Sarah Rajtmajer
@srajtmajer.bsky.social
Associate Prof @PennState Tech, Data, Ethics
Thoughts on tech/AI, privacy, of course.
NLP, computational social science, science of science, social media
But also maths, music, ballet, nature, mental health.
https://www.rajtmajerlab.net
Thoughts on tech/AI, privacy, of course.
NLP, computational social science, science of science, social media
But also maths, music, ballet, nature, mental health.
https://www.rajtmajerlab.net
@vrandecic.bsky.social founder of Wikidata shares the history of Wikipedia and Semantic Web. @iswc-conf.bsky.social
This example from early days a nod to his beautiful HR
This example from early days a nod to his beautiful HR
November 4, 2025 at 1:06 AM
@vrandecic.bsky.social founder of Wikidata shares the history of Wikipedia and Semantic Web. @iswc-conf.bsky.social
This example from early days a nod to his beautiful HR
This example from early days a nod to his beautiful HR
State College, PA. World class athletes on every field, on every corner. @pennstatewsoc
October 26, 2025 at 7:56 PM
State College, PA. World class athletes on every field, on every corner. @pennstatewsoc
Yesterday we celebrated the great Lee Giles. Yes, his h-index is 121. He was part of the “lunatic fringe” doing CNNs way back and stood up CiteSeer, the OG Google Scholar.
But his legacy is people. 38 PhD students, countless postdocs, etc. and the beautiful, important part he played in their lives.
But his legacy is people. 38 PhD students, countless postdocs, etc. and the beautiful, important part he played in their lives.
October 25, 2025 at 7:54 PM
Yesterday we celebrated the great Lee Giles. Yes, his h-index is 121. He was part of the “lunatic fringe” doing CNNs way back and stood up CiteSeer, the OG Google Scholar.
But his legacy is people. 38 PhD students, countless postdocs, etc. and the beautiful, important part he played in their lives.
But his legacy is people. 38 PhD students, countless postdocs, etc. and the beautiful, important part he played in their lives.
Early days of computer-supported cooperative work. 😂😍 @acm-cscw.bsky.social
October 20, 2025 at 7:54 AM
Early days of computer-supported cooperative work. 😂😍 @acm-cscw.bsky.social
20 Cliff St., Staten Island, NY
One bedroom, tucked under the Verrazzano Bridge.
If you don’t remember where you come from, you cannot get where you need to go. #blueskies
One bedroom, tucked under the Verrazzano Bridge.
If you don’t remember where you come from, you cannot get where you need to go. #blueskies
October 18, 2025 at 4:12 PM
20 Cliff St., Staten Island, NY
One bedroom, tucked under the Verrazzano Bridge.
If you don’t remember where you come from, you cannot get where you need to go. #blueskies
One bedroom, tucked under the Verrazzano Bridge.
If you don’t remember where you come from, you cannot get where you need to go. #blueskies
Dear god how I love Jenny Slate.
~The man was getting irritated because I guess I was making a face and rolling my eyes, but what was hard about that was that my head was dangling upside down and so my eyeballs were, to be fair, rolling around.~
~The man was getting irritated because I guess I was making a face and rolling my eyes, but what was hard about that was that my head was dangling upside down and so my eyeballs were, to be fair, rolling around.~
October 16, 2025 at 8:44 PM
Dear god how I love Jenny Slate.
~The man was getting irritated because I guess I was making a face and rolling my eyes, but what was hard about that was that my head was dangling upside down and so my eyeballs were, to be fair, rolling around.~
~The man was getting irritated because I guess I was making a face and rolling my eyes, but what was hard about that was that my head was dangling upside down and so my eyeballs were, to be fair, rolling around.~
If only they could find a map of Croatia to stand up behind her.
October 8, 2025 at 12:57 PM
If only they could find a map of Croatia to stand up behind her.
It is not just children and other people who know when they are being looked at and can feel instantly the quality and intent of a gaze. Animals know it as well and sense how it is that we are seeing them, with what qualities of mind and heart, whether in fear or in gladness.
—on being seen
—on being seen
September 22, 2025 at 2:38 AM
It is not just children and other people who know when they are being looked at and can feel instantly the quality and intent of a gaze. Animals know it as well and sense how it is that we are seeing them, with what qualities of mind and heart, whether in fear or in gladness.
—on being seen
—on being seen
September 17, 2025 at 10:11 PM
Stravinsky for ballet and chamber orchestra with our Nittany Ballet 🩰 ❤️ #dansesconcertante
September 14, 2025 at 9:12 PM
Stravinsky for ballet and chamber orchestra with our Nittany Ballet 🩰 ❤️ #dansesconcertante
Whatever chaos on the ground, Mozart is a North Star 💫
September 10, 2025 at 11:21 PM
Whatever chaos on the ground, Mozart is a North Star 💫
The White House Instagram account is just memes at this point. WTH?!
September 7, 2025 at 4:14 PM
The White House Instagram account is just memes at this point. WTH?!
The truth-teller is the most powerful person in the room. Her courage is the light.
