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Opinion dynamics via search engines (and other algorithmic gatekeepers)

Germano, Fabrizio; Sobbrio, Francesco - 2017 - First Version: December 2016

Ranking algorithms are the information gatekeepers of the Internet era. We develop a stylized framework to study the effects of ranking algorithms on opinion dynamics. We consider rankings that depend on popularity and on personalization. We find that popularity driven rankings can enhance...

Persistent link: https://www.econbiz.de/10011669418

Crowding out the truth? : a simple model of misinformation, polarization, and meaningful social interactions

Germano, Fabrizio; Gómez, Vicenç; Sobbrio, Francesco - 2022 - This version: November 2022

This paper provides a simple theoretical framework to evaluate the effect of key parameters of ranking algorithms, namely popularity and personalization parameters, on measures of platform engagement, misinformation and polarization. The results show that an increase in the weight assigned to...

Persistent link: https://www.econbiz.de/10013413453

Bao, Yongping; Danwitz, Ludwig; Dvorak, Fabian; … - 2022

Algorithm-based decision support systems play an increasingly important role in decisions involving exploration tasks … the willingness of participants to follow the advice of a reinforcement learning algorithm depends on the fit between … their own exploration preferences and the algorithm's advice. We vary the weight that the algorithm places on exploration …

Persistent link: https://www.econbiz.de/10013482224

Strategic responses to algorithmic recommendations : evidence from hotel pricing

García, Daniel; Tolvanen, Juha; Wagner, Alexander K. - 2023

We study the interaction between algorithmic advice and human decisions using high-resolution hotel-room pricing data. We document that price setting frictions, arising from adjustment costs of human decision makers, induce a conflict of interest with the algorithmic advisor. A model of advice...

Persistent link: https://www.econbiz.de/10014444885

Search engine competition

García, Daniel - 2023

model in a dynamic setup, whereby past market shares lead to a better search algorithm. The dynamic consideration is pro …

Persistent link: https://www.econbiz.de/10014444933

Is competition only one click away? : the Digital Markets Act impact on Google Maps

Pape, Louis-Daniel; Rossi, Michelangelo - 2024

This paper examines the impact of the Digital Markets Act (DMA) on consumer behavior, focusing on changes in Google's search result presentation in the European Union (EU). Specifically, it investigates the effects of Google's removal of clickable maps in search results, a modification...

Persistent link: https://www.econbiz.de/10014632304

Nonparametric estimation of sponsored search auctions and impacts of AD quality on search revenue

Kim, Dongwoo; Pal, Pallavi - 2023

This paper presents an empirical model of sponsored search auctions in which advertisers are ranked by bid and ad quality. We introduce a new nonparametric estimator for the advertiser's ad value and its distribution under the 'incomplete information' assumption. The ad value is characterized by...

Persistent link: https://www.econbiz.de/10014228566

Incentives, search engines, and the elicitation of subjective beliefs : evidence from representative online survey experiments

Grewenig, Elisabeth; Lergetporer, Philipp; Werner, Katharina - 2019

A large literature studies subjective beliefs about economic facts using unincentivized survey questions. We devise randomized experiments in a representative online survey to investigate whether incentivizing belief accuracy affects stated beliefs about average earnings by professional degree...

Persistent link: https://www.econbiz.de/10011987028

The dark side of social media : recommender algorithms and mental health

Mandile, Simona - 2025

longitudinal dataset, allows for comparison of the same individuals before and after the introduction of the algorithm. The results … show that the introduction of the algorithm on Instagram had a negative impact on teenagers mental health. Furthermore, I … the algorithm on Instagram favoring negative social comparisons. …

Persistent link: https://www.econbiz.de/10015191592

A leverage theory of tying in two-sided markets

Choi, Jay Pil; Jeon, Doh-Shin - 2016

Partly motivated by the recent antitrust investigations concerning Google, we develop a leverage theory of tying in two …

Persistent link: https://www.econbiz.de/10011536190