Sangtae Ahn

48 papers A* 2B 1Journal 36Unranked 9
YearRankTypeTitle / Venue / Authors
2026 J jnl
Embedded machine learning framework for respiratory disease detection.
Biomed. Signal Process. Control.
Mehadi Hasan Bijoy, Mohtasin Fuad, H. M. Nahid Kawsar, Md Tanvir Islam, Kamrul Hasan, Sangtae Ahn
2026 J jnl
Reinforcement Learning-Based IT-2 Fuzzy Fractional-Order Sliding Mode Control for Leader-Follower Formation Tracking of Flexible-Joint Robots.
IEEE Trans. Fuzzy Syst.
Govindasamy Narayanan, Sangmoon Lee, Sangtae Ahn
2026 J jnl
Reinforcement Learning-Based Prescribed-Time Fault-Tolerant Fuzzy Optimal Tracking Control for Stochastic Nonlinear Systems and Its Application to Robot Arm.
IEEE Trans. Syst. Man Cybern. Syst.
Govindasamy Narayanan, Sang-Moon Lee, Sangtae Ahn
2026 J jnl
Secure communication based on an impulsive and event-triggered synchronization control mechanism of fractional-order chaotic complex-valued memristive neural networks.
Soft Comput.
Govindasamy Narayanan, M. Syed Ali, Rajagopal Karthikeyan, Sangtae Ahn, R. Perumal
2026 A* conf
Spatially-Guided Self-Attention Refinement for Zero-Shot Hair Segmentation (Student Abstract).
AAAI
Suin Kim, Jihoon Lee, Moonsung Kang, Doheun Cha, Sangtae Ahn
2025 J jnl
Adaptive event-triggered stochastic estimator-based sampled-data fuzzy control for fractional-order permanent magnet synchronous generator-based wind energy systems.
Expert Syst. Appl.
Govindasamy Narayanan, Sangtae Ahn, Yong Wang, Jae Hoon Jeong, Young Hoon Joo
2025 J jnl
Deep scene understanding with extended text description for human object interaction detection.
Expert Syst. Appl.
Hye-Seong Hong, Jeong-Cheol Lee, Abhishek Kumar, Sangtae Ahn, Dong-Gyu Lee
2025 J jnl
Fractional impulsive controller design of fractional-order fuzzy systems with average dwell-time strategy and its application to wind energy systems.
Commun. Nonlinear Sci. Numer. Simul.
Govindasamy Narayanan, M. Syed Ali, Sangtae Ahn, Young Hoon Joo, Rajagopal Karthikeyan, Grienggrai Rajchakit
2025 J jnl
Intelligent Resilient Security Control for Fractional-Order Multiagent Networked Systems Using Reinforcement Learning and Event-Triggered Communication Mechanism.
IEEE Trans. Cybern.
Govindasamy Narayanan, Rajagopal Karthikeyan, Sang-Moon Lee, Sangtae Ahn
2025 J jnl
Multimodal feature fusion for human activity recognition using human centric temporal transformer.
Eng. Appl. Artif. Intell.
Samee Ullah Khan, Maryam Sultana, Sufyan Danish, Deepak Gupta, Norah Saleh Alghamdi, Suchang Woo, Dong-Gyu Lee, Sangtae Ahn
2025 J jnl
Optimal fractional fuzzy sliding-mode control for fractional-order fuzzy systems based on actor-critic reinforcement learning scheme.
J. Frankl. Inst.
Govindasamy Narayanan, Sangmoon Lee, Sangtae Ahn
2025 J jnl
STCNet: Spatio-Temporal Cross Network with subject-aware contrastive learning for hand gesture recognition in surface EMG.
Comput. Biol. Medicine
Jaemo Yang, Doheun Cha, Dong-Gyu Lee, Sangtae Ahn
2024 A* conf
DAFT-GAN: Dual Affine Transformation Generative Adversarial Network for Text-Guided Image Inpainting.
ACM Multimedia
Jihoon Lee, Yunhong Min, Hwidong Kim, Sangtae Ahn
2024 J jnl
DAFT-GAN: Dual Affine Transformation Generative Adversarial Network for Text-Guided Image Inpainting.
CoRR
Jihoon Lee, Yunhong Min, Hwidong Kim, Sangtae Ahn
2024 — conf
Object Detection in Surveillance Video using EEG with Domain Adaptation Approach.
BCI
Min-Hu Yun, Hyeonjin Jang, Sangtae Ahn, Hyun-Chul Kim
2024 J jnl
Optimizing Prompts Using In-Context Few-Shot Learning for Text-to-Image Generative Models.
