Fixed-Component Mixture-Weight EM

Identity Notes & Concept Scope The name is a descriptive AIMech label for the fixed-component coefficient iteration in Csiszar-Tusnady Theorem5 and its mixture-decomposition interpretation. Fixed component laws do not mean merely a fixed number of components. This retains a distinct convex weight-fitting problem beneath generic EM; joint component-parameter fitting in Gaussian mixtures or MPPCA is outside it, and a mixture density network predicts input-dependent parameters instead. No normalized identity collision across all 442 pinned AIO IDs, labels/scoped synonyms and 483 maintained IDs, names and aliases. Full-checkout searches in the worktree and main included ignored and hidden files: 8 and 9 matched lines, respectively, reduce to six distinct matched texts, all inspected. Hits concern existing discovery leads and the unrelated assembler mnemonic AAM. The fixed-family exact KL projection procedure is narrower than generalized alternating minimization; weight-only EM fixes component laws rather than fitting a full mixture model; rate-distortion BA minimizes information plus distortion with a fixed source, whereas the IM algorithm maximizes a variational information bound; adaptive alternating minimization changes the feasible families at each iteration. Qualified AAM and descriptive weight-only names avoid unsupported acronym or historical naming claims. Absence is bounded to this snapshot and inspected corpus. Identity-search counts: 8 worktree and 9 main matched lines, all six distinct texts read, including ignored and hidden files.