Tag
constraints
- Apr 16, 2026 Referential Integrity and the Semantics of Foreign Key Actions What a foreign key actually asserts, how each ON DELETE and ON UPDATE action resolves the violated constraint, and why MATCH SIMPLE accepts a partially null key. databases
- Sep 25, 2025 Lagrange Duality and the KKT Conditions in Constrained Learning How multipliers convert constrained problems into stationary points of an unconstrained function, when the dual problem has the same value as the primal, and where these conditions stop being sufficient. machine learning
- May 23, 2025 Constraints Down, Sizes Up: Why Layout Is a Single Pass The layout protocol that passes size limits to children and returns chosen sizes to parents, why one pass suffices, and where intrinsic measurement forces a second. mobile computing
- Oct 23, 2024 Nulls, Three-Valued Logic, and the Constraints They Break How UNKNOWN propagates through SQL predicates, why NOT IN behaves unexpectedly with nulls, and which integrity constraints a null silently satisfies. databases
- Mar 12, 2023 Projected and Proximal Gradient Methods for Composite Objectives How constraint sets and non-differentiable penalties are handled by composing a gradient step with a projection or a proximal operator, and what the convergence rates assume. machine learning