IEEE Access
Seunghun Lee, Jihoon Lee, Chan Ho Bae, Myung-Seok Choi, Ryong Lee, Sangtae Ahn
2023 J jnl
An Investigation of Stochastic Variance Reduction Algorithms for Relative Difference Penalized 3D PET Image Reconstruction.
IEEE Trans. Medical Imaging
Robert Twyman, Simon R. Arridge, Zeljko Kereta, Bangti Jin, Ludovica Brusaferri, Sangtae Ahn, Charles W. Stearns, Brian F. Hutton, Irene A. Burger, Fotis Kotasidis, Kris Thielemans
2023 J jnl
Improving the performance of object detection by preserving label distribution.
CoRR
Heewon Lee, Sangtae Ahn
2022 J jnl
A Fast Convergent Ordered-Subsets Algorithm With Subiteration-Dependent Preconditioners for PET Image Reconstruction.
IEEE Trans. Medical Imaging
Jianfeng Guo, Charles Ross Schmidtlein, Andrzej Król, Si Li, Yizun Lin, Sangtae Ahn, Charles W. Stearns, Yuesheng Xu
2022 J jnl
Deep learning-based reconstruction of highly accelerated 3D MRI.
CoRR
Sangtae Ahn, Uri Wollner, Graeme McKinnon, Isabelle Heukensfeldt Jansen, Rafi Brada, Dan Rettmann, Ty A. Cashen, John Huston, J. Kevin DeMarco, Robert Y. Shih, Joshua D. Trzasko, Christopher J. Hardy, Thomas K. F. Foo
2022 J jnl
Individualized diagnosis of preclinical Alzheimer's Disease using deep neural networks.
Expert Syst. Appl.
Jinhee Park, Sehyeon Jang, Jeonghwan Gwak, Byeong C. Kim, Jang Jae Lee, Kyu Yeong Choi, Kun Ho Lee, Sung Chan Jun, Gil-Jin Jang, Sangtae Ahn
2021 J jnl
A Fast Convergent Ordered-Subsets Algorithm with Subiteration-Dependent Preconditioners for PET Image Reconstruction.
CoRR
Jianfeng Guo, Charles Ross Schmidtlein, Andrzej Król, Si Li, Yizun Lin, Sangtae Ahn, Charles W. Stearns, Yuesheng Xu
2021 B conf
Adaptive Gradient Balancing for Undersampled MRI Reconstruction and Image-to-Image Translation.
ICCP
Itzik Malkiel, Sangtae Ahn, Valentina Taviani, Anne Menini, Lior Wolf, Christopher J. Hardy
2021 J jnl
Adaptive Gradient Balancing for Undersampled MRI Reconstruction and Image-to-Image Translation.
CoRR
Itzik Malkiel, Sangtae Ahn, Valentina Taviani, Anne Menini, Lior Wolf, Christopher J. Hardy
2021 J jnl
Artificial Intelligence in PET: an Industry Perspective.
CoRR
Arkadiusz Sitek, Sangtae Ahn, Evren Asma, Adam Chandler, Alvin Ihsani, Sven Prevrhal, Arman Rahmim, Babak Saboury, Kris Thielemans
2020 J jnl
A Novel Approach for Correcting Multiple Discrete Rigid In-Plane Motions Artefacts in MRI Scans.
CoRR
Michael Rotman, Rafi Brada, Israel Beniaminy, Sangtae Ahn, Christopher J. Hardy, Lior Wolf
2020 J jnl
Benefits of Using a Spatially-Variant Penalty Strength With Anatomical Priors in PET Reconstruction.
IEEE Trans. Medical Imaging
Yu-Jung Tsai, Georg Schramm, Sangtae Ahn, Alexandre Bousse, Simon R. Arridge, Johan Nuyts, Brian F. Hutton, Charles W. Stearns, Kris Thielemans
2020 — conf
Deep learning-based model observers that replicate human observers for PET imaging.
Image Perception, Observer Performance, and Technology Assessment
Fenglei Fan, Sangtae Ahn, Bruno De Man, Kristen A. Wangerin, Scott D. Wollenweber, Craig K. Abbey, Paul E. Kinahan
2020 J jnl
Ergonomic Issues in Brain-Computer Interface Technologies: Current Status, Challenges, and Future Direction.
Comput. Intell. Neurosci.
Hyun Jae Baek, Hyun Seok Kim, Minkyu Ahn, Hohyun Cho, Sangtae Ahn
2019 J jnl
Conditional WGANs with Adaptive Gradient Balancing for Sparse MRI Reconstruction.
