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Jiajun Zhu

6 accepted papers

2026

PatchScene: Patch-based Voxel Diffusion Model for Large-Scale Scene Completion

CVPR 2026

We propose PatchScene, a novel diffusion-based framework for large-scale LiDAR scene completion. Unlike existing methods that rely on global latent representations or dense voxel grids, PatchScene adopts a patch-based voxel diffusion paradigm that explicitly generates fine-grained geometry within lo

Cited by 0SourceScholar
2026

When Do Graph Foundation Models Transfer? A Data-Centric Theory

ICML 2026poster

Graph foundation models (GFMs) aim to reuse a single backbone across diverse graph domains, yet their transfer is often uneven and can exhibit negative transfer. While most prior work improves transfer through architectural or adaptation choices, we ask a data-centric question: *which properties of …

Cited by 0SourceScholar
2025

PanoSplatt3R: Leveraging Perspective Pretraining for Generalized Unposed Wide-Baseline Panorama Reconstruction

ICCV 2025poster

Wide-baseline panorama reconstruction has emerged as a highly effective and pivotal approach for not only achieving geometric reconstruction of the surrounding 3D environment, but also generating highly realistic and immersive novel views. Although existing methods have shown remarkable performance…

Cited by 0SourcePDFScholar
2025

Rethinking Addressing in Language Models via Contextualized Equivariant Positional Encoding

ICML 2025poster

Transformers rely on both content-based and position-based addressing mechanisms to make predictions, but existing positional encoding techniques often diminish the effectiveness of position-based addressing. Many current methods enforce rigid patterns in attention maps, limiting the ability to mode…

Cited by 1SourcePDFScholar
2025

Understanding and Mitigating Bottlenecks of State Space Models through the Lens of Recency and Over-smoothing

ICLR 2025poster

Structured State Space Models (SSMs) have emerged as alternatives to transformers. While SSMs are often regarded as effective in capturing long-sequence dependencies, we rigorously demonstrate that they are inherently limited by strong recency bias. Our empirical studies also reveal that this bias i…

2024

Fine-Tuning Graph Neural Networks by Preserving Graph Generative Patterns

AAAI 2024technical

Recently, the paradigm of pre-training and fine-tuning graph neural networks has been intensively studied and applied in a wide range of graph mining tasks. Its success is generally attributed to the structural consistency between pre-training and downstream datasets, which, however, does not hold…