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Cheryl Johnson

3 accepted papers

2026

Adaptive Multi-Round Allocation with Stochastic Arrivals

ICML 2026poster

We study a sequential resource allocation problem motivated by adaptive network recruitment, in which a limited budget of identical resources must be allocated over multiple rounds to individuals with stochastic referral capacity. Successful referrals endogenously generate future decision opportunit…

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2026

Policy-Embedded Graph Expansion: Networked HIV Testing with Diffusion-Driven Network Samples

IJCAI 2026

HIV is a retrovirus that attacks the human immune system and can lead to death without proper treatment. In collaboration with the WHO and a large South African university, we study how to improve the efficiency of HIV testing with the goal of eventual deployment, directly supporting progress toward

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2025

Adaptive Frontier Exploration on Graphs with Applications to Network-Based Disease Testing

NeurIPS 2025poster

We study a sequential decision-making problem on a $n$-node graph $\mathcal{G}$ where each node has an unknown label from a finite set $\mathbf{\Omega}$, drawn from a joint distribution $\mathcal{P}$ that is Markov with respect to $\mathcal{G}$. At each step, selecting a node reveals its label and y…

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