arXiv Machine Learning

H-GLow: Accelerating Graph Generation via Hazard-Guided Discrete Flow Matching

H-Glow is a hazard‑guided framework that accelerates graph generation by decomposing Continuous‑Time Markov chain generators into hazards and conditional jump distributions. It plans graph edits and dynamically adjusts sampling time based on graph activity, allowing pretrained graph DFM models to produce higher‑quality graphs with fewer steps. The authors also propose a new graph DFM model that directly predicts hazards and conditional jumps, whose training objective cleanly splits into hazard matching and weighted jump prediction, and demonstrate its effectiveness on molecular and synthetic graph benchmarks.

arXiv Machine Learning
Oct 9

Few-Step Generation via Data-Space Iteration

The paper introduces data‑space iteration, a few‑step generation framework that eliminates the need for a fixed probability‑flow discretization. By refining predictions directly in data space with a shared generator, each iteration is trained to produce the best possible sample within its capacity. Experiments on class‑conditional ImageNet 256×256 show that data‑space iteration outperforms standard discretization baselines and matches or improves upon schedule‑searched variants without schedule‑specific training.

By Shanchuan Lin, Yansong Peng, Fu-Yun Wang, Haoqi Fan
arXiv Machine Learning
Jun 9

Insertion Based Sequence Generation with Learnable Order Dynamics

arXiv:2602. 18695v2 Announce Type: replace Abstract: Existing insertion-based masked diffusion models that generate sequences by interleaving token insertion with unmasking use fixed schedules that are not dependent on the data.

By Dhruvesh Patel, Benjamin Rozonoyer, Gaurav Pandey, Tahira Naseem, Ram\'on Fernandez Astudillo, Andrew McCallum
Hugging Face Trending Papers
Jun 23

A Time-Reparameterized Cumulative Intensity Extrapolation Sampler for Discrete Flow Matching

Discrete flow matching (DFM) provides a principled framework for generative modeling on discrete state spaces via continuous-time Markov chain dynamics. In practice, sampling for DFM commonly employs discretizations such as $τ$-leaping, yet efficient sampling methods under a limited number of function evaluations (NFE) remain less studied.

Hugging Face Trending Papers
Oct 5

Constrained Goal-directed Planar Graph Generation with Grammar-based Reinforcement Learning

The paper introduces a dataset‑free approach to generate planar graph embeddings that meet strict structural and geometric constraints. By integrating parametric graph grammars with safe reinforcement learning, the authors formulate the task as a constrained Markov decision process and use action projection to keep actions within safe sets. Their method consistently outperforms classical and deep generative baselines on a new benchmark suite for constrained, goal‑directed planar graph generation.