Who Connects Global Aid? The Hidden Geometry of 10 Million Transactions

Fuente: arXiv
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Hauptverfasser: McCarthy, Paul X., Gong, Xian, Rizoiu, Marian-Andrei, Boldi, Paolo
Format: Preprint
Veröffentlicht: 2025
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author McCarthy, Paul X.
Gong, Xian
Rizoiu, Marian-Andrei
Boldi, Paolo
author_facet McCarthy, Paul X.
Gong, Xian
Rizoiu, Marian-Andrei
Boldi, Paolo
contents The global aid system functions as a complex and evolving ecosystem; yet widespread understanding of its structure remains largely limited to aggregate volume flows. Here we map the network topology of global aid using a dataset of unprecedented scale: over 10 million transaction records connecting 2,456 publishing organisations across 230 countries between 1967 and 2025. We apply bipartite projection and dimensionality reduction to reveal the geometry of the system and unveil hidden patterns. This exposes distinct functional clusters that are otherwise sparsely connected. We find that while governments and multilateral agencies provide the primary resources, a small set of knowledge brokers provide the critical connectivity. Universities and research foundations specifically act as essential bridges between disparate islands of implementers and funders. We identify a core solar system of 25 central actors who drive this connectivity including unanticipated brokers like J-PAL and the Hewlett Foundation. These findings demonstrate that influence in the aid ecosystem flows through structural connectivity as much as financial volume. Our results provide a new framework for donors to identify strategic partners that accelerate coordination and evidence diffusion across the global network.
format Preprint
id arxiv_https___arxiv_org_abs_2512_17243
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Who Connects Global Aid? The Hidden Geometry of 10 Million Transactions
McCarthy, Paul X.
Gong, Xian
Rizoiu, Marian-Andrei
Boldi, Paolo
Physics and Society
General Economics
Economics
The global aid system functions as a complex and evolving ecosystem; yet widespread understanding of its structure remains largely limited to aggregate volume flows. Here we map the network topology of global aid using a dataset of unprecedented scale: over 10 million transaction records connecting 2,456 publishing organisations across 230 countries between 1967 and 2025. We apply bipartite projection and dimensionality reduction to reveal the geometry of the system and unveil hidden patterns. This exposes distinct functional clusters that are otherwise sparsely connected. We find that while governments and multilateral agencies provide the primary resources, a small set of knowledge brokers provide the critical connectivity. Universities and research foundations specifically act as essential bridges between disparate islands of implementers and funders. We identify a core solar system of 25 central actors who drive this connectivity including unanticipated brokers like J-PAL and the Hewlett Foundation. These findings demonstrate that influence in the aid ecosystem flows through structural connectivity as much as financial volume. Our results provide a new framework for donors to identify strategic partners that accelerate coordination and evidence diffusion across the global network.
title Who Connects Global Aid? The Hidden Geometry of 10 Million Transactions
topic Physics and Society
General Economics
Economics
url https://arxiv.org/abs/2512.17243