Kai Zhu
@kai-zzzzzz.bsky.social
Pinned
Kai Zhu
@kai-zzzzzz.bsky.social
· Aug 4
📣 Thrilled to announce our new paper, "Monetizing Platforms: An Empirical Analysis of Supply and Demand Responses to Entry Costs in Two-Sided Markets," is now published in Management Science!
When a digital platform starts charging for access, who wins and who loses? 🧵👇
When a digital platform starts charging for access, who wins and who loses? 🧵👇
Reposted by Kai Zhu
What happens to ecosystem diversity and #platform match quality after a platform introduces paid #discovery tools (e.g., Apple's search result ads)? @kai-zzzzzz.bsky.social and co-authors share insights from #Goodreads introduction of paid book giveaways.
platformpapers.substack.com/p/the-price-...
platformpapers.substack.com/p/the-price-...
The Price of Platform Participation
Goodreads’ introduction of paid giveaways reveals how charging for discovery affects ecosystem diversity and match quality.
platformpapers.substack.com
November 20, 2025 at 1:00 PM
What happens to ecosystem diversity and #platform match quality after a platform introduces paid #discovery tools (e.g., Apple's search result ads)? @kai-zzzzzz.bsky.social and co-authors share insights from #Goodreads introduction of paid book giveaways.
platformpapers.substack.com/p/the-price-...
platformpapers.substack.com/p/the-price-...
Reposted by Kai Zhu
🧪 Women are represented as younger than men across occupations/social roles in data from Google,Wikipedia,IMDB, Flickr,YouTube and LLMs.The bias is strongest for occupations with high status/earnings.ChatGPT perpetuates this bias when generating and evaluating resumes. www.nature.com/articles/s41...
Age and gender distortion in online media and large language models - Nature
Stereotypes of age-related gender bias are socially distorted, as evidenced by the age gap in the representations of women and men across various media and algorithms, despite no systematic age differences in the workforce.
www.nature.com
October 8, 2025 at 4:53 PM
🧪 Women are represented as younger than men across occupations/social roles in data from Google,Wikipedia,IMDB, Flickr,YouTube and LLMs.The bias is strongest for occupations with high status/earnings.ChatGPT perpetuates this bias when generating and evaluating resumes. www.nature.com/articles/s41...
Translation technology is incredible — it’s the #1 AI use case, and I’ve believed that for years.
The demand is huge, and the tools are almost there. With better interactive UI design, the upside for society will be significant.
www.nytimes.com/2025/09/18/t...
The demand is huge, and the tools are almost there. With better interactive UI design, the upside for society will be significant.
www.nytimes.com/2025/09/18/t...
The New AirPods Can Translate Languages in Your Ears. This Is Profound.
www.nytimes.com
September 22, 2025 at 9:23 AM
Translation technology is incredible — it’s the #1 AI use case, and I’ve believed that for years.
The demand is huge, and the tools are almost there. With better interactive UI design, the upside for society will be significant.
www.nytimes.com/2025/09/18/t...
The demand is huge, and the tools are almost there. With better interactive UI design, the upside for society will be significant.
www.nytimes.com/2025/09/18/t...
Reposted by Kai Zhu
This @beijingpalmer.bsky.social post reminded me I have been meaning to update @pewresearch.org's estimate of total newspaper newsroom jobs - which was 30,820 as of 2020
Using BLS OEWS data (w/ same methodology as Pew) the 2024 number is 29,260 - down another 5%
www.pewresearch.org/chart/sotnm-...
Using BLS OEWS data (w/ same methodology as Pew) the 2024 number is 29,260 - down another 5%
www.pewresearch.org/chart/sotnm-...
August 31, 2025 at 6:45 PM
This @beijingpalmer.bsky.social post reminded me I have been meaning to update @pewresearch.org's estimate of total newspaper newsroom jobs - which was 30,820 as of 2020
Using BLS OEWS data (w/ same methodology as Pew) the 2024 number is 29,260 - down another 5%
www.pewresearch.org/chart/sotnm-...
Using BLS OEWS data (w/ same methodology as Pew) the 2024 number is 29,260 - down another 5%
www.pewresearch.org/chart/sotnm-...
