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241 results on '"Kim, Hyungseok"'

1. Self-supervised Multidimensional Scaling with $F$-ratio: Improving Microbiome Visualization

Author

Kim, Hyungseok, Kim, Soobin, Morris, Megan M., Kimbrel, Jeffrey A., Mayali, Xavier, and Buie, Cullen R.

Subjects
Statistics - Applications, Quantitative Biology - Populations and Evolution
Abstract

Multidimensional scaling (MDS) is an unsupervised learning technique that preserves pairwise distances between observations and is commonly used for analyzing multivariate biological datasets. Recent advances in MDS have achieved successful classification results, but the configurations heavily depend on the choice of hyperparameters, limiting its broader application. Here, we present a self-supervised MDS approach informed by the dispersions of observations that share a common binary label ($F$-ratio). Our visualization accurately configures the $F$-ratio while consistently preserving the global structure with a low data distortion compared to existing dimensionality reduction tools. Using an algal microbiome dataset, we show that this new method better illustrates the community's response to the host, suggesting its potential impact on microbiology and ecology data analysis.

Published
2023

11. Effects of Different Proximity-Based Feedback on Virtual Hand Pointing in Virtual Reality

Author

Lu, Yujun, Gao, BoYu, Tu, Huawei, Luo, Weiqi, Kim, HyungSeok, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Magnenat-Thalmann, Nadia, editor, Interrante, Victoria, editor, Thalmann, Daniel, editor, Papagiannakis, George, editor, Sheng, Bin, editor, Kim, Jinman, editor, and Gavrilova, Marina, editor

Published
2021
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12. Semantic Modeling and Rendering

Author

Divya Udayan, J., Kim, HyungSeok, Tan, Desney, Editor-in-Chief, Vanderdonckt, Jean, Editor-in-Chief, Thalmann, Nadia Magnenat, editor, Zhang, Jian Jun, editor, Ramanathan, Manoj, editor, and Thalmann, Daniel, editor

Published
2021
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13. A Study on Usability and Security of Mid-Air Gesture-Based Locking System

Author

Gao, BoYu, Kim, HyungSeok, Divya Udayan, J., Kacprzyk, Janusz, Series Editor, Pal, Nikhil R., Advisory Editor, Bello Perez, Rafael, Advisory Editor, Corchado, Emilio S., Advisory Editor, Hagras, Hani, Advisory Editor, Kóczy, László T., Advisory Editor, Kreinovich, Vladik, Advisory Editor, Lin, Chin-Teng, Advisory Editor, Lu, Jie, Advisory Editor, Melin, Patricia, Advisory Editor, Nedjah, Nadia, Advisory Editor, Nguyen, Ngoc Thanh, Advisory Editor, Wang, Jun, Advisory Editor, Peter, J. Dinesh, editor, Alavi, Amir H., editor, and Javadi, Bahman, editor

Published
2019
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14. Spherical Layout with Proximity-Based Multimodal Feedback for Eyes-Free Target Acquisition in Virtual Reality

Author

Gao, BoYu, Lu, Yujun, Kim, HyungSeok, Kim, Byungmoon, Long, Jinyi, Hutchison, David, Editorial Board Member, Kanade, Takeo, Editorial Board Member, Kittler, Josef, Editorial Board Member, Kleinberg, Jon M., Editorial Board Member, Mattern, Friedemann, Editorial Board Member, Mitchell, John C., Editorial Board Member, Naor, Moni, Editorial Board Member, Pandu Rangan, C., Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Terzopoulos, Demetri, Editorial Board Member, Tygar, Doug, Editorial Board Member, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Chen, Jessie Y.C., editor, and Fragomeni, Gino, editor

Published
2019
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18. Reassembly is Hard: A Reflection on Challenges and Strategies

Author

Kim, Hyungseok

Abstract

We create our own benchmark with various combinations of compilers, linkers, target ISAs, and compiler options. Our benchmark is created by compiling three source packages totaling 122executable programs as follows. • GNU coreutils (v8.30): 107 executable programs • GNU binutils (v2.31.1): 15 executable programs. We consider all possible combinations of the following configurationsin order to produce assembly files and binaries with diverse assembly expression patterns. • ISA: x86 and x86-64 • Compilers: GCC v7.5.0 and Clang v12.0 • Linkers: GNU ld v2.30 and GNU gold v1.15 • PIE/non-PIE: produce a PIE or a non-PIE • Optimization: -O0, -O1, -O2, -O3, -Os, and -Ofast&nbsp

Published
2023
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22. Bacterial response to spatial gradients of algal-derived nutrients in a porous microplate

Author

Kim, Hyungseok, Kimbrel, Jeffrey A., Vaiana, Christopher A., Wollard, Jessica R., Mayali, Xavier, and Buie, Cullen R.