To every girl who has been coerced, intimidated, silenced, felt doubt, shame, these brave women are heroes. #believewomen
To every girl who has been coerced, intimidated, silenced, felt doubt, shame, these brave women are heroes. #believewomen
September 3, 2025 at 9:15 PM
The truth-teller is the most powerful person in the room. Her courage is the light.
To every girl who has been coerced, intimidated, silenced, felt doubt, shame, these brave women are heroes. #believewomen
To every girl who has been coerced, intimidated, silenced, felt doubt, shame, these brave women are heroes. #believewomen
“The sea is like music. It has all the dreams of the soul within itself and sounds them over.” —Carl Jung
The summer is coming to a close, but I carry it in my heart all year.
📸island Vis, Croatia
The summer is coming to a close, but I carry it in my heart all year.
📸island Vis, Croatia
August 29, 2025 at 9:36 PM
“The sea is like music. It has all the dreams of the soul within itself and sounds them over.” —Carl Jung
The summer is coming to a close, but I carry it in my heart all year.
📸island Vis, Croatia
The summer is coming to a close, but I carry it in my heart all year.
📸island Vis, Croatia
🚨New dataset🚨 **taxpayer-funded, because elected officials' social media communications *should be* a matter of public record.
Tracks 28.8K U.S. officials (2020–24): metadata, 5.7M X + 450K FB posts, weekly volume, engagement, term trends...
Researchers, concerned constituents--use as you like!
Tracks 28.8K U.S. officials (2020–24): metadata, 5.7M X + 450K FB posts, weekly volume, engagement, term trends...
Researchers, concerned constituents--use as you like!
August 24, 2025 at 5:13 PM
🚨New dataset🚨 **taxpayer-funded, because elected officials' social media communications *should be* a matter of public record.
Tracks 28.8K U.S. officials (2020–24): metadata, 5.7M X + 450K FB posts, weekly volume, engagement, term trends...
Researchers, concerned constituents--use as you like!
Tracks 28.8K U.S. officials (2020–24): metadata, 5.7M X + 450K FB posts, weekly volume, engagement, term trends...
Researchers, concerned constituents--use as you like!
Brother and sister texting each other while sitting side by side… I try to be strict with them about screen time, but we parents are fighting such an uphill battle against addictive devices. World, please help 😭
August 23, 2025 at 4:37 PM
Brother and sister texting each other while sitting side by side… I try to be strict with them about screen time, but we parents are fighting such an uphill battle against addictive devices. World, please help 😭
Warm welcome to our new cohort of PhD students 🥰 #pennstate #ist
August 21, 2025 at 4:26 PM
Warm welcome to our new cohort of PhD students 🥰 #pennstate #ist
“…the whole surface of this country would be channelled for those nerves which are to diffuse, with the speed of thought, a knowledge of all that is occurring...” -Samuel Morse
If he saw us now.
From the lovely children’s book (for adults): www.shelfeditions.com/products/the...
If he saw us now.
From the lovely children’s book (for adults): www.shelfeditions.com/products/the...
August 19, 2025 at 2:43 AM
“…the whole surface of this country would be channelled for those nerves which are to diffuse, with the speed of thought, a knowledge of all that is occurring...” -Samuel Morse
If he saw us now.
From the lovely children’s book (for adults): www.shelfeditions.com/products/the...
If he saw us now.
From the lovely children’s book (for adults): www.shelfeditions.com/products/the...
My favorite way to start the weekend, with an exhale and this beautiful creature.
August 16, 2025 at 2:34 PM
My favorite way to start the weekend, with an exhale and this beautiful creature.
In contrast to what’s going on in DC with the treatment of homeless people, I’m reminded of this moment from June in Zagreb. I walked by a state-sponsored elder care home. Random weekday evening, folks singing together in the basement. 🤍
August 15, 2025 at 12:56 PM
In contrast to what’s going on in DC with the treatment of homeless people, I’m reminded of this moment from June in Zagreb. I walked by a state-sponsored elder care home. Random weekday evening, folks singing together in the basement. 🤍
Vive la résistance
August 13, 2025 at 3:09 AM
Vive la résistance
This day, August 12th, 1958. “A great day in Harlem”
Count Basie, Dizzie Gillespie, Thelonious Monk, Charles Mingus…
inspiration ✨🎺🐐
Count Basie, Dizzie Gillespie, Thelonious Monk, Charles Mingus…
inspiration ✨🎺🐐
August 13, 2025 at 3:04 AM
This day, August 12th, 1958. “A great day in Harlem”
Count Basie, Dizzie Gillespie, Thelonious Monk, Charles Mingus…
inspiration ✨🎺🐐
Count Basie, Dizzie Gillespie, Thelonious Monk, Charles Mingus…
inspiration ✨🎺🐐
Our findings detail how participants trust (or not) a (visible) deepfake image alert notification. We vary the risk the image poses and the performance of the AI detection/alert system.
August 5, 2025 at 7:54 PM
Our findings detail how participants trust (or not) a (visible) deepfake image alert notification. We vary the risk the image poses and the performance of the AI detection/alert system.