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Posterior Refinement
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posterior-refinement-8240d6c1·1 events·first seen 17h agoAliases: Posterior Refinement
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iterative trajectory refinementadversarial refinementExact Posterior ScorePosterior Refinement: Fast Language Generation via Any-Order Flow Mapsdiffusion posterior samplingposterior predictive variance minimizationself-refinementverification-refinement loopReProExact Posterior Score Estimation for Solving Linear Inverse Problemspost-training alignmentBoundary Sharpening
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FMLM+ introduces Posterior Refinement for fast non-autoregressive language generation
Researchers introduce FMLM+, a framework combining Flow Map Language Models with masking-style noise schedules to enable joint sequence generation with per-token global consistency scoring. The key contribution is Posterior Refinement, an inference-time self-correction strategy that matches discrete baseline performance with 32x fewer neural function evaluations (NFEs). The approach improves the speed-quality tradeoff over both Masked Diffusion Models and standard FLMMs across multiple benchmarks, addressing longstanding factorization error problems in non-autoregressive generation.