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Ziheng Zhang

24 accepted papers

2026

BioCAP: Exploiting Synthetic Captions Beyond Labels in Biological Foundation Models

ICLR 2026poster

This work investigates descriptive captions as an additional source of supervision for biological multimodal foundation models. Images and captions can be viewed as complementary samples from the latent morphospace of a species, each capturing certain biological traits. Incorporating captions during…

Cited by 0SourcecodeScholar
2026

GS-Playground: A High-Throughput Photorealistic Simulator for Vision-Informed Robot Learning

RSS 2026poster

Embodied AI research is undergoing a shift toward vision-centric perceptual paradigms. While massively parallel simulators have catalyzed breakthroughs in proprioception-based locomotion, their potential remains largely untapped for vision-centric tasks due to the prohibitive computational overhead …

Cited by 0SourceScholar
2026

Why Do Open-Source LLMs Struggle with Data Analysis? A Systematic Empirical Study

AAAI 2026technical

Large Language Models (LLMs) hold promise in automating data analysis tasks, yet open-source models face significant limitations in these kinds of reasoning-intensive scenarios. In this work, we investigate strategies to enhance the data analysis capabilities of open-source LLMs. By curating a seed

Cited by 0SourcePDFScholar
2025

A Survey on Foundation Language Models for Single-cell Biology

ACL 2025long

The recent advancements in language models have significantly catalyzed progress in computational biology. A growing body of research strives to construct unified foundation models for single-cell biology, with language models serving as the cornerstone. In this paper, we systematically review the d…

Cited by 0SourcePDFScholar
2025

An Intra- and Cross-frame Topological Consistency Scheme for Semi-supervised Atherosclerotic Coronary Plaque Segmentation

ICASSP 2025accepted

Enhancing the precision of segmenting coronary atherosclerotic plaques from CT Angiography (CTA) images is pivotal for advanced Coronary Atherosclerosis Analysis (CAA), which distinctively relies on the analysis of vessel cross-section images reconstructed via Curved Planar Reformation. This task pr…

Cited by 0SourceScholar
2025

DiT4SR: Taming Diffusion Transformer for Real-World Image Super-Resolution

ICCV 2025poster

Large-scale pre-trained diffusion models are becoming increasingly popular in solving the Real-World Image Super-Resolution (Real-ISR) problem because of their rich generative priors. The recent development of diffusion transformer (DiT) has witnessed overwhelming performance over the traditional UN…

Cited by 0SourcePDFScholar
2025

Finer-CAM: Spotting the Difference Reveals Finer Details for Visual Explanation

CVPR 2025poster

Class activation map (CAM) has been widely used to highlight image regions that contribute to class predictions. Despite its simplicity and computational efficiency, CAM often struggles to identify discriminative regions that distinguish visually similar fine-grained classes. Prior efforts address t…

2025

Guiding Large Language Models for Biomedical Entity Linking via Restrictive and Contrastive Decoding

EMNLP 2025

Biomedical entity linking (BioEL) aims at mapping biomedical mentions to pre-defined entities. While extensive research efforts have been devoted to BioEL, applying large language models (LLMs) for BioEL has not been fully explored. Previous attempts have revealed difficulties when directly applying

Cited by 0SourcePDFScholar
2025

Harnessing Large Language Models for Knowledge Graph Question Answering via Adaptive Multi-Aspect Retrieval-Augmentation

AAAI 2025technical

Large Language Models (LLMs) demonstrate remarkable capabilities, yet struggle with hallucination and outdated knowledge when tasked with complex knowledge reasoning, resulting in factually incorrect outputs. Previous studies have attempted to mitigate it by retrieving factual knowledge from large-s…

2025

Not All Parameters Matter: Masking Diffusion Models for Enhancing Generation Ability

CVPR 2025poster

The diffusion models, in early stages focus on constructing basic image structures, while the refined details, including local features and textures, are generated in later stages. Thus the same network layers are forced to learn both structural and textural information simultaneously, significant…

