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Alastair van Heerden

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…

Cited by 0SourceScholar
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

Cited by 0Scholar
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…

Cited by 0SourceScholar