Lightnews — Scholar-powered news

Reposted by Sune Lehmann

Sadamori Kojaku @skojaku.bsky.social · 6d

One of the time-consuming tasks in paper writing is to curate bibtex for references. So I automated bibtex curation with an Alfred app that fetches entries from dx.doi.org using DOI or title. It saves time, reduces errors, and maintains consistent LaTeX keys. github.com/skojaku/tobi...

GitHub - skojaku/tobibtex

Contribute to skojaku/tobibtex development by creating an account on GitHub.

github.com

4 6

Reposted by Sune Lehmann

NetSci 2026 @netsciconf.bsky.social · 8d

📌 Save the Date!

The flagship conference of the Network Science Society - 𝗡𝗲𝘁𝗦𝗰𝗶 𝟮𝟬𝟮𝟲 - is coming to Northeastern University’s Network Science Institute, 𝗝𝘂𝗻𝗲 𝟭-𝟱, 𝟮𝟬𝟮𝟲.
Prepare to share ideas, discoveries & challenges in network science.

Registration opens soon! 🔗 www.netsci2026.com

34 40

Sune Lehmann @sunelehmann.com · 16d

It was a ton of fun to play a small role in this project lead by the brilliant Marta Ewa Lech & @jonassjuul.bsky.social. A lot of drama & change in the world of music reflected in the song-dynamics of the Billboard Hot 100!

Jonas L Juul @jonassjuul.bsky.social · 16d

New paper out in EPJ Data Science!

We analyze 65 years of Billboard Hot 100 data to ask:

🎵Are songs moving differently up and down the chart nowadays?
📉 Are hits shorter-lived?
📈 Or do superstars dominate more than ever?

Paper: epjdatascience.springeropen.com/articles/10....
🧵 1/7

3 4

Reposted by Sune Lehmann

Jonas L Juul @jonassjuul.bsky.social · 16d

New paper out in EPJ Data Science!

We analyze 65 years of Billboard Hot 100 data to ask:

🎵Are songs moving differently up and down the chart nowadays?
📉 Are hits shorter-lived?
📈 Or do superstars dominate more than ever?

Paper: epjdatascience.springeropen.com/articles/10....
🧵 1/7

1 3 18

Sune Lehmann @sunelehmann.com · Sep 8

🎶 If you want to kiss the sky, better learn how to kneel
On your knees, boy

… She's the wave, she turns the tide
She sees the man inside the child

… It's all right, it's all right, it's all right
She moves in mysterious ways 🎶

(Unless you normalize using the pair distribution function)

Louis Boucherie @louisboucherie.com · Sep 1

* Decoupling geographical constraints from human mobility *

🌍🚶 How much of our movement is about human choice and how much is constrained by geography and the spatial layout of locations?

Our paper (out in Nature Human Behavior) gives you a practical way to tell:

www.nature.com/articles/s41...

1

Sune Lehmann @sunelehmann.com · Sep 4

Thanks!! (I’ve been angling for nomological clout since I was a young child. )

1

Reposted by Sune Lehmann

Nature Human Behaviour @nathumbehav.nature.com · Sep 1

In this article, Boucherie et al. apply physics-based models to the arrangement of locations to study how geography shapes human movement. They find an underlying pattern in how people choose to move, independent of geographical layout.

Decoupling geographical constraints from human mobility - Nature Human Behaviour

Boucherie et al. apply physics-based models to the arrangement of locations to study how geography shapes human movement. They find an underlying pattern in how people choose to move, independent of geographical layout.

www.nature.com

3 11

Sune Lehmann @sunelehmann.com · Sep 4

And if you want an easily accessible version of the paper, DTU did a nice writeup here: www.dtu.dk/english/news... with more detail than I could squeeze into these posts.

There is a hidden simplicity behind how people move

DTU scientists show that once you account for geographical restraints, there are consistent patterns behind human mobility.

www.dtu.dk

1

Sune Lehmann @sunelehmann.com · Sep 4

All of the brilliance is due to my fantastic co-authors @louisboucherie.com and Benjamin F. Maier! I was just happy to get to hang around while we were figuring out all these beautiful new insights into human mobility.

1 1

Sune Lehmann @sunelehmann.com · Sep 4

There's much more awesomeness in the paper:

We go deep on the pairwise distance distribution.

And along the way, we model the distribution of houses in Denmark using old-school statistical physics and then connect everything through considering the inter/intra city mobility.

A large and unusually complex figure from the paper.

1 1 1

Sune Lehmann @sunelehmann.com · Sep 4

The 1/x power-law spans the scales of meters to hundreds of km.

The way we unearth the power law is that in considering the raw mobility data (orange line), we account for the moves that are possible (blue line) encoded as the distribution of pairwise distances between locations.

Two distributions. One is orange and represents the distribution of empirical moves between houses in Denmark. The other is blue and represents the distribution of pairwise distances between houses in Denmark.

1 1

Sune Lehmann @sunelehmann.com · Sep 4

Super excited about our new paper on mobility that's out in Nature Human Behavior www.nature.com/articles/s41...

I love this paper for many reasons, but one is that we find beautiful 1/x power-law that spans 6 orders of magnitude hidden within the "ugly" distribution raw mobility data.

A very straight line on a loglog plot. So straight that even Aaron Clauset would call this a power-law

3 7 16

Reposted by Sune Lehmann

NERDS @nerdsitu.bsky.social · Sep 4

New NERDS publication on hitting the music charts
nerds.itu.dk/2025/09/04/n...

