Nakjung Choi - RankMe

111 papers A* 6A 4B 21C 2Misc 1Journal 40Unranked 37

Year	Rank	Type	Title / Venue / Authors
2026	J	`jnl`	Flat UP: A Converged RAN-Core Architecture for the 6G User Plane. IEEE Trans. Netw. Serv. Manag. Hasanin Harkous, Ahan Kak, Alistair Urie, Heiko Straulino, Huanzhuo Wu, Huu-Trung Thieu, Nakjung Choi
2026	J	`jnl`	inRAN: Interpretable Online Bayesian Learning for Network Automation in Open Radio Access Networks. CoRR Ming Zhao, Yuru Zhang, Qiang Liu, Ahan Kak, Nakjung Choi
2026	J	`jnl`	oneTwin: Online Digital Network Twin via Neural Radio Radiance Field. CoRR Yuru Zhang, Ming Zhao, Qiang Liu, Nakjung Choi
2025	A*	`conf`	AdaSlicing: Adaptive Online Network Slicing Under Continual Network Dynamics in Open Radio Access Networks. INFOCOM Ming Zhao, Yuru Zhang, Qiang Liu, Ahan Kak, Nakjung Choi
2025	J	`jnl`	AdaSlicing: Adaptive Online Network Slicing under Continual Network Dynamics in Open Radio Access Networks. CoRR Ming Zhao, Yuru Zhang, Qiang Liu, Ahan Kak, Nakjung Choi
2025	—	`conf`	Demonstration of Automated ML-Driven Energy-Efficient Spectrum Defragmentation for Optical Transport Networks. OFC Van-Quan Pham, Huu-Trung Thieu, Kody Deng, Nakjung Choi
2025	J	`jnl`	Flat UP: Toward RAN-Core Convergence for the 6G User Plane. IEEE Commun. Mag. Hasanin Harkous, Ahan Kak, Alistair Urie, Heiko Straulino, Huanzhuo Wu, Matti Laitila, Huu-Trung Thieu, Nakjung Choi, Thierry Van De Velde, Mikko Kanerva
2025	J	`jnl`	HexRAN: A Programmable Approach to Open RAN Base Station System Design. IEEE Trans. Netw. Serv. Manag. Ahan Kak, Van-Quan Pham, Huu-Trung Thieu, Nakjung Choi
2025	—	`conf`	InSlicing: Interpretable Learning-Assisted Network Slice Configuration in Open Radio Access Networks. INFOCOM WKSHPS Ming Zhao, Yuru Zhang, Qiang Liu, Ahan Kak, Nakjung Choi
2025	J	`jnl`	InSlicing: Interpretable Learning-Assisted Network Slice Configuration in Open Radio Access Networks. CoRR Ming Zhao, Yuru Zhang, Qiang Liu, Ahan Kak, Nakjung Choi
2025	B	`conf`	Odin: Effective End-to-End SLA Decomposition for 5G/6G Network Slicing via Online Learning. MobiHoc Duo Cheng, Ramanujan K. Sheshadri, Ahan Kak, Nakjung Choi, Xingyu Zhou, Bo Ji
2025	J	`jnl`	Odin: Effective End-to-End SLA Decomposition for 5G/6G Network Slicing via Online Learning. CoRR Duo Cheng, Ramanujan K. Sheshadri, Ahan Kak, Nakjung Choi, Xingyu Zhou, Bo Ji
2025	—	`conf`	RAN-SURE: Toward Sustainable RAN Orchestration. WiNTECH Van-Quan Pham, Ahan Kak, Huu-Trung Thieu, Nakjung Choi
2025	A	`conf`	S2M3: Split-and-Share Multi-Modal Models for Distributed Multi-Task Inference on the Edge. ICDCS JinYi Yoon, Jiho Lee, Ting He, Nakjung Choi, Bo Ji
2025	J	`jnl`	S2M3: Split-and-Share Multi-Modal Models for Distributed Multi-Task Inference on the Edge. CoRR JinYi Yoon, Jiho Lee, Ting He, Nakjung Choi, Bo Ji
2024	J	`jnl`	BPS: Batching, Pipelining, Surgeon of Continuous Deep Inference on Collaborative Edge Intelligence. IEEE Trans. Cloud Comput. Xueyu Hou, Yongjie Guan, Nakjung Choi, Tao Han
