Here Be Livestreams: Trade-offs in Creating Temporal Maps of Reddit
Virginia Partridge, Jasmine Mangat, Rebecca Curran, Ryan McGrady,, Ethan Zuckerman

TL;DR
This paper introduces a method for creating stable, meaningful temporal maps of Reddit communities using community embeddings, enabling analysis of community evolution and stability over time.
Contribution
It presents a novel approach to mapping Reddit communities over time with minimal data, combining quantitative and qualitative analyses, and introduces a publicly accessible web tool.
Findings
A month of Reddit comments suffices for quality snapshot embeddings.
Identified stable communities like Reddit Public Access Network.
Detected emerging communities such as NFT trading.
Abstract
We present a method for mapping Reddit communities that accounts for temporal shifts, using quantitative and qualitative analyses of clustering techniques to produce high-quality, stable, and meaningful maps for researchers, journalists and casual Reddit users. Building on previous work using community embeddings, we find that only a month of Reddit comments suffices to create snapshot embeddings that maintain quality while supporting insight into changes in Reddit communities over time. Comparing different clusterings of community embeddings with quantitative measures of quality and temporal stability, we describe properties of the models and what they tell us about the underlying Reddit data. Moreover, qualitative analysis of the resulting clusters illuminate which properties of clusterings are useful for analysis of Reddit communities. Although clusterings of subreddits have been…
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Taxonomy
TopicsComplex Network Analysis Techniques · Human Mobility and Location-Based Analysis · Opinion Dynamics and Social Influence
