• Title/Summary/Keyword: Gil-ho Kim

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Development of an MT System on Distributed Environment : about lexicon construction and test environment (분산 환경에서의 번역 시스템의 개발 : 사전 구축과 테스트 환경을 중심으로)

  • Lee, Hyun-Ah;Jang, Byung-Gyu;Kang, In-Ho;Lee, Shin-Mok;Kim, Gil-Chang
    • Annual Conference on Human and Language Technology
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    • 2000.10d
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    • pp.344-349
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    • 2000
  • 본 논문에서는 영한 기계번역 시스템 ALKOL의 개발 과정에서 사용된 분산 환경을 사전구축과 테스트 환경을 중심으로 설명한다. 번역 시스템 개발은 시스템 개발자, 사전 개발자, 검사자(tester)의 세 요소를 중심으로 이루어지는 작업으로, 효율적인 개발을 위해서는 개별 요소의 작업이 독립적으로 진행되면서 유기적으로 연결될 수 있는 환경이 마련되어야 한다. ALKOL에서는 이를 위하여 번역 시스템을 번역 서버, 사전 서버, 사전 편집기, 사용자 인터페이스의 클라이언트/서버 분산 환경으로 구성하고 검사자를 위한 테스트 환경을 제공하여 효율적인 번역 시스템 개발 환경을 구축한다. 번역 시스템을 분산 환경에서 개발하여 시스템 개발자, 사전 개발자, 검사자가 각자의 작업을 병렬적으로 진행할 수 있고 실시간으로 갱신되는 시스템과 사전 정보를 이용하여 작업을 진행할 수 있어 번역 시스템 개발의 효율성을 높일 수 있다.

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Developing an Error Correction Tool for Sejong POS Tagged Corpus (세종 형태분석 말뭉치의 오류 수정 도구 개발)

  • Choi, Myung-Gil;Nam, Yoo-Rim;Seo, Hyung-Won;Jeon, Kil-Ho;Kim, Jae-Hoon
    • Annual Conference on Human and Language Technology
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    • 2011.10a
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    • pp.114-116
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    • 2011
  • 한국어 정보처리에서 널리 사용되는 세종 형태분석 말뭉치는 품사정보와 문장정보 등 다양한 한국어 정보를 포함하고 있다. 이 말뭉치는 방대한 양의 정보들로 구축되었지만 많은 오류 또한 포함되어 있다. 예를 들면 철자 오류, 띄어쓰기 오류, 그리고 품사부착 오류 등이 있다. 하지만 세종말뭉치와 같이 대용량 말뭉치의 오류를 수정하는 것은 많은 인력과 시간이 필요하며 일관성 있게 오류를 수정하는 것은 쉽지 않다. 따라서 본 논문에서는 세종 형태분석 말뭉치에 포함된 오류를 빠르고 일관성 있게 수정하기 위한 오류 수정 도구를 구현하였다. 본 논문에서 수정 대상이 되는 오류는 어절과 형태소 분석 결과의 불일치에 관한 오류만 대상으로 한다. 이를 위해 세종 형태분석 말뭉치를 데이터베이스로 재구축하였으며, 본래의 어절과 품사가 부착된 형태소의 자모를 각각 분리하여 두 자모의 차이점을 분석하여 오류 후보를 선정한다. 오류 후보에서 동일한 오류 패턴을 갖는 모든 오류 후보에 대하여 동일한 방법으로 일관성 있고 빠르게 수정할 수 있다.

