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Lookahead Sample Reward Guidance for Test-Time Scaling of Diffusion Models
arXiv:2602.03211v2 Announce Type: replace Abstract: Diffusion models have demonstrated strong generative performance; however, generated samples often fail to fully align with human intent. This paper studies an efficient test-time scaling method for sampling from regions with higher human-aligned reward values. Existing methods for computing the expected future reward (EFR) face important limitations: backward rollout incurs prohibitively high sampling costs, while Tweedie-based approaches,...
When Do Local Score Models Extrapolate Across Size? A Diagnostic Theory and Benchmark
Announce Type: new Abstract: Scientific generative modeling often requires size transfer, where models trained on small systems are evaluated on larger ones. While translation-invariant architectures enable this evaluation, we show that architectural locality alone does not guarantee stable size extrapolation. Instead, stable extrapolation is governed by the quasi-locality of the Gaussian-smoothed score.
'Light and cosy' £50 Home Bargains chair looks 'Pinterest-worthy'
'Light and cosy' £50 Home Bargains chair looks 'Pinterest-worthy' Store bosses claim this furniture will be an 'easy fit' for living rooms and bedrooms As part of a recent homeware refresh, Home Bargains is selling an "effortlessly chic" chair that would add a "sleek and cosy" style to a number of rooms around the house, from bedrooms and living rooms to book nooks and filling out the space around a dining table. Describing the chair online, the store website reads: "The Home Collections...
Divergence is Uncertainty: A Closed-Form Posterior Covariance for Flow Matching
Announce Type: replace Abstract: Flow matching has become a leading framework for generative modeling, but quantifying the uncertainty of its samples remains an open problem. Existing approaches retrain the model with auxiliary variance heads, maintain costly ensembles, or propagate approximate covariance through many integration steps, trading off training cost, inference cost, or accuracy.
Anthony Head brought gravitas to Buffy and everything else he touched | Jesse Hassenger
The late actor was a charming and funny father figure, and sometime singer, in the cult TV show, one of his many roles that showed just how much he could doAnthony Head, Buffy the Vampire Slayer and Ted Lasso actor, dies aged 72For years, fans eagerly anticipated the oft-floated idea of a spinoff from the cultishly beloved 1997-2003 TV series Buffy the Vampire Slayer. As described by creator Joss Whedon, this miniseries would not follow beloved supporting characters like nerdy witch Willow,...
Anthony Head brought gravitas to Buffy and everything else he touched | Jesse Hassenger
The late actor was a charming and funny father figure, and sometime singer, in the cult TV show, one of his many roles that showed just how much he could doAnthony Head, Buffy the Vampire Slayer and Ted Lasso actor, dies aged 72For years, fans eagerly anticipated the oft-floated idea of a spinoff from the cultishly beloved 1997-2003 TV series Buffy the Vampire Slayer. As described by creator Joss Whedon, this miniseries would not follow beloved supporting characters like nerdy witch Willow,...