102 citations · 323 across the 41 of their papers we have counts for
14 papers · 1 filter
Causally estimating the effect of YouTube's recommender system using counterfactual bots
Homa Hosseinmardi, Amir Ghasemian, Miguel Rivera-Lanas +3
In recent years, critics of online platforms have raised concerns about the ability of recommendation algorithms to amplify problematic content, with potentially radicalizing conse…
Orphan Articles: The Dark Matter of Wikipedia
Akhil Arora, Robert West, Martin Gerlach
With 60M articles in more than 300 language versions, Wikipedia is the largest platform for open and freely accessible knowledge. While the available content has been growing conti…
Biased Bytes: On the Validity of Estimating Food Consumption from Digital Traces
Kristina Gligorić, Irena Đorđević, Robert West
Given that measuring food consumption at a population scale is a challenging task, researchers have begun to explore digital traces (e.g., from social media or from food-tracking a…
Anticipated versus Actual Effects of Platform Design Change: A Case Study of Twitter's Character Limit
Kristina Gligorić, Justyna Częstochowska, Ashton Anderson +1
The design of online platforms is both critically important and challenging, as any changes may lead to unintended consequences, and it can be hard to predict how users will react.…
Population-scale dietary interests during the COVID-19 pandemic
Kristina Gligoric, Arnaud Chiolero, Emre Kıcıman +2
The SARS-CoV-2 virus has altered people's lives around the world. Here we document population-wide shifts in dietary interests in 18 countries in 2020, as revealed through time ser…
Political Polarization in Online News Consumption
Kiran Garimella, Tim Smith, Rebecca Weiss +1
Political polarization appears to be on the rise, as measured by voting behavior, general affect towards opposing partisans and their parties, and contents posted and consumed onli…
Evolution of Retweet Rates in Twitter User Careers: Analysis and Model
Kiran Garimella, Robert West
We study the evolution of the number of retweets received by Twitter users over the course of their "careers" on the platform. We find that on average the number of retweets receiv…
Postmortem memory of public figures in news and social media
Robert West, Jure Leskovec, Christopher Potts
Deceased public figures are often said to live on in collective memory. We quantify this phenomenon by tracking mentions of 2,362 public figures in English-language online news and…
Formation of Social Ties Influences Food Choice: A Campus-Wide Longitudinal Study
Kristina Gligorić, Ryen W. White, Emre Kıcıman +3
Nutrition is a key determinant of long-term health, and social influence has long been theorized to be a key determinant of nutrition. It has been difficult to quantify the postula…
YouNiverse: Large-Scale Channel and Video Metadata from English-Speaking YouTube
Manoel Horta Ribeiro, Robert West
YouTube plays a key role in entertaining and informing people around the globe. However, studying the platform is difficult due to the lack of randomly sampled data and of systemat…
Human biases in body measurement estimation
Kirill Martynov, Kiran Garimella, Robert West
Body measurements, including weight and height, are key indicators of health. Being able to visually assess body measurements reliably is a step towards increased awareness of over…
Adoption of Twitter's New Length Limit: Is 280 the New 140?
Kristina Gligorić, Ashton Anderson, Robert West
In November 2017, Twitter doubled the maximum allowed tweet length from 140 to 280 characters, a drastic switch on one of the world's most influential social media platforms. In th…
Experts and authorities receive disproportionate attention on Twitter during the COVID-19 crisis
Kristina Gligorić, Manoel Horta Ribeiro, Martin Müller +5
Timely access to accurate information is crucial during the COVID-19 pandemic. Prompted by key stakeholders' cautioning against an "infodemic", we study information sharing on Twit…
Calibration of Google Trends Time Series
Robert West
Google Trends is a tool that allows researchers to analyze the popularity of Google search queries across time and space. In a single request, users can obtain time series for up t…