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Performance Improvement of Chunking Using Cascaded Machine Learning Methods (다단계 기계학습 기법을 이용한 구묶음 성능향상)

  • Jeon, Kil-Ho;Seo, Hyeong-Won;Choi, Myung-Gil;Nam, Yoo-Rim;Kim, Jae-Hoon
    • Annual Conference on Human and Language Technology
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    • 2011.10a
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    • pp.107-109
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    • 2011
  • 기계학습은 학습말뭉치로부터 문제를 해결하기 위한 규칙을 학습하여 모델을 생성한다. 생성된 모델의 성능을 높이기 위해서는 문제에 적합한 자질들을 많이 이용해야 하지만 많은 자질들을 사용하면 모델의 생성시간은 느려지는 것이 사실이다. 이 문제를 해결하기 위해 본 논문에서는 다단계 기법을 적용한 기계학습으로 구묶음 시스템을 제작하여 학습모델의 생성시간을 단축하고 성능을 높이는 기법을 제안한다. 많은 종류의 자질들을 두 단계로 분리하여 학습하는 기법으로 1단계에서 구의 경계를 인식하고 2단계에서 구의태그를 결정한다. 1단계의 학습자질은 어휘 정보, 품사 정보, 띄어쓰기 정보, 중심어 정보를 사용하였으며, 2단계 학습자질은 어휘 정보와 품사 정보 외에 1단계 결과에서 추출한 구의 시작 품사 정보와 끝 품사 정보, 구 정보, 구 품사 정보를 자질로 사용하였다. 평가를 위해서 본 논문에서는 ETRI 구문구조 말뭉치를 사용하였다.

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Molecular Cloning and Expression of a Thermostable Xylose (Glucose) Isomerase Gene, xylA, from Streptomyces chibaensis J-59

  • Joo, Gil-Jae;Shin, Jae-Ho;Heo, Gun-Young;Kim, Young-Mog;Rhee, In-Koo
    • Journal of Microbiology
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    • v.43 no.1
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    • pp.34-37
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    • 2005
  • In the present study, the xylA gene encoding a thermostable xylose (glucose) isomerase was cloned from Streptomyces chibaensis J-59. The open reading frame of xylA (1167 bp) encoded a protein of 388 amino acids with a calculated molecular mass of about 43 kDa. The XylA showed high sequence homology (92% identity) with that of S. olivochromogenes. The xylose (glucose) isomerase was expressed in Escherichia coli and purified. The purified recombinant XylA had an apparent molecular mass of 45 kDa, which corresponds to the molecular mass calculated from the deduced amino acid and that of the purified wild-type enzyme. The N-terminal sequences (14 amino acid residues) of the purified protein revealed that the sequences were identical to that deduced from the DNA sequence of the xylA gene. The optimum temperature of the purified enzyme was $85^{\circ}C$ and the enzyme exhibited a high level of heat stability.

Proposal of an Algorithm for an Efficient Forward Link Adaptive Coding and Modulation System for Satellite Communication

  • Ryu, Joon-Gyu;Oh, Deock-Gil;Kim, Hyun-Ho;Hong, Sung-Yong
    • Journal of electromagnetic engineering and science
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    • v.16 no.2
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    • pp.80-86
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    • 2016
  • This paper proposes the algorithm for forward link adaptive coding and modulation (ACM) and the detailed design for a satellite communication system to improve network reliability and system throughput. In the ACM scheme, the coding and modulation schemes are changed by as much as the channel can provide depending on the quality of the communication link. To implement the forward link ACM system in the Ka-band, channel prediction and modulation/coding decision methods are proposed and simulated. The parameters of the adaptive filter predictor based on the least mean square are optimized, the minimum mean square error of the channel predictor is 0.0608 when step size and the number of filter tap are 0.0001 and 4, respectively. A test-bed is set up to verify the forward link ACM system, and a test is performed using a Ka-band satellite (i.e., Communication, Ocean, and Meteorological Satellite [COMS]). This test verifies that the ACM scheme can increase the system throughput.

Effects of Typha Angustata on Hyperlipidemia Rats Induced by Triton WR-1339 (Triton WR-1339로 유발된 흰쥐의 고지혈증(高脂血症)에 대한 포황(蒲黃)의 실험적(實驗的) 연구(硏究))

