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Data Party THU
Data Party THU
Jan 18, 2026 · Artificial Intelligence

Unlocking 3D Scene Synthesis: A Deep Dive into Neural Radiance Fields (NeRF)

This article explains the core principles of Neural Radiance Fields, detailing how a fully‑connected network maps 5‑D coordinates to color and density, the role of positional encoding and hierarchical sampling, and provides a complete PyTorch implementation with training and rendering examples.

3D Scene RepresentationHierarchical SamplingNeRF
0 likes · 18 min read
Unlocking 3D Scene Synthesis: A Deep Dive into Neural Radiance Fields (NeRF)
Amap Tech
Amap Tech
Sep 4, 2025 · Artificial Intelligence

How Hierarchical Sampling Boosts Self‑Taught Reasoning in LLMs

HS‑STAR introduces a three‑stage hierarchical sampling framework that identifies high‑utility boundary problems, reallocates computation budget to them, and fine‑tunes large language models, achieving significant accuracy gains on math reasoning benchmarks without extra sampling cost.

HS-STARHierarchical Samplingdifficulty estimation
0 likes · 10 min read
How Hierarchical Sampling Boosts Self‑Taught Reasoning in LLMs