Incremental Expectation Maximization

Identity Notes & Concept Scope This record denotes the Neal-Hinton exact-cache fixed-data construction. It revisits a fixed data set and subtracts each selected case’s old contribution before adding its new one. It is distinct from streaming observation arrival, exponentially decayed online statistics, decreasing-step SAEM, arbitrary Gibbs updates of dependent latent coordinates and fixed-current-E GEM. Small batches of cases are a scheduling realization rather than a separate identity. Bare IEM is not asserted as an unambiguous alias. No normalized identity matches among 442 pinned and 476 maintained records, including acronym probes. GEM is the exact-current-E/Q-improvement framework, IEM refreshes cached independent cases, sparse EM preserves frozen outside mass, and DAEM is the warm-started cooling-to-beta1 procedure. Existing TEM has the same finite-state fixed-beta update, but its broader update framework and held-out inverse-annealing realization do not define that outer cooling procedure. ECM, AECM and SAGE specialize parameter/augmentation updates, not these case or probability-subset operations. Structured factorial-HMM variational inference imposes a different family restriction. Names and incidental frontier references do not establish identity; qualified GEM/IEM aliases avoid unrelated uses. The absence assessment is bounded to this snapshot and corpus. Identity-search counts: 253 matched lines in the worktree and 260 in main; all 98 distinct matching-text windows were read, with ignored and hidden files included.