2024	—	`conf`	Demonstration of a Compositional Learning Framework for Open and Disaggregated Optical Network Control. OFC Huy Quang Tran, Javier Errea, Huu-Trung Thieu, Quan Pham-Van, Nakjung Choi, Dominique Verchère, Adlen Ksentini, Djamal Zeghlache
2024	—	`conf`	INTEGRan: Towards Vertical and Horizontal Integration for Programmable RAN Performance Optimization. INFOCOM (Workshops) Ahan Kak, Van-Quan Pham, Huu-Trung Thieu, Ramanujan K. Sheshadri, Nakjung Choi
2024	—	`conf`	Learn to Augment Network Simulators Towards Digital Network Twins. INFOCOM (Workshops) Yuru Zhang, Ming Zhao, Qiang Liu, Nakjung Choi
2024	A*	`conf`	Learning-Augmented Online Algorithm for Two-Level Ski-Rental Problem. AAAI Keyuan Zhang, Zhongdong Liu, Nakjung Choi, Bo Ji
2024	J	`jnl`	Learning-augmented Online Algorithm for Two-level Ski-rental Problem. CoRR Keyuan Zhang, Zhongdong Liu, Nakjung Choi, Bo Ji
2024	—	`conf`	ORCA: Cloud-native Orchestration and Automation of E2E Cellular Network Functions and Slices. INFOCOM (Workshops) Van-Quan Pham, Ahan Kak, Huu-Trung Thieu, Nakjung Choi
2024	B	`conf`	PSASlicing: Perpetual SLA-Aware Reinforcement Learning for O-RAN Slice Management. GLOBECOM Mingrui Yin, Yang Deng, Ahan Kak, Nakjung Choi, Tao Han
2024	A*	`conf`	TinyRIC-ML: A Lightweight Real Time ML Platform for O-RAN. MobiCom Thanuskanth Thangavadivel, Gopalasingham Aravinthan, Van-Quan Pham, Ahan Kak, Huu-Trung Thieu, Nakjung Choi
2024	J	`jnl`	Toward Single Occupant Activity Recognition for Long-Term Periods via Channel State Information. IEEE Internet Things J. Hoonyong Lee, Changbum Ryan Ahn, Nakjung Choi
2023	—	`conf`	A First Look at Wi-Fi 6 in Action: Throughput, Latency, Energy Efficiency, and Security. SIGMETRICS (Abstracts) Ruofeng Liu, Nakjung Choi
2023	J	`jnl`	A First Look at Wi-Fi 6 in Action: Throughput, Latency, Energy Efficiency, and Security. Proc. ACM Meas. Anal. Comput. Syst. Ruofeng Liu, Nakjung Choi
2023	—	`conf`	AweRAN: Making a Case for Application-aware Radio Access Network Slicing. WiNTECH Ahan Kak, Huu-Trung Thieu, Van-Quan Pham, Ramanujan K. Sheshadri, Nakjung Choi, Yongjie Guan, Mingrui Yin, Tao Han
2023	J	`jnl`	Deep Reinforcement Learning for End-to-End Network Slicing: Challenges and Solutions. IEEE Netw. Qiang Liu, Nakjung Choi, Tao Han
2023	—	`conf`	Demystifying the Near-real Time RIC: Architecture, Operations, and Benchmarking Insights. INFOCOM Workshops Huu-Trung Thieu, Van-Quan Pham, Ahan Kak, Nakjung Choi
2023	B	`conf`	Distributional-Utility Actor-Critic for Network Slice Performance Guarantee. MobiHoc Jingdi Chen, Tian Lan, Nakjung Choi
2023	J	`jnl`	HexRAN: A Programmable Multi-RAT Platform for Network Slicing in the Open RAN Ecosystem. CoRR Ahan Kak, Van-Quan Pham, Huu-Trung Thieu, Nakjung Choi
2023	Misc	`conf`	HexRIC: Building a Better near-Real Time Network Controller for the Open RAN Ecosystem. HotMobile Van-Quan Pham, Huu-Trung Thieu, Ahan Kak, Nakjung Choi
2023	—	`conf`	Poster: Digital Network Twin via Learning-Based Simulator. INFOCOM Workshops Yuru Zhang, Yongjie Xue, Qiang Liu, Nakjung Choi
2023	B	`conf`	RANSight: Programmable Telemetry for Next-Generation Open Radio Access Networks. GLOBECOM Ahan Kak, Van-Quan Pham, Huu-Trung Thieu, Nakjung Choi