Reposted by Kai Zhu
Call for papers, 4th UK Workshop on Digital Economics, London 28 November 2025: competitionpolicy.ac.uk/events/4th-w... This is always a great event
Centre for Competition Policy
High quality independent research into competition policy and regulation
competitionpolicy.ac.uk
July 25, 2025 at 9:43 AM
Call for papers, 4th UK Workshop on Digital Economics, London 28 November 2025: competitionpolicy.ac.uk/events/4th-w... This is always a great event
Reposted by Kai Zhu
I wrote an article about linguistic bias and the internet for the BBC, based on a paper @ze.vin, @ethanz.bsky.social, and I wrote comparing four language-specific samples of YouTube. www.bbc.com/future/artic...
How language is hiding the real internet from you
Most of the internet is out of your reach, but the barrier isn't just algorithms. In another language, the same platforms turn into whole other worlds.
www.bbc.com
August 13, 2025 at 4:56 PM
I wrote an article about linguistic bias and the internet for the BBC, based on a paper @ze.vin, @ethanz.bsky.social, and I wrote comparing four language-specific samples of YouTube. www.bbc.com/future/artic...
Reposted by Kai Zhu
Want a good starting point for learning good principles of Dataviz?
I'd highly recommend @andrew.heiss.phd course--Data Visualization with R.
Reading materials, slides, lecture videos, examples, code, etc. are all posted for free on his website.
I'd highly recommend @andrew.heiss.phd course--Data Visualization with R.
Reading materials, slides, lecture videos, examples, code, etc. are all posted for free on his website.
August 12, 2025 at 4:18 PM
Want a good starting point for learning good principles of Dataviz?
I'd highly recommend @andrew.heiss.phd course--Data Visualization with R.
Reading materials, slides, lecture videos, examples, code, etc. are all posted for free on his website.
I'd highly recommend @andrew.heiss.phd course--Data Visualization with R.
Reading materials, slides, lecture videos, examples, code, etc. are all posted for free on his website.
Reposted by Kai Zhu
Got around to pushing all my @cuboulder.info Web Data Science @jupyter.org notebooks to @github.com
Enjoy! github.com/cuinfoscienc...
Enjoy! github.com/cuinfoscienc...
March 27, 2025 at 3:45 AM
Got around to pushing all my @cuboulder.info Web Data Science @jupyter.org notebooks to @github.com
Enjoy! github.com/cuinfoscienc...
Enjoy! github.com/cuinfoscienc...
Reposted by Kai Zhu
There have been a number of recent articles on statistical power in quantitative political science. This is something that I think deserves more attention and discussion. A short thread of the articles I have read. 🧵
July 23, 2025 at 6:58 AM
There have been a number of recent articles on statistical power in quantitative political science. This is something that I think deserves more attention and discussion. A short thread of the articles I have read. 🧵
Reposted by Kai Zhu
Perplexity is repeatedly modifying their user agent and changing IPs and ASNs to hide their crawling activity, in direct conflict with explicit no-crawl preferences expressed by websites. blog.cloudflare.com/perplexity-i...
Perplexity is using stealth, undeclared crawlers to evade website no-crawl directives
Perplexity is repeatedly modifying their user agent and changing IPs and ASNs to hide their crawling activity, in direct conflict with explicit no-crawl preferences expressed by websites.
blog.cloudflare.com
August 4, 2025 at 1:31 PM
Perplexity is repeatedly modifying their user agent and changing IPs and ASNs to hide their crawling activity, in direct conflict with explicit no-crawl preferences expressed by websites. blog.cloudflare.com/perplexity-i...
📣 Thrilled to announce our new paper, "Monetizing Platforms: An Empirical Analysis of Supply and Demand Responses to Entry Costs in Two-Sided Markets," is now published in Management Science!
When a digital platform starts charging for access, who wins and who loses? 🧵👇
When a digital platform starts charging for access, who wins and who loses? 🧵👇
August 4, 2025 at 10:10 AM
📣 Thrilled to announce our new paper, "Monetizing Platforms: An Empirical Analysis of Supply and Demand Responses to Entry Costs in Two-Sided Markets," is now published in Management Science!
When a digital platform starts charging for access, who wins and who loses? 🧵👇
When a digital platform starts charging for access, who wins and who loses? 🧵👇
Reposted by Kai Zhu
Inspiring PDW on using sensitivity analysis in empirical management research. My contribution is to present the sensemakr package by Cinelli & Hazlett (2020) for observational designs. Thanks a lot to the organizers for putting this fantastic session together. #AOM2025
July 26, 2025 at 7:52 AM
Inspiring PDW on using sensitivity analysis in empirical management research. My contribution is to present the sensemakr package by Cinelli & Hazlett (2020) for observational designs. Thanks a lot to the organizers for putting this fantastic session together. #AOM2025
Reposted by Kai Zhu
Where the cuts are going to be felt the most.
www.nytimes.com/interactive/...
www.nytimes.com/interactive/...
