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About this paper
To Eun Kim, Alireza Salemi, Hamed Zamani, Fernando Diaz
This research introduces "Marketplace Evaluation," a simulation-based framework for assessing information access systems within competitive environments. The framework demonstrates that competitive dynamics cause agent performance and market shares to diverge from static benchmark rankings, with new market entries leading to significant shifts in concentration and dominance effects not predicted by traditional methods.
Key insights
- Competitive dynamics and user adaptation can cause marketplace rankings and outcomes to diverge significantly from static benchmark evaluations.
- Market entry by new agents can produce strong dominance effects, where high-performing models rapidly capture market share, or be largely muted in already concentrated markets.
- Market concentration (measured by HHI) shifts substantially based on agent entry and performance, indicating winner-take-all scenarios and altered competitive landscapes.
Summary by alphaXiv.
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