Search Results for author: Zheyuan Zhang

Found 36 papers, 23 papers with code

Awaking the Slides: A Tuning-free and Knowledge-regulated AI Tutoring System via Language Model Coordination

no code implementations11 Sep 2024 Daniel Zhang-li, Zheyuan Zhang, Jifan Yu, Joy Lim Jia Yin, Shangqing Tu, Linlu Gong, Haohua Wang, Zhiyuan Liu, Huiqin Liu, Lei Hou, Juanzi Li

We develop Slide2Lecture, a tuning-free and knowledge-regulated intelligent tutoring system that can (1) effectively convert an input lecture slide into a structured teaching agenda consisting of a set of heterogeneous teaching actions; (2) create and manage an interactive lecture that generates responsive interactions catering to student learning demands while regulating the interactions to follow teaching actions.

Language Modelling

From MOOC to MAIC: Reshaping Online Teaching and Learning through LLM-driven Agents

no code implementations5 Sep 2024 Jifan Yu, Zheyuan Zhang, Daniel Zhang-li, Shangqing Tu, Zhanxin Hao, Rui Miao Li, Haoxuan Li, Yuanchun Wang, Hanming Li, Linlu Gong, Jie Cao, Jiayin Lin, Jinchang Zhou, Fei Qin, Haohua Wang, Jianxiao Jiang, Lijun Deng, Yisi Zhan, Chaojun Xiao, Xusheng Dai, Xuan Yan, Nianyi Lin, Nan Zhang, Ruixin Ni, Yang Dang, Lei Hou, Yu Zhang, Xu Han, Manli Li, Juanzi Li, Zhiyuan Liu, Huiqin Liu, Maosong Sun

Since the first instances of online education, where courses were uploaded to accessible and shared online platforms, this form of scaling the dissemination of human knowledge to reach a broader audience has sparked extensive discussion and widespread adoption.

Optimizing Synthetic Data for Enhanced Pancreatic Tumor Segmentation

1 code implementation27 Jul 2024 Linkai Peng, Zheyuan Zhang, Gorkem Durak, Frank H. Miller, Alpay Medetalibeyoglu, Michael B. Wallace, Ulas Bagci

Our findings demonstrate that: (1) strategically selecting a combination of synthetic tumor sizes is crucial for optimal segmentation outcomes, and (2) generating synthetic tumors with precise boundaries significantly improves model accuracy.

Data Augmentation Decision Making +3

Simulating Classroom Education with LLM-Empowered Agents

no code implementations27 Jun 2024 Zheyuan Zhang, Daniel Zhang-li, Jifan Yu, Linlu Gong, Jinchang Zhou, Zhiyuan Liu, Lei Hou, Juanzi Li

While preliminary explorations have focused on independent LLM-empowered agents for specific educational tasks, the potential for LLMs within a multi-agent collaborative framework to simulate a classroom with real user participation remains unexplored.

Segmentation Quality and Volumetric Accuracy in Medical Imaging

no code implementations27 Apr 2024 Zheyuan Zhang, Ulas Bagci

Current medical image segmentation relies on the region-based (Dice, F1-score) and boundary-based (Hausdorff distance, surface distance) metrics as the de-facto standard.

Image Segmentation Medical Image Segmentation +2

Detection of Peri-Pancreatic Edema using Deep Learning and Radiomics Techniques

1 code implementation25 Apr 2024 Ziliang Hong, Debesh Jha, Koushik Biswas, Zheyuan Zhang, Yury Velichko, Cemal Yazici, Temel Tirkes, Amir Borhani, Baris Turkbey, Alpay Medetalibeyoglu, Gorkem Durak, Ulas Bagci

Identifying peri-pancreatic edema is a pivotal indicator for identifying disease progression and prognosis, emphasizing the critical need for accurate detection and assessment in pancreatitis diagnosis and management.