2023	—	`conf`	RoNet: Toward Robust Neural Assisted Mobile Network Configuration. ICC Yuru Zhang, Yongjie Xue, Qiang Liu, Nakjung Choi, Tao Han
2023	J	`jnl`	RoNet: Toward Robust Neural Assisted Mobile Network Configuration. CoRR Yuru Zhang, Yongjie Xue, Qiang Liu, Nakjung Choi, Tao Han
2023	A*	`conf`	TinyRIC: Supercharging O-RAN Base Stations with Real-time Control. MobiCom Chang Liu, Gopalasingham Aravinthan, Ahan Kak, Nakjung Choi
2023	—	`conf`	Towards a Scalable 5G RAN Central Unit. INFOCOM Workshops Cuidi Wei, Ahan Kak, Nakjung Choi, Timothy Wood
2022	—	`conf`	5GPerf: profiling open source 5G RAN components under different architectural deployments. 5G-MeMZ@SIGCOMM Cuidi Wei, Ahan Kak, Nakjung Choi, Timothy Wood
2022	J	`jnl`	Atlas: Automate Online Service Configuration in Network Slicing. CoRR Qiang Liu, Nakjung Choi, Tao Han
2022	A	`conf`	Atlas: automate online service configuration in network slicing. CoNEXT Qiang Liu, Nakjung Choi, Tao Han
2022	J	`jnl`	Deep Reinforcement Learning for End-to-End Network Slicing: Challenges and Solutions. CoRR Qiang Liu, Nakjung Choi, Tao Han
2022	—	`conf`	Demo: A Disaggregated O-RAN Platform for Network Slice Deployment and Assurance. INFOCOM Workshops Ahan Kak, Van-Quan Pham, Huu-Trung Thieu, Nakjung Choi
2022	B	`conf`	Poster: Multi-RAT Network Slicing in the Open RAN Era. ICNP Ahan Kak, Van-Quan Pham, Huu-Trung Thieu, Nakjung Choi
2022	B	`conf`	ProSLICE: An Open RAN-based approach to Programmable RAN Slicing. GLOBECOM Ahan Kak, Van-Quan Pham, Huu-Trung Thieu, Nakjung Choi
2022	J	`jnl`	Regenerative Particle Thompson Sampling. CoRR Zeyu Zhou, Bruce E. Hajek, Nakjung Choi, Anwar Walid
2021	—	`conf`	A SmartNIC-based Load Balancing and Auto Scaling Framework for Middlebox Edge Server. NFV-SDN Zhen Ni, Cuidi Wei, Timothy Wood, Nakjung Choi
2021	B	`conf`	Constraint-Aware Deep Reinforcement Learning for End-to-End Resource Orchestration in Mobile Networks. ICNP Qiang Liu, Nakjung Choi, Tao Han
2021	J	`jnl`	Constraint-Aware Deep Reinforcement Learning for End-to-End Resource Orchestration in Mobile Networks. CoRR Qiang Liu, Nakjung Choi, Tao Han
2021	B	`conf`	FestNet: A Flexible and Efficient Sliced Transport Network. NetSoft Hao Jiang, Nakjung Choi, Marina Thottan, Jacobus E. van der Merwe
2021	J	`jnl`	OnSlicing: Online End-to-End Network Slicing with Reinforcement Learning. CoRR Qiang Liu, Nakjung Choi, Tao Han
2021	A	`conf`	OnSlicing: online end-to-end network slicing with reinforcement learning. CoNEXT Qiang Liu, Nakjung Choi, Tao Han
2020	B	`conf`	Applying Machine Learning to End-to-end Slice SLA Decomposition. NetSoft Michael Iannelli, Muntasir Raihan Rahman, Nakjung Choi, Le Wang
2020	J	`jnl`	Economics of Fog Computing: Interplay Among Infrastructure and Service Providers, Users, and Edge Resource Owners. IEEE Trans. Mob. Comput. Daewoo Kim, Hyojung Lee, HyungSeok Song, Nakjung Choi, Yung Yi
2020	J	`jnl`	Fine-grained occupant activity monitoring with Wi-Fi channel state information: Practical implementation of multiple receiver settings. Adv. Eng. Informatics Hoonyong Lee, Changbum R. Ahn, Nakjung Choi
