

10 months ago 0 0 1 0

Solution: my cognitive limits prevent me from taking a route involving 4 German regional trains and computing alternatives should any or those connections fail -> waiting for the shortest path to materialize.

10 months ago 0 0 1 0

Time-respecting path problem: getting by train to Düsseldorf. Your first train is cancelled. Should you wait for a direct connection (to be cancelled with probability p) or pick a route with many hops (p again per hop, but increasing number of alternatives). There must be a DAG for this #NetSci2025

10 months ago 14 1 3 0

If you're already at @netsciconf.bsky.social and you're wondering what that graph is doing on your badge, here's the reason! We will have a lightning talk on wednesday to explain the rules before the first coffee break, don't miss it!

10 months ago 8 4 0 0
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DAGSHOP’25 — A WORKSHOP ON DIRECTED ACYCLIC GRAPHS - Dagshop — a NetSci'25 satellite DAGSHOP — A Workshop on directed acyclic graphs Time: June 2nd, 8:30-12:30, Location: Faculty of Arts and Social Sciences, Grote Gracht 76, hall 0.07 SCHEDULE Session 1: Chair Mikko Kivelä8:30 — 9:10 ...

Hi dagshop.xyz participants: the entrance is through Grote Gracht 90 (no-one knew this until a few minutes ago). We are on the ground floor left from the entrance (there is no sign) @netsci2025

10 months ago 1 0 0 0
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A Blue Start: A large-scale pairwise and higher-order social network dataset Large-scale networks have been instrumental in shaping the way that we think about how individuals interact with one another, developing key insights in mathematical epidemiology, computational social...

New paper out! "A Blue Start: A large-scale pairwise and higher-order social network dataset" in collaboration with @cetaceanneeded.bsky.social, Ilya Amburg, @diesagar.bsky.social, and @foucaultwelles.bsky.social. Paper at arxiv.org/abs/2505.11608 and dataset at socialmediaarchive.org/record/78

10 months ago 17 4 1 3
Logo for the DAGshop satellite

Logo for the DAGshop satellite

DAGshop is almost here — less than a week to go! If you’re at NetSci, come explore the connections between temporal networks, causality, spacetime, quantum gravity, and more. dagshop.xyz

10 months ago 5 1 0 0

Join us today! 🔬🎤🙋

#MártonKarsai of @weareceu.bsky.social on
Socioeconomic patterns and their dynamics in social networks and language

@cudanlab.bsky.social
2025-05-12 16:00-18:00 (Tallinn time)

Zoom & details:
cudan.tlu.ee/events/2025-...

#CulturalDataAnalytics #Complexity #NetSci #CompSocSci

11 months ago 5 5 0 0

Tieteellisen kirjoittamisen aloituspaketti #tiedetaivas

11 months ago 0 0 0 0

Minut nimitettiin jäseneksi Helsingin yliopiston tiedesäätiön valtuuskuntaan 3-vuotiskaudelle. Tiedesäätiö edistää ja tukee nuorten tieteenharjoittajien tutkimustyötä Helsingin yliopistossa. Olen nimityksestä todella iloinen, sillä tiede ja alma materini merkitsee minulle paljon.

11 months ago 20 1 6 0

Sama. En tiedä olisiko liikaa toivottu, että kolmesta arvioijasta edes yhdellä olisi edes yksi julkaisu hakemuksen tieteenalalta?

11 months ago 3 0 1 0
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IceLab Camp Part of the Stress Response Modeling Research School, IceLab Camp is a four-day off-site PhD course that prepares its participants to create new inter- or multidisciplinary research by first teaching ...

Registration is now open for IceLab Camp – a four-day off-site PhD course designed to train participants in asking research questions, laying the foundation for new multidisciplinary collaborations. www.umu.se/en/icelab/ca...

1 year ago 7 5 0 2

Something got broken in my coding setup (several things were deprecated) and I had to ask ChatGPT for help. I complained to it that I feel old, and got this as the answer: "That’s not 'old' — that’s veteran-level :-)" This will be my new motto I think.

1 year ago 10 1 0 0
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Cover for the track Damage (All Undone)

Cover for the track Damage (All Undone)

In other news, here is some new music with me producing and playing bass: music.youtube.com/playlist?lis...

1 year ago 5 0 0 0

The deadline for applying to our PhD position in GeoAI & LLMs approaches soon! Apply by next Sunday 2nd March to our exciting PhD position! 🌐 💡 See more details below.

1 year ago 4 6 0 0
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Essay time: AI and science’s happy ending I’ve been a bit disappointed with the debate about the future use of AI in science. Either it has been short-sighted: “Wow, let’s try this thing we’ve always been doing, but…

I channeled my inner Marvin Minsky to give a different perspective on AI science. It ended up being about how our lazy attitude toward our language stops science from its (utopian-level) full potential … and stuff.
petterhol.me/2025/02/09/e...

1 year ago 18 4 0 0

Yes, and sometimes it’s good to let your subconsciousness do the work. Maybe I’ll write more about this on some occasion. But at least to me, the best ideas (including RQs and hypotheses) come when I am not actively looking for them. Reading books is slow, and slow is good!

1 year ago 1 0 1 0
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How to choose a research question? Choosing which problems to work on is perhaps the hardest and most crucial part of science. It is also an invisible and underrated part.

How to choose a research question?

Choosing which problems to work on is perhaps the hardest and most crucial part of science. It is also an invisible and underrated part.

1 year ago 16 3 1 0
DAGSHOP’25 — A WORKSHOP ON DIRECTED ACYCLIC GRAPHS - Dagshop — a NetSci'25 satellite DAGSHOP — A Workshop on directed acyclic graphs Directed Acyclic Graphs (DAGs) appear in many contexts in network science, from citation networks and pedigrees to temporal-network event graphs and rep...

We're organizing a NetSci'25 satellite workshop on Directed Acyclic Graphs — if you're working on, e.g., citation graphs, pedigrees, causality, temporal-network event graphs, network representations of spacetime, or any other areas where DAGs play a role, please contribute! www.dagshop.xyz

1 year ago 15 15 0 0
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Here's a quick recap of the NetSci 2025 speakers announced so far:

@lindadouw.bsky.social,
@jsaramak.bsky.social,
@zdeborova.bsky.social,
Iza Romanowska,
Sonia Kefi,
Michael Macy,
@manlius.bsky.social,
Huijuan Wang.

#NetSci2025

1 year ago 15 9 0 1

That is a tragically missed opportunity indeed

1 year ago 2 0 0 0

My LaTeX compiler duly and understandably complained about the \textbff{} command I entered, and now I am wondering whether I've accidentally invented some new term for computational social scientists working on smartphone ego-nets

1 year ago 19 0 2 0

The worst thing about writing grant applications is that they make you think about all the great stuff you could be working on if you wouldn’t need to write grant applications

1 year ago 92 11 1 2
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📢 NetSci 2025 Speaker announcement:

Jari Saramäki, Full Professor at the Department of Computer Science, Aalto University

"Networks in Time and Space"
#NetSci2025 @jsaramak.bsky.social

1 year ago 24 7 0 0