Author

Hanna Sumita

2 papers indexed here

We haven’t gathered this author’s papers yet. Follow them and we’ll fetch their work.

Not the right person? Other researchers publish under this name.

Preprint Aug 2026

Witness-Certified Fair Division with Comparison Queries

We study fair division of indivisible goods when agents'valuations are accessed only through ordinal comparisons between bundles, with arbitrary tie-breaking. In this model, even deciding whether a given allocation is envy-free up to one good (EF1) can be impossible. This suggests explicit fairness certificates as a na...

Tatsuhito Yamagata, Hanna Sumita · 1 citation

Preprint Sep 2026

Fractional Assignment with $\ell_1$ Preferences

We study a fractional assignment setting where $n$ objects are to be assigned to $n$ agents with unit capacity, and each agent specifies an ideal distribution over the objects. Unlike in classic random assignment, these ideal distributions are not necessarily degenerate, as agents may prefer a mixture of objects rather...

Yasushi Kawase, Warut Suksompong, Hanna Sumita et al. · 0 citations