2020	A*	`conf`	Network Slicing in Heterogeneous Software-defined RANs. INFOCOM Qiaofeng Qin, Nakjung Choi, Muntasir Raihan Rahman, Marina Thottan, Leandros Tassiulas
2020	—	`conf`	The Impacts of CSI Temporal Variations on CSI-based Occupancy Monitoring Systems: An Exploratory Study. BuildSys Hoonyong Lee, Changbum Ryan Ahn, Nakjung Choi
2019	—	`conf`	A First Step Towards Production-Ready Network Function Storage: Benchmarking with NFSB. Sarnoff Symposium Haochen Pan, Yingjian Wu, Lewis Tseng, Muntasir Raihan Rahman, Nakjung Choi
2019	B	`conf`	A Reinforcement Learning Approach for Online Service Tree Placement in Edge Computing. ICNP Yimeng Wang, Yongbo Li, Tian Lan, Nakjung Choi
2019	—	`conf`	Exploiting Multiple Receivers for CSI-Based Activity Classification Using A Hybrid CNN-LSTM Model. DFHS@BuildSys Hoonyong Lee, Changbum Ryan Ahn, Nakjung Choi
2019	—	`conf`	Exploiting Multiple Receivers for CSI-Based Activity Classification Using A Hybrid CNN-LSTM Model. BuildSys Hoonyong Lee, Changbum Ryan Ahn, Nakjung Choi
2019	B	`conf`	Run-time Performance Monitoring, Verification, and Healing of End-to-End Services. NetSoft Nakjung Choi, Lalita Jagadeesan, Young Jin, Nishok Narasimha Mohanasamy, Muntasir Raihan Rahman, Krishan K. Sabnani, Marina Thottan
2019	J	`jnl`	The Effects of Housing Environments on the Performance of Activity-Recognition Systems Using Wi-Fi Channel State Information: An Exploratory Study. Sensors Hoonyong Lee, Changbum R. Ahn, Nakjung Choi, Toseung Kim, Hyunsoo Lee
2019	J	`jnl`	The network OS: Carrier-grade SDN control of multi-domain, multi-layer networks. Bell Labs Tech. J. Marina Thottan, Catello Di Martino, Young-Jin Kim, Gary W. Atkinson, Nakjung Choi, Nishok Mohanasamy, Lalita Jagadeesan, Veena B. Mendiratta, Jesse E. Simsarian, Bartek Kozicki
2018	—	`conf`	Cross-layer Aware Packet-Optical Link Management in Software-Defined Network Operating System. OFC Young-Jin Kim, Jesse E. Simsarian, Nakjung Choi, Nishok Narasimha Mohanasamy, Marina Thottan
2018	J	`jnl`	Error Awareness in a Multi-Layer Transport Network Operating System. JOCN Jesse E. Simsarian, Young-Jin Kim, Nakjung Choi, Catello Di Martino, Nishok Narasimha Mohanasamy, Peter J. Winzer, Marina Thottan
2018	—	`conf`	On the Economics of Fog Computing: Inter-Play among Infrastructure and Service Providers, Users, and Edge Resource Owners. ICC Daewoo Kim, Hyojung Lee, HyungSeok Song, Nakjung Choi, Yung Yi
2017	J	`jnl`	A Fog Operating System for User-Oriented IoT Services: Challenges and Research Directions. IEEE Commun. Mag. Nakjung Choi, Daewoo Kim, Sung-Ju Lee, Yung Yi
2017	B	`conf`	SIMECA: SDN-based IoT Mobile Edge Cloud Architecture. IM Binh Nguyen, Nakjung Choi, Marina Thottan, Jacobus E. van der Merwe
2016	—	`conf`	NetGraph data model applied to multilayer carrier networks. OFC Jesse E. Simsarian, Nakjung Choi, Young-Jin Kim, Steve Fortune, Marina Thottan
2016	J	`jnl`	RA-PSM: a rate-aware power saving mechanism in multi-rate wireless LANs. Wirel. Networks Sangheon Pack, Seongman Min, Taewon Song, Wonjung Kim, Nakjung Choi, Hyunhee Park
