no code implementations • 28 May 2024 • Andrew H. Lee, Sina J. Semnani, Galo Castillo-López, Gäel de Chalendar, Monojit Choudhury, Ashna Dua, Kapil Rajesh Kavitha, Sungkyun Kim, Prashant Kodali, Ponnurangam Kumaraguru, Alexis Lombard, Mehrad Moradshahi, Gihyun Park, Nasredine Semmar, Jiwon Seo, Tianhao Shen, Manish Shrivastava, Deyi Xiong, Monica S. Lam
However, after manual evaluation of the validation set, we find that by correcting gold label errors and improving dataset annotation schema, GPT-4 with our prompts can achieve (1) 89. 6%-96. 8% accuracy in DST, and (2) more than 99% correct response generation across different languages.
no code implementations • 15 Mar 2024 • Hyungjun Oh, Kihong Kim, JaeMin Kim, Sungkyun Kim, Junyeol Lee, Du-Seong Chang, Jiwon Seo
This paper presents ExeGPT, a distributed system designed for constraint-aware LLM inference.
no code implementations • 15 Dec 2023 • Sunghwa Lee, Younghoon Shin, Myungjong Kim, Jiwon Seo
This study demonstrated IR-UWB radar-based contactless SSR using four types of speech stimuli (vowels, consonants, words, and phrases).
1 code implementation • 30 Jun 2023 • Mehrad Moradshahi, Tianhao Shen, Kalika Bali, Monojit Choudhury, Gaël de Chalendar, Anmol Goel, Sungkyun Kim, Prashant Kodali, Ponnurangam Kumaraguru, Nasredine Semmar, Sina J. Semnani, Jiwon Seo, Vivek Seshadri, Manish Shrivastava, Michael Sun, Aditya Yadavalli, Chaobin You, Deyi Xiong, Monica S. Lam
We create a new multilingual benchmark, X-RiSAWOZ, by translating the Chinese RiSAWOZ to 4 languages: English, French, Hindi, Korean; and a code-mixed English-Hindi language.
no code implementations • 1 Jun 2023 • Woohyun Kim, Jiwon Seo
Since those errors are within the coverage of each deployed simulator, it is confirmed that the proposed system with wireless clock synchronization can effectively provide periodic position updates to users where live-sky GNSS signals are unavailable.
no code implementations • 6 May 2023 • Sanghyun Kim, Jiwon Seo
Consequently, when the testing dataset was collected at different locations from the training dataset, a classification accuracy of 64. 47% was obtained, which was slightly higher than the accuracy of the existing method using dual single-polarized antennas.
no code implementations • 24 Apr 2023 • Halim Lee, Jiwon Seo
The average code computation time of the grid search was extremely large compared with those of the other two algorithms, and gradient descent exhibited the lowest computation time.
no code implementations • 6 Mar 2023 • Kang Choi, Donghyun Son, Younghoon Kim, Jiwon Seo
To understand and debug convolutional neural networks (CNNs) we propose techniques for testing the channels of CNNs.
no code implementations • 23 Feb 2023 • Halim Lee, Jiwon Seo
The two popular trajectory optimization strategies of UAVs are greedy and predictive approaches.
no code implementations • 19 Jun 2022 • Halim Lee, Taewon Kang, Suhui Jeong, Jiwon Seo
Further, a maximum likelihood problem for target localization combining RF fingerprinting is formulated.
no code implementations • 9 Jun 2022 • Yongjun Lee, Yoola Hwang, Jae Young Ahn, Jiwon Seo, Byungwoon Park
Despite the wide usage of the GNSS in populated urban areas, it is difficult to suggest a generalized method because multipath errors are user-specific errors that cannot be eliminated by the DGNSS or a real-time kinematic technique.
no code implementations • 6 Jun 2022 • Halim Lee, Jiwon Seo, Zaher M. Kassas
From a GNSS-based navigation perspective, the reliability of GNSS signals in different locales, which is heavily dependent on the road layout within the surrounding environment, is crucial to ensure safe automated driving.
no code implementations • 3 Nov 2021 • Halim Lee, Sam Pullen, Jiyun Lee, Byungwoon Park, Moonseok Yoon, Jiwon Seo
Ground-based Augmentation System (GBAS) augments Global Navigation Satellite Systems (GNSS) to support the precision approach and landing of aircraft.
