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Chi Liu

10 accepted papers

2026

Rethinking Bias in Generative Data Augmentation for Medical AI: A Frequency Recalibration Method

AAAI 2026technical

Developing Medical AI relies on large datasets and easily suffers from data scarcity. Generative data augmentation (GDA) using AI generative models offers a solution to synthesize realistic medical images. However, the bias in GDA is often underestimated in medical domains, with concerns about the r

Cited by 0SourcePDFScholar
2025

Details Matter for Indoor Open-vocabulary 3D Instance Segmentation

ICCV 2025poster

Unlike closed-vocabulary 3D instance segmentation that is often trained end-to-end, open-vocabulary 3D instance segmentation (OV-3DIS) often leverages vision-language models (VLMs) to generate 3D instance proposals and classify them. While various concepts have been proposed from existing research,…

Cited by 0SourcePDFScholar
2024

GenRC: Generative 3D Room Completion from Sparse Image Collections

ECCV 2024poster

"Sparse RGBD scene completion is a challenging task especially when considering consistent textures and geometries throughout the entire scene. Different from existing solutions that rely on human-designed text prompts or predefined camera trajectories, we propose , an automated training-free pipeli…

2024

Manifold-Based Verbalizer Space Re-embedding for Tuning-Free Prompt-Based Classification

AAAI 2024technical

Prompt-based classification adapts tasks to a cloze question format utilizing the [MASK] token and the filled tokens are then mapped to labels through pre-defined verbalizers. Recent studies have explored the use of verbalizer embeddings to reduce labor in this process. However, all existing studies…

2024

OphNet: A Large-Scale Video Benchmark for Ophthalmic Surgical Workflow Understanding

ECCV 2024poster

"Surgical scene perception via videos is critical for advancing robotic surgery, telesurgery, and AI-assisted surgery, particularly in ophthalmology. However, the scarcity of diverse and richly annotated video datasets has hindered the development of intelligent systems for surgical workflow analysi…

2023

Towards Robust Gan-Generated Image Detection: A Multi-View Completion Representation

IJCAI 2023poster

GAN-generated image detection now becomes the first line of defense against the malicious uses of machine-synthesized image manipulations such as deepfakes. Although some existing detectors work well in detecting clean, known GAN samples, their success is largely attributable to overfitting unstable…

2023

UniCoRN: Unified Cognitive Signal ReconstructioN bridging cognitive signals and human language

ACL 2023long

Decoding text stimuli from cognitive signals (e.g. fMRI) enhances our understanding of the human language system, paving the way for building versatile Brain-Computer Interface. However, existing studies largely focus on decoding individual word-level fMRI volumes from a restricted vocabulary, which…

Cited by 19SourcePDFScholar
2022

Prompt Combines Paraphrase: Teaching Pre-trained Models to Understand Rare Biomedical Words

COLING 2022main

Prompt-based fine-tuning for pre-trained models has proven effective for many natural language processing tasks under few-shot settings in general domain. However, tuning with prompt in biomedical domain has not been investigated thoroughly. Biomedical words are often rare in general domain, but qui…

2017

Epithelium-stroma classification in histopathological images via convolutional neural networks and self-taught learning

ICASSP 2017accepted

Epithelium-stroma classification is always considered as an important preprocessing step for morphological quantitative analysis in image-based histological researches of oncologic diseases. However, large-scale accurate ground-truth labeling is expensive in histopathological image analysis, thus th…

Cited by 0SourceScholar