2015	—	`conf`	Joint content-resource allocation in software defined virtual CDNs. ICC Workshops Jaime Llorca, Claudio Sterle, Antonia M. Tulino, Nakjung Choi, Antonio Sforza, Annunziata Esposito Amideo
2014	—	`conf`	A statistical approach to smooth video quality adaptation in IEEE 802.11 wireless LANs. ICTC Nakjung Choi, Jeongran Lee, Gwangsu Kim
2014	J	`jnl`	A target-centric surveillance system based on localization and social networking. Multim. Tools Appl. Jinyoung Han, Nakjung Choi, Taejoong Chung, Ted Taekyoung Kwon, Yanghee Choi
2014	—	`conf`	C-flow: An efficient content delivery framework with OpenFlow. ICOIN Dukhyun Chang, Myungchul Kwak, Nakjung Choi, Ted Taekyoung Kwon, Yanghee Choi
2014	—	`conf`	CoRC: coordinated routing and caching for named data networking. ANCS Hoon-gyu Choi, Jungmin Yoo, Taejoong Chung, Nakjung Choi, Taekyoung Kwon, Yanghee Choi
2014	J	`jnl`	Container-based unified testbed for information-centric networking. IEEE Netw. Hitoshi Asaeda, Ruidong Li, Nakjung Choi
2014	J	`jnl`	Deadline and Incast Aware TCP for cloud data center networks. Comput. Networks Jaehyun Hwang, Joon Yoo, Nakjung Choi
2014	J	`jnl`	HAVS: hybrid adaptive video streaming for mobile devices. IEEE Trans. Consumer Electron. Jaehyun Hwang, Junghwan Lee, Nakjung Choi, Chuck Yoo
2014	C	`conf`	SVC-based hybrid video streaming in mobile CE devices. ICCE Jaehyun Hwang, Nakjung Choi, Junghwan Lee, Chuck Yoo
2014	C	`conf`	Scalable and energy efficient WiFi management. ICCE Nakjung Choi, Jeongran Lee, Jaehyun Hwang
2013	A*	`conf`	Dynamic in-network caching for energy efficient content delivery. INFOCOM Jaime Llorca, Antonia M. Tulino, Kyle Guan, Jairo O. Esteban, Matteo Varvello, Nakjung Choi, Daniel C. Kilper
2013	J	`jnl`	Exploiting Multi-User Diversity for Uplink Throughput in IEEE 802.11 WLANs. IEEE Commun. Lett. Nakjung Choi, Yongho Seok, Taekyoung Kwon
2013	J	`jnl`	SVC-based Adaptive Video Streaming over Content-Centric Networking. KSII Trans. Internet Inf. Syst. Junghwan Lee, Jaehyun Hwang, Nakjung Choi, Chuck Yoo
2013	B	`conf`	Spatial and Temporal Locality of Swarm Dynamics in BitTorrent. PAM Taejoong Chung, Jinyoung Han, Hojin Lee, Ted Taekyoung Kwon, Yanghee Choi, Nakjung Choi
2012	J	`jnl`	A probabilistic and opportunistic flooding algorithm in wireless sensor networks. Comput. Commun. Dukhyun Chang, Kideok Cho, Nakjung Choi, Ted Taekyoung Kwon, Yanghee Choi
2012	J	`jnl`	An iterative analysis of single-hop B-MAC networks under Poisson traffic. J. Commun. Networks Sung-Hwan Jung, Nakjung Choi, Taekyoung Kwon
2012	—	`conf`	IA-TCP: A rate based incast-avoidance algorithm for TCP in data center networks. ICC Jaehyun Hwang, Joon Yoo, Nakjung Choi
2012	—	`conf`	In-network caching effect on optimal energy consumption in content-centric networking. ICC Nakjung Choi, Kyle Guan, Daniel C. Kilper, Gary Atkinson
2011	B	`conf`	A SNR-based admission control scheme in WLAN-based vehicular networks. IWCMC Kihun Kim, Younghyun Kim, Sangheon Pack, Nakjung Choi
2011	A	`conf`	A surveillance system based on social networking and localization. ICME Wonyoung Kwak, Jinyoung Han, Nakjung Choi, Ted Taekyoung Kwon, Yanghee Choi