Pancreas Segmentation

COMBO: Compositional World Models for Embodied Multi-Agent Cooperation

no code implementations16 Apr 2024 Hongxin Zhang, Zeyuan Wang, Qiushi Lyu, Zheyuan Zhang, Sunli Chen, Tianmin Shu, Yilun Du, Chuang Gan

In this paper, we investigate the problem of embodied multi-agent cooperation, where decentralized agents must cooperate given only partial egocentric views of the world.

Explainable Transformer Prototypes for Medical Diagnoses

1 code implementation11 Mar 2024 Ugur Demir, Debesh Jha, Zheyuan Zhang, Elif Keles, Bradley Allen, Aggelos K. Katsaggelos, Ulas Bagci

Deployments of artificial intelligence in medical diagnostics mandate not just accuracy and efficacy but also trust, emphasizing the need for explainability in machine decisions.

Reverse That Number! Decoding Order Matters in Arithmetic Learning

no code implementations9 Mar 2024 Daniel Zhang-li, Nianyi Lin, Jifan Yu, Zheyuan Zhang, Zijun Yao, Xiaokang Zhang, Lei Hou, Jing Zhang, Juanzi Li

Recent advancements in pretraining have demonstrated that modern Large Language Models (LLMs) possess the capability to effectively learn arithmetic operations.

Subgraph Pooling: Tackling Negative Transfer on Graphs

1 code implementation14 Feb 2024 Zehong Wang, Zheyuan Zhang, Chuxu Zhang, Yanfang Ye

Unlike in image or text data, we find that negative transfer could commonly occur in graph-structured data, even when source and target graphs have semantic similarities.

Transfer Learning

Graph Inference Acceleration by Learning MLPs on Graphs without Supervision

1 code implementation14 Feb 2024 Zehong Wang, Zheyuan Zhang, Chuxu Zhang, Yanfang Ye

Graph Neural Networks (GNNs) have demonstrated effectiveness in various graph learning tasks, yet their reliance on message-passing constraints their deployment in latency-sensitive applications such as financial fraud detection.

Fraud Detection Graph Learning

Eliciting In-Context Learning in Vision-Language Models for Videos Through Curated Data Distributional Properties

1 code implementation28 Nov 2023 Keunwoo Peter Yu, Zheyuan Zhang, Fengyuan Hu, Shane Storks, Joyce Chai

Our results, analysis, and \eilev{}-trained models yield numerous insights about the emergence of in-context learning over video and text, creating a foundation for future work to optimize and scale VLMs for open-domain video understanding and reasoning.

In-Context Learning Video Understanding

From Heuristic to Analytic: Cognitively Motivated Strategies for Coherent Physical Commonsense Reasoning

1 code implementation24 Oct 2023 Zheyuan Zhang, Shane Storks, Fengyuan Hu, Sungryull Sohn, Moontae Lee, Honglak Lee, Joyce Chai

We incorporate these interlinked dual processes in fine-tuning and in-context learning with PLMs, applying them to two language understanding tasks that require coherent physical commonsense reasoning.

In-Context Learning Physical Commonsense Reasoning

EMIT-Diff: Enhancing Medical Image Segmentation via Text-Guided Diffusion Model

no code implementations19 Oct 2023 Zheyuan Zhang, Lanhong Yao, Bin Wang, Debesh Jha, Elif Keles, Alpay Medetalibeyoglu, Ulas Bagci

We leverage recent diffusion probabilistic models to generate realistic and diverse synthetic medical image data that preserve the essential characteristics of the original medical images by incorporating edge information of objects to guide the synthesis process.

Data Augmentation Image Generation +4

Exploring the Cognitive Knowledge Structure of Large Language Models: An Educational Diagnostic Assessment Approach

no code implementations12 Oct 2023 Zheyuan Zhang, Jifan Yu, Juanzi Li, Lei Hou

We aim to reveal the knowledge structures of LLMs and gain insights of their cognitive capabilities.

Radiomics Boosts Deep Learning Model for IPMN Classification

no code implementations11 Sep 2023 Lanhong Yao, Zheyuan Zhang, Ugur Demir, Elif Keles, Camila Vendrami, Emil Agarunov, Candice Bolan, Ivo Schoots, Marc Bruno, Rajesh Keswani, Frank Miller, Tamas Gonda, Cemal Yazici, Temel Tirkes, Michael Wallace, Concetto Spampinato, Ulas Bagci

We test our proposed decision-fusion model in multi-center data sets of 246 multi-contrast MRI scans and obtain superior performance to the state of the art (SOTA) in this field.

