Lightnews — Scholar-powered news

Reposted by Hannah Li

Dean Eckles @eckles.bsky.social · Aug 28

I am teaching a PhD seminar this fall which attempts to put a decision-theoretic lens (or lenses) on research design.

So e.g., statistical decision theory, eliciting beliefs & preferences, and rational benchmarks.

Here's a draft syllabus docs.google.com/document/d/1...

What's missing?

10 8 63

Hannah Li @hannahli.bsky.social · May 6

Joint work with Liang (Charles) Lyu, James Siderius, @dacemoglumit.bsky.social, Dan Huttenlocher, and Asu Ozdaglar

1

Hannah Li @hannahli.bsky.social · May 6

We see a similar effect in edits, although not statistically significant. Very important to keep monitoring in the future, as platforms like Wiki serve as important info repositories (and training data for future LLMs)

1 1

Hannah Li @hannahli.bsky.social · May 6

This is in contrast to prior work that sees no significant change to Wikipedia articles *as a whole*, after the launch of ChatGPT. This masks selective changes in consumption patterns.

1

Hannah Li @hannahli.bsky.social · May 6

Just out in WWW last week! 📜Our work on substitution patterns between Wikipedia and ChatGPT. We find *heterogeneous* impacts, where Wiki articles that are similar to ChatGPT outputs see a greater drop in views than dissimilar articles:

arxiv.org/abs/2503.00757

Wikipedia Contributions in the Wake of ChatGPT

How has Wikipedia activity changed for articles with content similar to ChatGPT following its introduction? We estimate the impact using differences-in-differences models, with dissimilar Wikipedia ar...

arxiv.org

3 3 31

Hannah Li @hannahli.bsky.social · Apr 25

I am influenced. Buying a copy too!

2

Hannah Li @hannahli.bsky.social · Apr 16

Curious to see what analyses you do! I've been tracking my habits and moods on Daylio for the last 2 years for no reason but to one day do some data analysis on myself... maybe that day will come soon

2

Hannah Li @hannahli.bsky.social · Apr 16

Come work with people like @dholtz.bsky.social, Nicola Rosaia, and me :)

1 1

Hannah Li @hannahli.bsky.social · Apr 16

📣 Please repost 📣 We are hiring a staff Research Associate (pre-doc) at Columbia DRO!

This is a great opportunity if you want to work on online platforms, urban economics, experiment design, or impacts of AI.

Deadline to apply is May 15. For more info: business.columbia.edu/faculty/divi...

1 2 5

Hannah Li @hannahli.bsky.social · Mar 11

Terrifying how much control the Trump administration has on our education system...

3

Reposted by Hannah Li

Nikhil Garg @nkgarg.bsky.social · Mar 10

*Please repost* @sjgreenwood.bsky.social and I just launched a new personalized feed (*please pin*) that we hope will become a "must use" for #academicsky. The feed shows posts about papers filtered by *your* follower network. It's become my default Bluesky experience bsky.app/profile/pape...

24 290 510

Hannah Li @hannahli.bsky.social · Feb 18

I definitely believe these trends are happening, but I can't figure out how they would reliably measure this? Their method relies on classifying which texts are AI generated, and so the classifier could just be flagging texts with low diversity

1 3

Hannah Li @hannahli.bsky.social · Feb 16

Wow now THIS is some cool data viz. Insane looking at Manhattan and seeing the Billionaire's Row ultra high rises casting 20 block long shadows across Central Park...

John Holbein @johnholbein1.bsky.social · Feb 15

This app is so cool!

ShadeMap generates shadow maps by calculating the sun's position for a given location and time of year.

It then traces a path from each map pixel toward the sun; if this path intersects an object like a building, mountain, or tree, the pixel is marked as shaded.

2

Hannah Li @hannahli.bsky.social · Jan 9

Yes to evaluating the *outcomes* of these systems rather than as a standalone algorithm! This is something that's been bothering me for a while about ML assisted decisions

1

Hannah Li @hannahli.bsky.social · Dec 30

"Life can get very exciting upon realising that a problem has more {axes/limits/...} than was initially apparent." <-- Maybe this says something about how exciting my life is, but I related to this...

Sam Power @spmontecarlo.bsky.social · Dec 30

Finally compiled and refined this a bit; do take a look if you're curious! A more TeX'd version is attached in the screenshots.

hackmd.io/@sp-monte-ca...
'Some Intuition Boosters'

Reposted by Hannah Li

Khoa @khoavuumn.bsky.social · Dec 8

Real footage of a synthetic control model

14 120 650

Hannah Li @hannahli.bsky.social · Dec 4

Hmm what are you suggesting to divide by?

1

Hannah Li @hannahli.bsky.social · Dec 4

Cursor has been a lifesaver for me!!

2

Hannah Li @hannahli.bsky.social · Dec 3

neat - wonder if there's some way to disentangle how these starter packs have shaped the resulting follower-following graph, compared to if we only had organic search

Ketika Garg @ketikagarg.bsky.social · Dec 1

1st post on bsky - about bsky! I was fascinated with academic starter packs and made an interactive network to see academic communities and how they connect - a map of knowledge! link to an interactive & searchable network: ketikagarg.github.io/blueSkyAcade...

1 1 9

Hannah Li @hannahli.bsky.social · Nov 25

Coolest thing I've seen in a minute: hijacking mosquitoes to spread the malaria *vaccine* when they bite people

www.nature.com/articles/d41...

This malaria vaccine is delivered by a mosquito bite

Bites from insects infected with modified malaria parasites boosted immunity and stopped people from contracting the disease.

www.nature.com

8

Hannah Li @hannahli.bsky.social · Nov 17

Would love to be added to this! :)

1

Hannah Li @hannahli.bsky.social · Nov 17

Excited for the dialogue and the research community that this site is going to create!

Emily Tucker @emilyltucker.bsky.social · Nov 8

New starter pack if you're looking for the #orms community on here: go.bsky.app/SvBND16

Also if you have recommendations of people to add, feel free to send them my way.

4

Reposted by Hannah Li

Catherine Breslin @catherinebreslin.bsky.social · Nov 15

ICYMI a starter pack to fill your feed with awesome women in AI go.bsky.app/LaGDpqg

20 41 83

Hannah Li @hannahli.bsky.social · Nov 15

Can you add me as well? Thanks!

1 1