Abstract

Photosynthetic microalgae are responsible for 50% of the global atmospheric CO2fixation into organic matter and hold potential as a renewable bioenergy source. Their metabolic interactions with the surrounding microbial community (the algal microbiome) play critical roles in carbon cycling, but due to methodological limitations, it has been challenging to examine how community development is influenced by spatial proximity to their algal host. Here we introduce a copolymer-based porous microplate to co-culture algae and bacteria, where metabolites are constantly exchanged between the microorganisms while maintaining physical separation. In the microplate, we found that the diatom Phaeodactylum tricornutumaccumulated to cell abundances ~20 fold higher than under normal batch conditions due to constant replenishment of nutrients through the porous structure. We also demonstrate that algal-associated bacteria, both single isolates and complex communities, responded to inorganic nutrients away from their host as well as organic nutrients originating from the algae in a spatially predictable manner. These experimental findings coupled with a mathematical model suggest that host proximity and algal culture growth phase impact bacterial community development in a taxon-specific manner through organic and inorganic nutrient availability. Our novel system presents a useful tool to investigate universal metabolic interactions between microbes in aquatic ecosystems.

Published
2024
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33. A Steerable Tangible Interface and Its Evaluation

Author

Kim, WooHyeon, Lee, Jun, Kim, HyungSeok, Lim, MinGyu, Kim, Jee-In, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Yu, Zhiwen, editor, Liscano, Ramiro, editor, Chen, Guanling, editor, Zhang, Daqing, editor, and Zhou, Xingshe, editor

Published
2010
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34. AirScope: A Micro-scale Urban Air Quality Management System

Author

Woo, Jung-Hun, Kim, HyungSeok, Lim, Sang Boem, Kim, Jae-Jin, Lee, Jonghyun, Ryoo, Rina, Kim, Hansoo, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Hsu, Ching-Hsien, editor, Yang, Laurence T., editor, Park, Jong Hyuk, editor, and Yeo, Sang-Soo, editor

Published
2010
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36. An Immersive Motion Interface with Edutainment Contents for Elderly People

Author

Kim, HyungSeok, Roh, YoungTae, Kim, Jee-In, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Egges, Arjan, editor, Kamphuis, Arno, editor, and Overmars, Mark, editor

Published
2008
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37. Gesture-Based Interactions on Multiple Large Displays with a Tabletop Interface

Author

Lee, Jangho, Lee, Jun, Kim, HyungSeok, Kim, Jee-In, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, and Stephanidis, Constantine, editor

Published
2007
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38. Animation Preserving Simplification for MPEG Based Scalable Virtual Human

Author

Kim, HyungSeok, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Dough, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Pan, Zhigeng, editor, Cheok, Adrian, editor, Haller, Michael, editor, Lau, Rynson W. H., editor, Saito, Hideo, editor, and Liang, Ronghua, editor

Published
2006
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39. Personalized Content Presentation for Virtual Gallery

Author

Kim, Wonil, Lee, Hanku, Yoon, Kyoungro, Kim, Hyungseok, Jung, Changduk, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Dough, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Pan, Zhigeng, editor, Cheok, Adrian, editor, Haller, Michael, editor, Lau, Rynson W. H., editor, Saito, Hideo, editor, and Liang, Ronghua, editor

Published
2006
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44. Deep learning‐based diagnosis of stifle joint diseases in dogs.

Author

Shim, Hyesoo, Lee, Jongmo, Choi, Seunghoon, Kim, Jayon, Jeong, Jeongyun, Cho, Changhyun, Kim, Hyungseok, Kim, Jee‐in, Kim, Jaehwan, and Eom, Kidong

Abstract

In this retrospective, analytical study, we developed a deep learning‐based diagnostic model that can be applied to canine stifle joint diseases and compared its accuracy with that achieved by veterinarians to verify its potential as a reliable diagnostic method. A total of 2382 radiographs of the canine stifle joint from cooperative animal hospitals were included in a dataset. Stifle joint regions were extracted from the original images using the faster region‐based convolutional neural network (R‐CNN) model, and the object detection accuracy was evaluated. Four radiographic findings: patellar deviation, drawer sign, osteophyte formation, and joint effusion, were observed in the stifle joint and used to train a residual network (ResNet) classification model. Implant and growth plate groups were analyzed to compare the classification accuracy against the total dataset. All deep learning‐based classification models achieved target accuracies exceeding 80%, which is comparable to or slightly less than those achieved by veterinarians. However, in the case of drawer signs, further research is necessary to improve the low sensitivity of the model. When the implant group was excluded, the classification accuracy significantly improved, indicating that the implant acted as a distraction. These results indicate that deep learning‐based diagnoses can be expected to become useful diagnostic models in veterinary medicine. [ABSTRACT FROM AUTHOR]

Published
2023
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48. Machine Learning-Assisted Lateral Flow Assay for Detecting COVID-19 and Influenza

Author

Lee, Seungmin, primary, Yoo, Yong Kyoung, additional, Kim, Cheonjung, additional, Lee, Na Eun, additional, Kim, Kang Hyeon, additional, Kim, Hyungseok, additional, Lee, Dongtak, additional, Han, Sung Il, additional, Lee, Dongho, additional, Cho, Sung-Yeon, additional, Park, Chulmin, additional, Yoon, Dae Sung, additional, and Lee, Jeong Hoon, additional

Published
2022
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