Search Results for author: Chengkun Li

Found 17 papers, 10 papers with code

Normalizing Flow Regression for Bayesian Inference with Offline Likelihood Evaluations

no code implementations15 Apr 2025 Chengkun Li, Bobby Huggins, Petrus Mikkola, Luigi Acerbi

Bayesian inference with computationally expensive likelihood evaluations remains a significant challenge in many scientific domains.

Bayesian Inference regression

Stacking Variational Bayesian Monte Carlo

no code implementations7 Apr 2025 Francesco Silvestrin, Chengkun Li, Luigi Acerbi

Variational Bayesian Monte Carlo (VBMC) is a sample-efficient method for approximate Bayesian inference with computationally expensive likelihoods.

Bayesian Inference

InkSight: Offline-to-Online Handwriting Conversion by Learning to Read and Write

1 code implementation8 Feb 2024 Blagoj Mitrevski, Arina Rak, Julian Schnitzler, Chengkun Li, Andrii Maksai, Jesse Berent, Claudiu Musat

Digital note-taking is gaining popularity, offering a durable, editable, and easily indexable way of storing notes in a vectorized form, known as digital ink.

Derendering

PyVBMC: Efficient Bayesian inference in Python

1 code implementation16 Mar 2023 Bobby Huggins, Chengkun Li, Marlon Tobaben, Mikko J. Aarnos, Luigi Acerbi

PyVBMC is a Python implementation of the Variational Bayesian Monte Carlo (VBMC) algorithm for posterior and model inference for black-box computational models (Acerbi, 2018, 2020).

Bayesian Inference Model Selection +1

Modular Quantization-Aware Training for 6D Object Pose Estimation

1 code implementation12 Mar 2023 Saqib Javed, Chengkun Li, Andrew Price, Yinlin Hu, Mathieu Salzmann

MQAT guides a systematic gradated modular quantization sequence and determines module-specific bit precisions, leading to quantized models that outperform those produced by state-of-the-art uniform and mixed-precision quantization techniques.

6D Pose Estimation 6D Pose Estimation using RGB +1

Fast post-process Bayesian inference with Variational Sparse Bayesian Quadrature

1 code implementation9 Mar 2023 Chengkun Li, Grégoire Clarté, Martin Jørgensen, Luigi Acerbi

We propose the framework of post-process Bayesian inference as a means to obtain a quick posterior approximation from existing target density evaluations, with no further model calls.

Active Learning Bayesian Inference +1

Model Generalization: A Sharpness Aware Optimization Perspective

1 code implementation14 Aug 2022 Jozef Marus Coldenhoff, Chengkun Li, Yurui Zhu

Sharpness-Aware Minimization (SAM) and adaptive sharpness-aware minimization (ASAM) aim to improve the model generalization.

model valid

Robotic Surgery Remote Mentoring via AR with 3D Scene Streaming and Hand Interaction

no code implementations9 Apr 2022 Yonghao Long, Chengkun Li, Qi Dou

In this paper, we propose a novel AR-based robotic surgery remote mentoring system with efficient 3D scene visualization and natural 3D hand interaction.

Understanding Pixel-level 2D Image Semantics with 3D Keypoint Knowledge Engine

no code implementations21 Nov 2021 Yang You, Chengkun Li, Yujing Lou, Zhoujun Cheng, Liangwei Li, Lizhuang Ma, Weiming Wang, Cewu Lu

Pixel-level 2D object semantic understanding is an important topic in computer vision and could help machine deeply understand objects (e. g. functionality and affordance) in our daily life.

Are We Hungry for 3D LiDAR Data for Semantic Segmentation? A Survey and Experimental Study

no code implementations8 Jun 2020 Biao Gao, Yancheng Pan, Chengkun Li, Sibo Geng, Huijing Zhao

Finally, a systematic survey to the existing efforts to solve the data hunger problem is conducted on both methodological and dataset's viewpoints, followed by an insightful discussion of remaining problems and open questions To the best of our knowledge, this is the first work to analyze the data hunger problem for 3D semantic segmentation using deep learning techniques that are addressed in the literature review, statistical analysis, and cross-dataset and cross-algorithm experiments.

3D Semantic Segmentation Autonomous Driving +3

Semantic Correspondence via 2D-3D-2D Cycle

1 code implementation20 Apr 2020 Yang You, Chengkun Li, Yujing Lou, Zhoujun Cheng, Lizhuang Ma, Cewu Lu, Weiming Wang

Visual semantic correspondence is an important topic in computer vision and could help machine understand objects in our daily life.

Semantic correspondence

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