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Ke Yu

15 accepted papers

2026

HELIX: Hybrid Encoding with Learnable Identity and Cross-dimensional Synthesis for Time Series Imputation

ICML 2026spotlight

Time series imputation benefits from leveraging cross-feature correlations, yet existing attention based methods re-discover feature relationships at each layer, lacking persistent anchors to maintain consistent representations. To address this, we propose HELIX, which assigns each feature a learnab…

Cited by 0SourceScholar
2025

AIDER: a Robust and Topic-Independent Framework for Detecting AI-Generated Text

COLING 2025main

The human-level fluency achieved by large language models in text generation has intensified the challenge of distinguishing between human-written and AI-generated texts. While current fine-tuned detectors exist, they often lack robustness against adversarial attacks and struggle with out-of-distrib…

Cited by 1SourcePDFScholar
2025

Rethinking Text-based Protein Understanding: Retrieval or LLM?

EMNLP 2025

In recent years, protein-text models have gained significant attention for their potential in protein generation and understanding. Current approaches focus on integrating protein-related knowledge into large language models through continued pretraining and multi-modal alignment, enabling simultane

2024

Concept-Guided Prompt Learning for Generalization in Vision-Language Models

AAAI 2024technical

Contrastive Language-Image Pretraining (CLIP) model has exhibited remarkable efficacy in establishing cross-modal connections between texts and images, yielding impressive performance across a broad spectrum of downstream applications through fine-tuning. However, for generalization tasks, the curre…

2024

Cross-Constrained Progressive Inference for 3D Hand Pose Estimation with Dynamic Observer-Decision-Adjuster Networks

AAAI 2024technical

Generalization is very important for pose estimation, especially for 3D pose estimation where small changes in the 2D images could trigger structural changes in the 3D space. To achieve generalization, the system needs to have the capability of detecting estimation errors by double-checking the pro…

Cited by 0SourcePDFScholar
2023

Dividing and Conquering a BlackBox to a Mixture of Interpretable Models: Route, Interpret, Repeat

ICML 2023poster

ML model design either starts with an interpretable model or a Blackbox and explains it post hoc. Blackbox models are flexible but difficult to explain, while interpretable models are inherently explainable. Yet, interpretable models require extensive ML knowledge and tend to be less flexible, poten…

2021

BasicVSR: The Search for Essential Components in Video Super-Resolution and Beyond

CVPR 2021poster

Video super-resolution (VSR) approaches tend to have more components than the image counterparts as they need to exploit the additional temporal dimension. Complex designs are not uncommon. In this study, we wish to untangle the knots and reconsider some most essential components for VSR guided by f…

Cited by 598PDFScholar
2021

Can contrastive learning avoid shortcut solutions?

NeurIPS 2021poster

The generalization of representations learned via contrastive learning depends crucially on what features of the data are extracted. However, we observe that the contrastive loss does not always sufficiently guide which features are extracted, a behavior that can negatively impact the performance on…

2021

Context Matters: Graph-based Self-supervised Representation Learning for Medical Images

AAAI 2021technical

Supervised learning method requires a large volume of annotated datasets. Collecting such datasets is time-consuming and expensive. Until now, very few annotated COVID-19 imaging datasets are available. Although self-supervised learning enables us to bootstrap the training by exploiting unlabeled d…

2021

Understanding Deformable Alignment in Video Super-Resolution

AAAI 2021technical

Deformable convolution, originally proposed for the adaptation to geometric variations of objects, has recently shown compelling performance in aligning multiple frames and is increasingly adopted for video super-resolution. Despite its remarkable performance, its underlying mechanism for alignment…

Cited by 183SourcePDFScholar
2019

Deep Network Interpolation for Continuous Imagery Effect Transition

CVPR 2019poster

Deep convolutional neural network has demonstrated its capability of learning a deterministic mapping for the desired imagery effect. However, the large variety of user flavors motivates the possibility of continuous transition among different output effects. Unlike existing methods that require a s…

Cited by 109PDFScholar
2018

Crafting a Toolchain for Image Restoration by Deep Reinforcement Learning

CVPR 2018poster

We investigate a novel approach for image restoration by reinforcement learning. Unlike existing studies that mostly train a single large network for a specialized task, we prepare a toolbox consisting of small-scale convolutional networks of different complexities and specialized in different tasks…

Cited by 235SourcePDFScholar
2018

Recovering Realistic Texture in Image Super-Resolution by Deep Spatial Feature Transform

CVPR 2018poster

Despite that convolutional neural networks (CNN) have recently demonstrated high-quality reconstruction for single-image super-resolution (SR), recovering natural and realistic texture remains a challenging problem. In this paper, we show that it is possible to recover textures faithful to semantic…