A. Philip Dawid

Bayesian statistician who, with Allan M. Skene, published "Maximum Likelihood Estimation of Observer Error-Rates Using the EM Algorithm" in 1979 — a method for reconciling disagreeing raters (in the paper's own worked example, five anaesthetists rating patients' fitness for surgery) that later statisticians named the Dawid-Skene model. He went on to a career as a leading Bayesian statistician at UCL and Cambridge, was elected a Fellow of the Royal Society in 2018, and is also known for work in forensic statistics (probabilistic evaluation of evidence in court) and causal-inference notation. Matters to this vault as the traced root of a real, two-hop citation lineage: the Dawid-Skene model is the explicitly credited ancestor of Li & Yu (2014)'s crowdsourcing weighted-majority-voting method, which RA-RAG (2025) explicitly extends for LLM retrieval — a 46-year, citation-verified inheritance rather than the vault's more common pattern of independent reinvention under a shared name.

References

• 2026-08-13: Co-creator of the 1979 confusion-matrix/EM model that Li & Yu (2014) name as crowdsourcing WMV's direct ancestor, itself extended by RA-RAG (2025). (claim-li-yu-2014-credits-dawid-skene-1979-as-wmv-ancestor, claim-dawid-skene-1979-worked-example-is-anaesthetist-fitness-ratings)