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Uncovering the Role of Weak Ties in Implicit Networks of Influence: A Network Analysis on Recommendation Algorithms’ Neighborhood
Baccelloni, Angelo Mazzù, Marco Francesco Ricotta, Francesco Mattiacci, Alberto
Mazzù, Marco Francesco
Ricotta, Francesco
Mattiacci, Alberto
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Abstract
Purpose
In the contemporary postmodern context, consumers are often portrayed as liberated from social ties, fostering an environment conducive to individualism. Algorithmic artifacts, such as recommendation algorithms (RAs), are contributing to this paradigm by functioning as anti-link tools: they establish implicit social links among individuals with similar preferences, giving rise to clusters termed neighborhoods. These neighborhoods facilitate the provision of personalized suggestions based on shared interests, paradoxically fostering social connections amid the backdrop of individualism. RAs actively generate implicit networks of influence characterized by users sharing analogous preferences, thereby enhancing the predictability of user behaviors. Despite extensive research on explicit networks of influence and the impact of RAs on decision-making, there remains a scarcity of evidence on how users influence others within implicitly generated networks and the roles they play in shaping information flow across such networks. The purpose of this paper is to address this gap by examining how user interactions contribute to influence dynamics and information dissemination within implicit networks.
Design/methodology/approach
This study, drawing on the strength of weak ties theory, analyzes with a social network analysis a real-world network of 37,427 users and 1,300 products facilitated by RAs on an e-commerce platform.
Findings
The results contribute to literature on word-of-mouth (WOM) by clarifying the inherent characteristics and interconnections within implicit influence networks driven by recommendation agents (RAs). The findings identify the key users responsible for accelerating recommendations diffusion within these networks and reveal significant implications for scholars and marketers seeking to comprehend the effects of product recommendations in e-commerce contexts and refine their targeting strategies.
Research limitations/implications
The results contribute to the existing literature by highlighting the inherent characteristics and connections of implicit networks of influence facilitated by recommendation agents (RAs), identify the key users who facilitate the flow of the information inside the networks.
Practical implications
The paper shed light on substantial implications for WOM scholars and marketers aiming to understand the effects of product recommendations in an e-commerce setting and targeting processes.
Originality/value
To the best of authors’ knowledge, this study represents the first investigation into the implicit networks of influence facilitated by Ras.
Description
Date
2025
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Keywords
Recommendation agents, Word-of-mouth, Implicit network of influence, Social network, Weak ties, Neighborhoods
Citation
Baccelloni, Angelo, Marco Francesco Mazzú, Francesco Ricotta, and Alberto Mattiacci. “Uncovering the Role of Weak Ties in Implicit Networks of Influence: A Network Analysis on Recommendation Algorithms’ Neighborhood.” European Journal of Marketing, November 11, 1–38. 2025.