no code implementations • 1 Nov 2021 • Sunghwa Lee, Euiho Kim, Jiwon Seo
The Stretched-FrOnt-Leg (SFOL) pulse is a high-accuracy distance measuring equipment (DME) pulse developed to support alternative positioning and navigation for aircraft during global navigation satellite system outages.
no code implementations • 3 Oct 2021 • Hyungjun Oh, Hyeongju Kim, Jiwon Seo
In data-parallel training, we reorder the gradient computations to maximize the overlapping of computation and parameter communication; in pipeline-parallel training, we prioritize critical gradient computations to reduce the pipeline stalls. We evaluate our optimizations with twelve neural networks including a light-weight computer vision model (MobileNet) and largeNLP models (BERT and GPT-3) with up to forty eight V100 GPUs. Our scheduling algorithms effectively improve the performance of single-GPU training as well as data- and pipeline-parallel training. Compared to the respective state of the art training systems, the throughput is substantially improved for single-GPU, data-parallel, and pipeline-parallel training.
no code implementations • 18 Sep 2021 • Woohyun Kim, Pyo-Woong Son, Sul Gee Park, Sang Hyun Park, Jiwon Seo
This letter briefly summarizes the efforts of South Korea to deploy an enhanced long-range navigation (eLoran) system, which is a terrestrial low-frequency radio navigation system that can complement GNSSs.
no code implementations • 13 Aug 2021 • Joon Hyo Rhee, Sanghyun Kim, Pyo-Woong Son, Jiwon Seo
Once its operational performance is determined to be satisfactory, South Korea plans to move to the second phase of the program, which is a nationwide eLoran system.
no code implementations • 13 Oct 2020 • Kwansik Park, Jiwon Seo
To reduce the computational complexity of the constraint matrix approach, the eigenvector constraint design scheme is adopted.
no code implementations • 8 Oct 2020 • Halim Lee, Jiwon Seo, Zaher M. Kassas
An integrity-based path planning strategy for autonomous ground vehicle (AGV) navigation in urban environments is developed.
no code implementations • 24 Sep 2020 • Taewon Kang, Jiwon Seo
This paper proposed a multiwall path-loss propagation model for an indoor environment, operating at a transmission frequency of 2. 45 GHz in the industrial, scientific, and medical (ISM) radio band.
no code implementations • 24 Sep 2020 • Kwansik Park, Woohyun Kim, Jiwon Seo
Global Positioning System (GPS) and inertial measurement unit (IMU) sensors are commonly integrated using the extended Kalman filter (EKF), for achieving better navigation performance.
no code implementations • 24 Sep 2020 • Jongmin Park, Pyo-Woong Son, Woohyun Kim, Joon Hyo Rhee, Jiwon Seo
The widely used global navigation satellite systems (GNSSs) are vulnerable to radio frequency interference (RFI).
no code implementations • 24 Sep 2020 • Halim Lee, Ali A. Abdallah, Jongmin Park, Jiwon Seo, Zaher M. Kassas
The results show a receiver navigating for 100 m in an indoor environment, while receiving signals from one LTE eNodeB.
no code implementations • 24 Sep 2020 • Halim Lee, Jiwon Seo
Alternative navigation technology to global navigation satellite systems (GNSSs) is required for unmanned ground vehicles (UGVs) in multipath environments (such as urban areas).
no code implementations • 24 Sep 2020 • Suhui Jeong, Halim Lee, Taewon Kang, Jiwon Seo
In this paper, we suggest a method of RSS-based LTE base station (BS) localization with a single mobile receiver when the PLE is unknown.
no code implementations • 24 Sep 2020 • Sanghyun Kim, Jongmin Park, Jae-Kwan Yun, Jiwon Seo
In this study, we applied reinforcement learning based on the proximal policy optimization algorithm to perform motion planning for an unmanned aerial vehicle (UAV) in an open space with static obstacles.
no code implementations • 24 Sep 2020 • Woohyun Kim, Pyo-Woong Son, Joon Hyo Rhee, Jiwon Seo
The purpose of the developed software is to collect measurements from multiple Loran transmitter chains for performance analysis of navigation methods using Loran, and to organize the data based on time to make it easy to use them.
Signal Processing