Hannah Li
@hannahli.bsky.social
Assistant Prof at Columbia || Studying data science and its interactions with human behavior || Applications in education, healthcare, and online platforms.
https://hannahql.github.io/
https://hannahql.github.io/
Reposted by Hannah Li
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?
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?
August 28, 2025 at 4:22 PM
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?
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?
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
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
May 6, 2025 at 7:04 PM
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
arxiv.org/abs/2503.00757
📣 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...
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...
April 16, 2025 at 6:52 PM
📣 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...
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...
Reposted by Hannah Li
*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...
March 10, 2025 at 6:14 PM
*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...
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...
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.
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.
February 16, 2025 at 3:46 PM
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...
"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...
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'
hackmd.io/@sp-monte-ca...
'Some Intuition Boosters'
December 30, 2024 at 10:01 PM
"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...
Reposted by Hannah Li
Real footage of a synthetic control model
December 8, 2024 at 4:46 AM
Real footage of a synthetic control model
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
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...
December 3, 2024 at 3:47 PM
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
Coolest thing I've seen in a minute: hijacking mosquitoes to spread the malaria *vaccine* when they bite people
www.nature.com/articles/d41...
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
November 25, 2024 at 2:58 PM
Coolest thing I've seen in a minute: hijacking mosquitoes to spread the malaria *vaccine* when they bite people
www.nature.com/articles/d41...
www.nature.com/articles/d41...
Excited for the dialogue and the research community that this site is going to create!
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.
Also if you have recommendations of people to add, feel free to send them my way.
November 17, 2024 at 5:24 PM
Excited for the dialogue and the research community that this site is going to create!
Reposted by Hannah Li
ICYMI a starter pack to fill your feed with awesome women in AI go.bsky.app/LaGDpqg
November 15, 2024 at 10:39 PM
ICYMI a starter pack to fill your feed with awesome women in AI go.bsky.app/LaGDpqg