EconPapers    
Economics at your fingertips  
 

Robust Robustness

Ian Ball and Deniz Kattwinkel

Papers from arXiv.org

Abstract: We propose a refinement of the maxmin approach to distributional robustness. A mechanism's payoff guarantee over an ambiguity set is robust if the guarantee is approximately satisfied at priors near the ambiguity set (in the weak topology). We show that many maxmin-optimal mechanisms in the literature give payoff guarantees that are not robust. Such mechanisms are often tailored to degenerate worst-case priors, making them simple but fragile. We propose a method of enriching the ambiguity set to include all nearby priors. The associated maxmin-optimal mechanism's payoff guarantee (over this new ambiguity set) is always robust.

Date: 2024-08, Revised 2025-07
New Economics Papers: this item is included in nep-des and nep-mic
References: Add references at CitEc
Citations:

Downloads: (external link)
http://arxiv.org/pdf/2408.16898 Latest version (application/pdf)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:arx:papers:2408.16898

Access Statistics for this paper

More papers in Papers from arXiv.org
Bibliographic data for series maintained by arXiv administrators ().

 
Page updated 2025-07-26
Handle: RePEc:arx:papers:2408.16898