2025

Pioneer: Physics-informed Riemannian Graph ODE for Entropy-increasing Dynamics

AAAI 2025technical

Dynamic interacting system modeling is important for understanding and simulating real world systems, e.g., meteorology and the spread of COVID. The system is typically described as a graph, where multiple objects dynamically interact with each other and evolve over time. In recent years, graph Ordi…

2025

Prompt-CAM: Making Vision Transformers Interpretable for Fine-Grained Analysis

CVPR 2025poster

We present a simple approach to make pre-trained Vision Transformers (ViTs) interpretable for fine-grained analysis, aiming to identify and localize the traits that distinguish visually similar categories, such as bird species. Pre-trained ViTs, such as DINO, have demonstrated remarkable capabilitie…

2024

Biomedical Entity Linking as Multiple Choice Question Answering

COLING 2024main

Although biomedical entity linking (BioEL) has made significant progress with pre-trained language models, challenges still exist for fine-grained and long-tailed entities. To address these challenges, we present BioELQA, a novel model that treats Biomedical Entity Linking as Multiple Choice Questio…

2024

Improving Biomedical Entity Linking with Retrieval-Enhanced Learning

ICASSP 2024accepted

Biomedical entity linking (BioEL) has achieved remarkable progress with the help of pre-trained language models. However, existing BioEL methods usually struggle to handle rare and difficult entities due to long-tailed distribution. To address this limitation, we introduce a new scheme kNN-BioEL, wh…

Cited by 0SourceScholar
2024

MedJourney: Benchmark and Evaluation of Large Language Models over Patient Clinical Journey

NeurIPS 2024poster

Large language models (LLMs) have demonstrated remarkable capabilities in language understanding and generation, leading to their widespread adoption across various fields. Among these, the medical field is particularly well-suited for LLM applications, as many medical tasks can be enhanced by LLMs.…

Cited by 1SourcePDFScholar
2024

Mitigating Hallucinations of Large Language Models in Medical Information Extraction via Contrastive Decoding

EMNLP 2024finding

The impressive capabilities of large language models (LLMs) have attracted extensive interests of applying LLMs to medical field. However, the complex nature of clinical environments presents significant hallucination challenges for LLMs, hindering their widespread adoption. In this paper, we addres…

2024

Multi-perspective Improvement of Knowledge Graph Completion with Large Language Models

COLING 2024main

Knowledge graph completion (KGC) is a widely used method to tackle incompleteness in knowledge graphs (KGs) by making predictions for missing links. Description-based KGC leverages pre-trained language models to learn entity and relation representations with their names or descriptions, which shows…

2022

Multi-modal Contrastive Representation Learning for Entity Alignment

COLING 2022main

Multi-modal entity alignment aims to identify equivalent entities between two different multi-modal knowledge graphs, which consist of structural triples and images associated with entities. Most previous works focus on how to utilize and encode information from different modalities, while it is not…

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…

2021

PRGC: Potential Relation and Global Correspondence Based Joint Relational Triple Extraction

ACL 2021long

Joint extraction of entities and relations from unstructured texts is a crucial task in information extraction. Recent methods achieve considerable performance but still suffer from some inherent limitations, such as redundancy of relation prediction, poor generalization of span-based extraction and…

2021

Unsupervised Knowledge Graph Alignment by Probabilistic Reasoning and Semantic Embedding

IJCAI 2021poster

Knowledge Graph (KG) alignment is to discover the mappings (i.e., equivalent entities, relations, and others) between two KGs. The existing methods can be divided into the embedding-based models, and the conventional reasoning and lexical matching based systems. The former compute the similarity of…

2020

An Industry Evaluation of Embedding-based Entity Alignment

COLING 2020industry

Embedding-based entity alignment has been widely investigated in recent years, but most proposed methods still rely on an ideal supervised learning setting with a large number of unbiased seed mappings for training and validation, which significantly limits their usage. In this study, we evaluate th…

2019

PPGNet: Learning Point-Pair Graph for Line Segment Detection

CVPR 2019poster

In this paper, we present a novel framework to detect line segments in man-made environments. Specifically, we propose to describe junctions, line segments and relationships between them with a simple graph, which is more structured and informative than end-point representation used in existing line…

Cited by 110PDFcodeScholar