{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,11]],"date-time":"2025-11-11T06:23:47Z","timestamp":1762842227270,"version":"build-2065373602"},"reference-count":25,"publisher":"Oxford University Press (OUP)","issue":"5","license":[{"start":{"date-parts":[[2025,6,6]],"date-time":"2025-06-06T00:00:00Z","timestamp":1749168000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"NUS Start-up","award":["A-0004824-00-0"],"award-info":[{"award-number":["A-0004824-00-0"]}]},{"name":"Singapore Ministry of Education AcRF Tier 1","award":["A-8000466-00-00"],"award-info":[{"award-number":["A-8000466-00-00"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2025,11,11]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>We introduce a general framework for testing goodness-of-fit for Gaussian graphical models in both the low- and high-dimensional settings. This framework is based on a novel algorithm for generating exchangeable copies by conditioning on sufficient statistics. This framework provides exact finite-sample error control regardless of the dimension and allows flexible choices of test statistics to improve power. We explore several candidate test statistics and conduct extensive simulation studies to demonstrate their finite-sample performance compared to existing methods. The proposed tests exhibit superior power, particularly in cases where the true precision matrix deviates from the null hypothesis due to many small nonzero entries. To justify theoretically, we consider a high-dimensional setting where the proposed test achieves rate-optimality under two distinct signal patterns in the precision matrix: (1) dense patterns with many small nonzero entries and (2) strong patterns with at least one large entry. Finally, we illustrate the usefulness of the proposed test through real-world applications.<\/jats:p>","DOI":"10.1093\/jrsssb\/qkaf032","type":"journal-article","created":{"date-parts":[[2025,5,26]],"date-time":"2025-05-26T07:23:44Z","timestamp":1748244224000},"page":"1619-1635","source":"Crossref","is-referenced-by-count":0,"title":["Goodness-of-fit tests for high-dimensional Gaussian graphical models via exchangeable sampling"],"prefix":"10.1093","volume":"87","author":[{"given":"Xiaotong","family":"Lin","sequence":"first","affiliation":[{"name":"Department of Statistics and Data Science, National University of Singapore ,","place":["Singapore"]}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Weihao","family":"Li","sequence":"additional","affiliation":[{"name":"Department of Statistics and Data Science, National University of Singapore 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