Where Congress’s Cuts Threaten Access to PBS and NPR
The loss of federal funding threatens scores of public TV and radio stations across the United States.
www.nytimes.com
July 19, 2025 at 3:44 PM
Where the cuts are going to be felt the most.
www.nytimes.com/interactive/...
www.nytimes.com/interactive/...
Reposted by Kai Zhu
24/ An excellent recent survey revisits the theoretical literature on herds & cascades It notes that cascades cause poor information aggregation, lead to fragile mass behaviors, and remain central to understanding social learning. Those 1992 papers launched a vast literature 😎
July 6, 2025 at 4:02 AM
24/ An excellent recent survey revisits the theoretical literature on herds & cascades It notes that cascades cause poor information aggregation, lead to fragile mass behaviors, and remain central to understanding social learning. Those 1992 papers launched a vast literature 😎
Reposted by Kai Zhu
Academia will form these little pockets -- people whose theorizing is outrageous & supported by methods outdated since the 90s -- but once it reaches a critical size those people just review each others papers & grants, form societies, hand out awards etc, like a self-contained parallel society.
June 3, 2025 at 5:31 AM
Academia will form these little pockets -- people whose theorizing is outrageous & supported by methods outdated since the 90s -- but once it reaches a critical size those people just review each others papers & grants, form societies, hand out awards etc, like a self-contained parallel society.
Reposted by Kai Zhu
its crazy how dominant germany was in science (especially chemistry) in the 19th century, it was basically the international language for scientists, people came from all over the world to train at heidelberg etc, and then....
There are 2 previous historical cases of countries destroying their science and universities, crippling them for decades: Lysenkoism in the USSR and Nazi Germany. The Trump administration will be the 3rd.
It's not just budgets but research, institutions, expertise, and training the next generation.
It's not just budgets but research, institutions, expertise, and training the next generation.
May 31, 2025 at 10:39 AM
its crazy how dominant germany was in science (especially chemistry) in the 19th century, it was basically the international language for scientists, people came from all over the world to train at heidelberg etc, and then....
Reposted by Kai Zhu
Wikipedia may seem like an unlikely site of resistance, but in an era of escalating censorship, disinformation, & erosion of public trust, Wikipedia is a model for collective governance led by next generation of cultural workers, @alexmar.bsky.social reports: prismreports.org/2025/05/12/w...
How museums are using Wikipedia to archive marginalized art
As public archival institutions fade and the state rewrites curricula, the next generation of cultural workers is stepping up
prismreports.org
May 12, 2025 at 11:18 PM
Wikipedia may seem like an unlikely site of resistance, but in an era of escalating censorship, disinformation, & erosion of public trust, Wikipedia is a model for collective governance led by next generation of cultural workers, @alexmar.bsky.social reports: prismreports.org/2025/05/12/w...
Reposted by Kai Zhu
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
Reposted by Kai Zhu
Have you ever asked yourself about the overall extent of TikTok? Here some numbers from "Just Another Hour on TikTok" - Great compliment to @bendavidsteel.bsky.social for this data collection effort!
w/ @miriamschirmer.bsky.social & Derek Ruths
arxiv.org/abs/2504.13279
w/ @miriamschirmer.bsky.social & Derek Ruths
arxiv.org/abs/2504.13279
April 21, 2025 at 5:09 PM
Have you ever asked yourself about the overall extent of TikTok? Here some numbers from "Just Another Hour on TikTok" - Great compliment to @bendavidsteel.bsky.social for this data collection effort!
w/ @miriamschirmer.bsky.social & Derek Ruths
arxiv.org/abs/2504.13279
w/ @miriamschirmer.bsky.social & Derek Ruths
arxiv.org/abs/2504.13279
Reposted by Kai Zhu
Climate Terminology Does Not Matter
Across tens of thousands of participants in two large-scale experiments, we found that labeling climate change in different ways had no effect on their stated willingness to act.
jayvanbavellab.substack.com/p/climate-te...
via @dgoldwert.bsky.social
Across tens of thousands of participants in two large-scale experiments, we found that labeling climate change in different ways had no effect on their stated willingness to act.
jayvanbavellab.substack.com/p/climate-te...
via @dgoldwert.bsky.social
Climate Terminology Does Not Matter
Our new paper finds that swapping out one climate term for another does not meaningfully change people’s stated commitment to fight climate change
jayvanbavellab.substack.com
April 7, 2025 at 5:46 PM
Climate Terminology Does Not Matter
Across tens of thousands of participants in two large-scale experiments, we found that labeling climate change in different ways had no effect on their stated willingness to act.
jayvanbavellab.substack.com/p/climate-te...
via @dgoldwert.bsky.social
Across tens of thousands of participants in two large-scale experiments, we found that labeling climate change in different ways had no effect on their stated willingness to act.
jayvanbavellab.substack.com/p/climate-te...
via @dgoldwert.bsky.social
Reposted by Kai Zhu
Wow!
