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Weiqi Zhang

13 accepted papers

2026

GaussianGrow: Geometry-aware Gaussian Growing from 3D Point Clouds with Text Guidance

CVPR 2026

3D Gaussian Splatting has demonstrated superior performance in rendering efficiency and quality, yet the generation of 3D Gaussians still remains a challenge without proper geometric priors. Existing methods have explored predicting point maps as geometric references for inferring Gaussian primitive

Cited by 0SourceScholar
2026

MedSpaformer: A Transferable Transformer with Multi-Granularity Token Sparsification for Medical Time Series Classification

AAAI 2026technical

Accurate medical time series (MedTS) classification is essential for effective clinical diagnosis, yet remains challenging due to complex multi-channel temporal dependencies, information redundancy, and label scarcity. While transformer-based models have shown promise in time series analysis, most a

Cited by 0SourcePDFScholar
2026

MoRe: Motion-aware Feed-forward 4D Reconstruction Transformer

CVPR 2026

Reconstructing dynamic 4D scenes remains challenging due to the presence of moving objects that corrupt camera pose estimation. Existing optimization methods alleviate this issue with additional supervision, but they are mostly computationally expensive and impractical in real-time applications. To

Cited by 0SourcecodeScholar
2026

SFT Doesn’t Always Hurt General Capabilities: Revisiting Domain-Specific Fine-Tuning in LLMs

ICLR 2026poster

Supervised Fine-Tuning (SFT) on domain-specific datasets is a common approach to adapt Large Language Models (LLMs) to specialized tasks but is often believed to degrade their general capabilities. In this work, we revisit this trade-off and present both empirical and theoretical insights. First, we…

Cited by 0SourceScholar
2025

GAP: Gaussianize Any Point Clouds with Text Guidance

ICCV 2025poster

3D Gaussian Splatting (3DGS) has demonstrated its advantages in achieving fast and high-quality rendering. As point clouds serve as a widely-used and easily accessible form of 3D representation, bridging the gap between point clouds and Gaussians becomes increasingly important. Recent studies have e…

2025

Learning Bijective Surface Parameterization for Inferring Signed Distance Functions from Sparse Point Clouds with Grid Deformation

CVPR 2025poster

Inferring signed distance functions (SDFs) from sparse point clouds remains a challenge in surface reconstruction. The key lies in the lack of detailed geometric information in sparse point clouds, which is essential for learning a continuous field. To resolve this issue, we present a novel approach…

Cited by 3SourcePDFScholar
2025

MaterialRefGS: Reflective Gaussian Splatting with Multi-view Consistent Material Inference

NeurIPS 2025poster

Modeling reflections from 2D images is essential for photorealistic rendering and novel view synthesis. Recent approaches enhance Gaussian primitives with reflection-related material attributes to enable physically based rendering (PBR) with Gaussian Splatting. However, the material inference often…

Cited by 0SourcecodeScholar
2025

MedualTime: A Dual-Adapter Language Model for Medical Time Series-Text Multimodal Learning

IJCAI 2025

The recent rapid advancements in language models (LMs) have garnered attention in medical time series-text multimodal learning. However, existing contrastive learning-based and prompt-based LM approaches tend to be biased, often assigning a primary role to time series modality while treating text mo

2025

Prototype-Guided Multimodal Relation Extraction based on Entity Attributes

AAAI 2025technical

Multimodal Relation Extraction (MRE) aims to predict relations between head and tail entities based on the context of sentence-image pairs. Most existing MRE methods progressively incorporate textual and visual inputs to dominate the learning process, assuming both contribute significantly to the ta…

Cited by 0SourcePDFScholar
2024

MultiPull: Detailing Signed Distance Functions by Pulling Multi-Level Queries at Multi-Step

NeurIPS 2024poster

Reconstructing a continuous surface from a raw 3D point cloud is a challenging task. Latest methods employ supervised learning or pretrained priors to learn a signed distance function (SDF). However, neural networks tend to smooth local details due to the lack of ground truth signed distnaces or nor…

Cited by 8SourcePDFScholar
2024

UDiFF: Generating Conditional Unsigned Distance Fields with Optimal Wavelet Diffusion

CVPR 2024poster

Diffusion models have shown remarkable results for image generation editing and inpainting. Recent works explore diffusion models for 3D shape generation with neural implicit functions i.e. signed distance function and occupancy function. However they are limited to shapes with closed surfaces which…

2022

GRELEN: Multivariate Time Series Anomaly Detection from the Perspective of Graph Relational Learning

IJCAI 2022poster

System monitoring and anomaly detection is a crucial task in daily operation. With the rapid development of cyber-physical systems and IT systems, multiple sensors get involved to represent the system state from different perspectives, which inspires us to detect anomalies considering feature depend…

Cited by 78SourcePDFScholar