2011	J	`jnl`	An SNR-based admission control scheme in WiFi-based vehicular networks. EURASIP J. Wirel. Commun. Netw. Kihun Kim, Younghyun Kim, Sangheon Pack, Nakjung Choi
2011	J	`jnl`	Multicasting multimedia streams in IEEE 802.11 networks: a focus on reliability and rate adaptation. Wirel. Networks Nakjung Choi, Yongho Seok, Taekyoung Kwon, Yanghee Choi
2010	—	`conf`	Leader-Based Multicast Service in IEEE 802.11v Networks. CCNC Nakjung Choi, Yongho Seok, Taekyoung Kwon, Yanghee Choi
2009	—	`conf`	Regional token based routing for DTNs. ICOIN Choongho Lee, Dukhyun Chang, Yoonbo Shim, Nakjung Choi, Taekyoung Kwon, Yanghee Choi
2007	J	`jnl`	A Transparent Failover Mechanism for a Mobile Network with Multiple Mobile Routers. IEEE Commun. Lett. Nakjung Choi, Jiho Ryu, Eun Kyoung Paik, Taekyoung Kwon, Yanghee Choi
2007	—	`conf`	An Efficient Address Assignment Mechanism for Mobile Ad-Hoc Networks. ICOIN Uhjin Joung, Dongkyun Kim, Nakjung Choi, Chai-Keong Toh
2007	—	`conf`	Half Direct-Link Setup (H-DLS) for Fairness between External and Local TCP Connections in IEEE 802.11e Wireless LANs. ICC Nakjung Choi, Yongho Seok, Yanghee Choi, Taekyoung Kwon
2007	B	`conf`	Leader-Based Rate Adaptive Multicasting for Wireless LANs. GLOBECOM Sungjoon Choi, Nakjung Choi, Yongho Seok, Taekyoung Kwon, Yanghee Choi
2007	B	`conf`	Macro-Level and Micro-Level Routing (MMR) for Urban Vehicular Ad Hoc Networks. GLOBECOM Youndo Lee, Hojin Lee, Nakjung Choi, Yanghee Choi, Taekyoung Kwon
2007	B	`conf`	Optimizing Aggregate Throughput of Upstream TCP Flows over IEEE 802.11 Wireless LANs. PIMRC Nakjung Choi, Jiho Ryu, Yongho Seok, Taekyoung Kwon, Yanghee Choi
2006	—	`conf`	Augmented Split-TCP over Wireless LANs. ICC Hakyung Jung, Nakjung Choi, Yongho Seok, Taekyoung Kwon, Yanghee Choi
2006	B	`conf`	Hybrid Distributed Coordination Function for Next-Generation High-Bandwidth WLANs. LCN Nakjung Choi, Seongil Han, Yongho Seok, Yanghee Choi, Taekyoung Kwon
2006	—	`conf`	Rate-adaptive multimedia multicasting over IEEE 802.11 wireless LANs. CCNC Youngsam Park, Yongho Seok, Nakjung Choi, Yanghee Choi, Jean-Marie Bonnin
2006	J	`jnl`	S-EDCA: EDCA based on SuperSlot and Pseudo Collision. ACM SIGMOBILE Mob. Comput. Commun. Rev. Jiho Ryu, Yongho Seok, Nakjung Choi, Taekyoung Kwon, Yanghee Choi
2006	—	`conf`	Unicast-friendly multicast in IEEE 802.11 wireless LANs. CCNC Nakjung Choi, Jiho Ryu, Yongho Seok, Yanghee Choi, Ted Taekyoung Kwon
2005	—	`conf`	Optimal Multi-sink Positioning and Energy-Efficient Routing in Wireless Sensor Networks. ICOIN Haeyong Kim, Yongho Seok, Nakjung Choi, Yanghee Choi, Taekyoung Kwon
2005	B	`conf`	Random and linear address allocation for mobile ad hoc networks. WCNC Nakjung Choi, Chai-Keong Toh, Yongho Seok, Dongkyun Kim, Yanghee Choi
2004	B	`conf`	WISE: energy-efficient interface selection on vertical handoff between 3G networks and WLANs. PIMRC Minji Nam, Nakjung Choi, Yongho Seok, Yanghee Choi
2003	B	`conf`	Application-driven network capacity adaptation for energy efficient ad-hoc networks. PIMRC Yongho Seok, Nakjung Choi, Yanghee Choi, Jihong Kim