  • Lee Sun-Mo;Jeong Chan-Gil;Kim Kwang-Ho;Soh Kyung-Sun
    • Journal of Society of Preventive Korean Medicine
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    • v.8 no.1
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    • pp.33-45
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    • 2004
  • In order to study the effects of Typha angustata on hyperlipidemia, we divided the rats into three groups(normal group, control group & sample group) and perfomed the experimental research. Hyperlipidemia rats were induced by Triton WR-1339 for 3days. The sample group was administerd the extract of Typha angustata 2ml/200g for 3 days and control group was administerd equal dose of saline. And then we measured the amount of serum Total cholesterol, Triglyceride, LDL-cholesterol, HDL-cholesterol, and Phospholipid. The results were as follows: 1. Typha angustata showed decreasing effects on Total cholesterol, Triglyceride, LDL-cholesterol, and Phospholipid levels in serum significantly(p<0.01) 2. Typha angustata showed and showed increasing effects on HDL-cholesterol level in serum significantly(p<0.05). According to the above results, Typha angustata showed significant decreasing effects on hyperlipidemia, and it is considered that it is appropriate to apply for hyperlipidemia.

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Socket Pressure Distribution of the Uni-Lateral Trans-Femoral Amputee with a Suction Socket (흡착식 소켓을 착용한 일측 대퇴절단환자의 소켓내부압력분포)

  • Jang, Yun-Hui;Yang, Gil-Tae;Im, Song-Hak;Mun, Mu-Seong;Kim, Yeong-Ho
    • Journal of Biomedical Engineering Research
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    • v.19 no.4
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    • pp.417-422
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    • 1998
  • The study was explored socket pressure distributions on a trans-femoral amputee with a suction socket in static and dynamic situations. Even when the amputee stood in the anatomically neutral position, significant pressure concentrations were observed in the lateral, medial, and posterior planes of the socket. During free level walking, a significant shifting pattern of pressure concentration areas was observed. High socket pressure was observed in the lateral, medial-anterior and posterior walls during mid-stance or push-off period. Socket pressure measurement will be one of the good tool to determine the optimal socket-limb interface.

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A Study on the Adaptive Edge Detection by Considering Direction Information (방향성을 고려한 적응 에지 검출에 관한 연구)

  • Lee, Chang-Young;Choi, Hyun-Gil;Kim, Nam-Ho
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2011.10a
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    • pp.672-674
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    • 2011
  • Edge contains important information to analyze the characteristics of the images. Edge detection has been a lot utilized in areas such as computer vision and image processing etc.. And sobel, prewitt, roberts are representative methods among the initially used methods. Although these conventional methods easily detect large change points of slope of brightness, optional directional edge detection abilities of conventional edge detection are not efficient. Therefore, in this paper, to complement the shortcomings of existing edge detection method, we proposed adaptive edge detection method considering direction information. through simulatioopn, we verify abilities of our method.

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A Component Quality Assurance Process and its Application (컴포넌트 품질 관리 프로세스 개발 사례)

  • Kim, Gil-Jo;Jang, Jin-Ho;Hwang, Seon-Myeong
    • The KIPS Transactions:PartD
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    • v.8D no.6
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    • pp.699-704
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    • 2001
  • Developing a component-based software requires verified and standardized software components. This paper presents a component quality management (CQM) process. The process was developed and applied to the government-sponsored trial projects that developed software components. The process is composed of four phases:quality specification, quality planning, quality control, and quality evaluation. With this process, we can establish quality goals and focus our efforts on the activities to achieve the goals. A component quality model is also suggested to transform the implicit quality requirements into the measurable quality goals and to be used for the basis when we evaluate the quality of software components against the quality goals.

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An Analysis on the Preference Factors of Garden-Housing Consumers (전원주택단지 수요자의 입주선호요인 분석)

  • Kim, Jin-Sep;Lee, Chan-Ho;Choi, Gil-Hong
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.12 no.12
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    • pp.5614-5621
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    • 2011
  • The purpose of this thesis is to derive the demand expediting measures of the garden-housing site suitable to the Pusan metropolitan region through understanding the characteristics of the preference based on the investigation of the demand. From the empirical study of the thesis, we developed the following demand expediting strategies of the garden-housing site. First, the development concept should be focused on the market demand and community building. Second, the garden-housing site has to be developed near the existing urban areas and the site must have the convenient facilities and infrastructures. Third, community building concept should be applied in the site design.