Changes in songs’ lifetimes. A The average (blue), median (orange), and the 20th percentile (green) of the lifespans of all songs over time. The dashed lines indicate some of music history’s most important technology launches. All three summary statistics increased until the 2000s and then started to drop. The median and the 20th percentile have fallen below 5, achieving the lowest values in the chart’s history. The drop in the last 2 years can be partially affected by the songs that have just entered the chart since their lifetimes are yet to be established.

3 6

Reposted by Sune Lehmann

Louis Boucherie @louisboucherie.com · Sep 3

🔊 More from our recent @nathumbehav.nature.com article from the Technical University of Denmark: Our study shows that behind the apparent complexity of human mobility lies a simple rule shaped by geography and distance.

🔗 www.dtu.dk/english/news...
DOI: 10.1038/s41562-025-02282-7

There is a hidden simplicity behind how people move

DTU scientists show that once you account for geographical restraints, there are consistent patterns behind human mobility.

www.dtu.dk

2 7

Reposted by Sune Lehmann

Louis Boucherie @louisboucherie.com · Sep 1

* Decoupling geographical constraints from human mobility *

🌍🚶 How much of our movement is about human choice and how much is constrained by geography and the spatial layout of locations?

Our paper (out in Nature Human Behavior) gives you a practical way to tell:

www.nature.com/articles/s41...

1 6 15

Reposted by Sune Lehmann

Joseph Fasano @josephfasano.bsky.social · Aug 4

For a Student Who Used AI to Write a Paper

19 480 1.7K

Sune Lehmann @sunelehmann.com · Jul 23

So good!

2

Reposted by Sune Lehmann

Martin Rosvall @mrosvall.bsky.social · Apr 17

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...

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 ...

www.umu.se

5 6

Sune Lehmann @sunelehmann.com · Apr 1

Image of an abstract with the following text

Abstract: A year ago, ChatGPT surprised the world with its extraordinary language generation capabilities. Chatbots have since become of the fastest adopted consumer product in history with investments in genAI forecasted to reach $12B this year. In this talk, I will first review the fast-evolvingliterature on the document-level membership inference task for LLMs: the methods proposed to detect--a posteriori--whether a specific piece of text was seen during training by an LLM and at least partially memorized, the distribution shift concerns, and some of the solutions proposed. I will then discuss the use of randomized controlled setups to causally study LLM memorization. In particular, Iwill discuss how randomized controlled setup have shed lights on the determinant of memorization and showed LLMs to have a mosaic memory. I will conclude the talks with same thoughts on the security and privacy challenges ahead when it comes to LLMs and the use of synthetically generated trap sequences for membership inference.

1

Sune Lehmann @sunelehmann.com · Apr 1

Speaker: Yves-Alexandre de Montjoye
Time: 8 Apr. 2025, 15:00-16:00
Place: SODAS Conference Room - 1.1.12, Øster-Farimagsgade 5
Title: LLM's unintended memories

sodas.ku.dk/events/llms-...

LLM's unintended memories

Join us for a talk by Yves-Alexandre de Montjoye on the unintended memories of LLM's on April 8!

sodas.ku.dk

1 1 6

Sune Lehmann @sunelehmann.com · Apr 1

People of Copenhagen:

On Tuesday April 8th, we have awesome privacy researcher @yvesalexandre.bsky.social visiting the group. Yves is a bold and creative scientist, and also former advisor to Marianne Vestager.

Yves will give a talk at SODAS at 3pm that's open to the public (details below)

1 1 3

Reposted by Sune Lehmann

Roberta Sinatra @robysinatra.bsky.social · Apr 1

Today is the (hard) deadline for the postdoctoral call listed below! Join us #postdoc #scienceofscience #AI #networkscience

Roberta Sinatra @robysinatra.bsky.social · Mar 4

🌍 Join us in Copenhagen - fantastic city for work-life balance and awesome science.

I am hiring PhD students & Postdocs in my group at SODAS Univ of Copenhagen to explore AI, network science & the science of science.

📍 Start: flex summer 2025
📌 Info&Apply: www.robertasinatra.com/2025/03/02/p...

2 5

Sune Lehmann @sunelehmann.com · Apr 1

Congratulations! Well deserved :)

3

Reposted by Sune Lehmann

Serge Belongie @serge.belongie.com · Mar 27

Job opening at DTU Compute & @aicentre.dk - Associate Professor or Tenure Track

Associate Professor or DTU Tenure Track Assistant Professor in AI - DTU Compute

Are you passionate about Human Centered AI and can you help build the next generations of AI systems within the Danish Pioneer Centre for AI? DTU Compute has an attractive group leader opening as Tenu...

efzu.fa.em2.oraclecloud.com

8 20

Reposted by Sune Lehmann

Copenhagen Center for Social Data Science (SODAS) @cphsodas.bsky.social · Mar 25

New Politiken op-ed (in 🇩🇰) by @adler-nissen.bsky.social, @sunelehmann.com, Morten Axel Pedersen and other colleagues. They talk about how AI can be used democratically, innovatively, justly and with the interests of Danish citizens in mind. Read on: politiken.dk/debat/kronik...

Forskere: Vi står over for en teknologisk revolution, og Danmark kan vise vejen

Med sine stærke traditioner for fællesskab og tillid kan Danmark vise, at ai både kan skabe værdi og gøre samfundet bedre.

politiken.dk

1 3