Source · NVIDIA Research
lab NVIDIA Research · 6d ago · 28 views

Nvidia presents FusionRelight for real-time portrait relighting via hybrid domain knowledge fusion

Researchers from Nvidia have introduced FusionRelight, a method for portrait relighting that combines physically plausible illumination transfer with identity preservation and compact real-time inference. The approach utilizes Hybrid Domain Knowledge Fusion (HDKF), a training framework that distills physics, reflectance, and realism priors from synthetic, One-Light-at-a-Time (OLAT), and in-the-wild data into a student model.

lab NVIDIA Research · 9d ago · 61 views

LLMs match or beat Bayesian optimization for hyperparameter optimization

A new paper explores using foundational large language models (LLMs) to automate hyperparameter optimization (HPO), a process that typically relies on manual approaches in limited-budget settings. The authors developed a methodology where LLMs suggest hyperparameter configurations based on dataset and model descriptions, which are then iteratively refined according to model performance.

lab NVIDIA Research · 9d ago · 56 views

Source introduces approximate unrolled differentiation for training data attribution

Researchers introduce Source, a new training data attribution (TDA) method that combines the computational efficiency of influence functions with the accuracy of unrolling-based approaches. By using an influence-function-like formula to approximate unrolled differentiation, Source addresses limitations in implicit differentiation methods, such as their failure to account for optimization bias or multi-stage pipelines.

lab NVIDIA Research · 10d ago · 28 views

ZPPO uses prompts instead of gradients to improve small vision-language model training

Researchers introduce Zone of Proximal Policy Optimization (ZPPO), a method that injects teacher knowledge into prompts rather than policy gradients to address brittleness in knowledge distillation and drift in reinforcement learning. ZPPO constructs Binary Candidate-included Questions (BCQ) and Negative Candidate-included Questions (NCQ) for hard questions, recirculating them via a replay buffer until the student's accuracy improves or they are evicted.

lab NVIDIA Research · 24d ago · 28 views

NVIDIA introduces Spatial-IQ, a hierarchical diagnostic framework for multimodal model spatial reasoning

Researchers at NVIDIA have introduced Spatial-IQ, a diagnostic framework designed to deconstruct the spatial intelligence of multimodal large language models (MLLMs). Unlike existing benchmarks that treat models as black boxes, this approach decomposes object counting in stacked 3D structures into nine perceptual and cognitive sub-tasks aligned with human developmental stages.