CoRR
Itzik Malkiel, Sangtae Ahn, Valentina Taviani, Anne Menini, Lior Wolf, Christopher J. Hardy
2019 J jnl
Targeting reduced neural oscillations in patients with schizophrenia by transcranial alternating current stimulation.
NeuroImage
Sangtae Ahn, Juliann M. Mellin, Sankaraleengam Alagapan, Morgan L. Alexander, John H. Gilmore, L. Fredrik Jarskog, Flavio Fröhlich
2018 J jnl
Fast Quasi-Newton Algorithms for Penalized Reconstruction in Emission Tomography and Further Improvements via Preconditioning.
IEEE Trans. Medical Imaging
Yu-Jung Tsai, Alexandre Bousse, Matthias J. Ehrhardt, Charles W. Stearns, Sangtae Ahn, Brian F. Hutton, Simon R. Arridge, Kris Thielemans
2012 — conf
Quantitatively accurate image reconstruction for clinical whole-body PET imaging.
APSIPA
Evren Asma, Sangtae Ahn, Hua Qian, Girishankar Gopalakrishnan, Kris Thielemans, Steven G. Ross, Ravindra M. Manjeshwar, Alexander Ganin
2011 — conf
How Much Features in Brain-Computer Interface Are Discriminative?- Quantitative Measure by Relative Entropy.
HCI (23)
Sangtae Ahn, Sungwook Kang, Sung Chan Jun
2011 J jnl
Optimal Rebinning of Time-of-Flight PET Data.
IEEE Trans. Medical Imaging
Sangtae Ahn, Sanghee Cho, Quanzheng Li, Yanguang Lin, Richard M. Leahy
2010 J jnl
A Poisson model for random multigraphs.
Bioinform.
John M. O. Ranola, Sangtae Ahn, Mary E. Sehl, Desmond J. Smith, Kenneth Lange
2009 J jnl
Directed Mammalian Gene Regulatory Networks Using Expression and Comparative Genomic Hybridization Microarray Data from Radiation Hybrids.
PLoS Comput. Biol.
Sangtae Ahn, Richard T. Wang, Christopher C. Park, Andy Lin, Richard M. Leahy, Kenneth Lange, Desmond J. Smith
2009 — conf
Optimal Illumination Patterns for Fluorescence Tomography.
ISBI
Joyita Dutta, Sangtae Ahn, Anand A. Joshi, Richard M. Leahy
2008 J jnl
Analysis of Resolution and Noise Properties of Nonquadratically Regularized Image Reconstruction Methods for PET.
IEEE Trans. Medical Imaging
Sangtae Ahn, Richard M. Leahy
2007 J jnl
A Fast Fully 4-D Incremental Gradient Reconstruction Algorithm for List Mode PET Data.
IEEE Trans. Medical Imaging
Quanzheng Li, Evren Asma, Sangtae Ahn, Richard M. Leahy
2007 — conf
Fast Image Reconstruction Methods for Fully 3d Multispectral Optical Bioluminescence Tomography.
ISBI
Sangtae Ahn, Abhijit J. Chaudhari, Felix Darvas, Charles A. Bouman, Richard M. Leahy
2007 J jnl
Iterative Image Reconstruction Using Inverse Fourier Rebinning for Fully 3-D PET.
IEEE Trans. Medical Imaging
Sanghee Cho, Quanzheng Li, Sangtae Ahn, Bing Bai, Richard M. Leahy
2006 J jnl
Convergent incremental optimization transfer algorithms: application to tomography.
IEEE Trans. Medical Imaging
Sangtae Ahn, Jeffrey A. Fessler, Doron Blatt, Alfred O. Hero III
2006 — conf
Spatial resolution properties of nonquadratically regularized image reconstruction for PET.
ISBI
Sangtae Ahn, Richard M. Leahy
2004 — conf
Covariance of Kinetic Parameter Estimators Based on Time Activity Curve Reconstructions: Preliminary Study on 1D Dynamic Imaging.
ISBI
Sangtae Ahn, Jeffrey A. Fessler, Thomas E. Nichols, Robert A. Koeppe
2004 J jnl
Emission image reconstruction for randoms-precorrected PET allowing negative sinogram values.
IEEE Trans. Medical Imaging
Sangtae Ahn, Jeffrey A. Fessler
2003 J jnl
A Globally Convergent Image Reconstruction for Emission Tomography Using Relaxed Ordered Subsets Algorithms.
IEEE Trans. Medical Imaging
Sangtae Ahn, Jeffrey A. Fessler
2002 — conf
Development of a Residential Gateway and a Service Server for Home Automation.
AISA
Jongkyu Park, Ilseok Han, Jinhyuck Kwon, June Hwang, Hagbae Kim, Sangtae Ahn, Whie Chang