Classification Decision Making

LittleMu: Deploying an Online Virtual Teaching Assistant via Heterogeneous Sources Integration and Chain of Teach Prompts

1 code implementation11 Aug 2023 Shangqing Tu, Zheyuan Zhang, Jifan Yu, Chunyang Li, Siyu Zhang, Zijun Yao, Lei Hou, Juanzi Li

However, few MOOC platforms are providing human or virtual teaching assistants to support learning for massive online students due to the complexity of real-world online education scenarios and the lack of training data.

Language Modelling Question Answering +1

Ensemble Learning with Residual Transformer for Brain Tumor Segmentation

no code implementations31 Jul 2023 Lanhong Yao, Zheyuan Zhang, Ulas Bagci

Brain tumor segmentation is an active research area due to the difficulty in delineating highly complex shaped and textured tumors as well as the failure of the commonly used U-Net architectures.

Brain Tumor Segmentation Ensemble Learning +2

GazeSAM: What You See is What You Segment

1 code implementation26 Apr 2023 Bin Wang, Armstrong Aboah, Zheyuan Zhang, Ulas Bagci

This study investigates the potential of eye-tracking technology and the Segment Anything Model (SAM) to design a collaborative human-computer interaction system that automates medical image segmentation.

Image Segmentation Medical Image Segmentation +2

Domain Generalization with Adversarial Intensity Attack for Medical Image Segmentation

1 code implementation5 Apr 2023 Zheyuan Zhang, Bin Wang, Lanhong Yao, Ugur Demir, Debesh Jha, Ismail Baris Turkbey, Boqing Gong, Ulas Bagci

In real-world scenarios, however, it is common for models to encounter data from new and different domains to which they were not exposed to during training.

Diversity Domain Generalization +3

Domain Generalization with Correlated Style Uncertainty

1 code implementation20 Dec 2022 Zheyuan Zhang, Bin Wang, Debesh Jha, Ugur Demir, Ulas Bagci

In this regard, style augmentation is a strong DG method taking advantage of instance-specific feature statistics containing informative style characteristics to synthetic novel domains.

Domain Generalization Retrieval

The Effects of In-domain Corpus Size on pre-training BERT

1 code implementation15 Dec 2022 Chris Sanchez, Zheyuan Zhang

Many prior language modeling efforts have shown that pre-training on an in-domain corpus can significantly improve performance on downstream domain-specific NLP tasks.

Language Modelling

Towards a General Pre-training Framework for Adaptive Learning in MOOCs

1 code implementation18 Jul 2022 Qingyang Zhong, Jifan Yu, Zheyuan Zhang, Yiming Mao, Yuquan Wang, Yankai Lin, Lei Hou, Juanzi Li, Jie Tang

Adaptive learning aims to stimulate and meet the needs of individual learners, which requires sophisticated system-level coordination of diverse tasks, including modeling learning resources, estimating student states, and making personalized recommendations.

Knowledge Tracing

Dynamic Linear Transformer for 3D Biomedical Image Segmentation

1 code implementation1 Jun 2022 Zheyuan Zhang, Ulas Bagci

Transformer-based neural networks have surpassed promising performance on many biomedical image segmentation tasks due to a better global information modeling from the self-attention mechanism.

Decoder Image Segmentation +4

Transformer based Generative Adversarial Network for Liver Segmentation

1 code implementation21 May 2022 Ugur Demir, Zheyuan Zhang, Bin Wang, Matthew Antalek, Elif Keles, Debesh Jha, Amir Borhani, Daniela Ladner, Ulas Bagci

The premise behind this choice is that the self-attention mechanism of the Transformers allows the network to aggregate the high dimensional feature and provide global information modeling.

Generative Adversarial Network Image Segmentation +3

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