Three scholars at Columbia, Michigan, & Maryland just introduced a measure of the partisan leanings of employers in the U.S.
The data is constructed by linking voter registrations to online worker profiles.
VRscores capture the political affiliations of 21.8M workers across 2.6M employers.
Three scholars at Columbia, Michigan, & Maryland just introduced a measure of the partisan leanings of employers in the U.S.
The data is constructed by linking voter registrations to online worker profiles.
VRscores capture the political affiliations of 21.8M workers across 2.6M employers.
April 6, 2025 at 3:25 PM
Wow!
Three scholars at Columbia, Michigan, & Maryland just introduced a measure of the partisan leanings of employers in the U.S.
The data is constructed by linking voter registrations to online worker profiles.
VRscores capture the political affiliations of 21.8M workers across 2.6M employers.
Three scholars at Columbia, Michigan, & Maryland just introduced a measure of the partisan leanings of employers in the U.S.
The data is constructed by linking voter registrations to online worker profiles.
VRscores capture the political affiliations of 21.8M workers across 2.6M employers.
Reposted by Kai Zhu
Awesome post by @molly.wiki on the tensions of free knowledge production and commons in the face of extractive technologies like AI. www.citationneeded.news/free-and-ope...
“Wait, not like that”: Free and open access in the age of generative AI
The real threat isn't AI using open knowledge — it's AI companies killing the projects that make knowledge free
www.citationneeded.news
March 14, 2025 at 6:35 PM
Awesome post by @molly.wiki on the tensions of free knowledge production and commons in the face of extractive technologies like AI. www.citationneeded.news/free-and-ope...
Excited to share our revised working paper on Machine-assisted Content Creation on Peer Production Platforms—we have made significant changes and additions!
Our study explores how AI-powered translation reshapes multilingual content creation on platforms like Wikipedia.
Our study explores how AI-powered translation reshapes multilingual content creation on platforms like Wikipedia.
February 24, 2025 at 6:03 PM
Excited to share our revised working paper on Machine-assisted Content Creation on Peer Production Platforms—we have made significant changes and additions!
Our study explores how AI-powered translation reshapes multilingual content creation on platforms like Wikipedia.
Our study explores how AI-powered translation reshapes multilingual content creation on platforms like Wikipedia.
Reposted by Kai Zhu
Bocconi Marketing is hiring a rookie professor of consumer behavior. Apply by Feb 28. jobmarket.unibocconi.eu?id=747
January 28, 2025 at 8:42 AM
Bocconi Marketing is hiring a rookie professor of consumer behavior. Apply by Feb 28. jobmarket.unibocconi.eu?id=747
Reposted by Kai Zhu
New paper with amazing Eve Coslon-Sihra, "Does Inequality Affect the Needs of the Poor?" now published in the JEEA!
We show inequality redefines needs at the bottom of the pyramid, deepening the calorie consumption puzzle and worsening malnutrition.
A thread below ⬇️
We show inequality redefines needs at the bottom of the pyramid, deepening the calorie consumption puzzle and worsening malnutrition.
A thread below ⬇️
Forthcoming article by @clement-s-bellet.bsky.social and Eve Colson-Sihra "Does Inequality Affect the Needs of the Poor? @eeanews.bsky.social
doi.org/10.1093/jeea...
doi.org/10.1093/jeea...
Does Inequality Affect the Needs of the Poor?*
Abstract. We investigate how inequality affects what is considered most necessary to purchase. Combining detailed consumption surveys in India with an inst
doi.org
January 23, 2025 at 9:47 AM
New paper with amazing Eve Coslon-Sihra, "Does Inequality Affect the Needs of the Poor?" now published in the JEEA!
We show inequality redefines needs at the bottom of the pyramid, deepening the calorie consumption puzzle and worsening malnutrition.
A thread below ⬇️
We show inequality redefines needs at the bottom of the pyramid, deepening the calorie consumption puzzle and worsening malnutrition.
A thread below ⬇️