• Title, Summary, Keyword: processing

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Korean Named Entity Recognition using Cotraining-based Learning (Cotraining 학습을 이용한 한국어 개체명 인식)

  • Lee, Hyun-Sook;Chung, Eui-Sok;Hwang, Yi-Gyu;Yun, Bo-Hyun
    • Proceedings of the Korea Information Processing Society Conference
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    • pp.597-600
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    • 2002
  • 본 논문에서는 정보추출 및 정보검색, 문서요약과 같은 자연어처리 응용에서 중요한 역할을 하는 개체명 인식 모델을 제안하였다. 기존의 한국어 개체명 인식에 관한 연구는 규칙 기반 연구의 경우 수동으로 생성한 규칙이나 어휘사전에 매우 의존적이고, 통계기반의 연구의 경우 개체명이 태깅된 대량의 학습데이터를 필요로 하므로 새로운 도메인으로의 이식성 관점에서 한계가 있다. 이를 극복하기 위해 본 논문에서는 개체명이 태깅되지 않은 학습데이터를 이용하여 Cotraining 기반 학습을 수행함으로써 개체명 인식을 위한 규칙과 사전을 자동적으로 확장하였다. 실험 결과, 경제분야 문서에 대해 87.6%의 정확률을 보였다.

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Development of an in Vitro Assay for the Proteolytic Processing of the CDP/Cux Transcription Factor

  • Hebert, Sherry;Berube, Ginette;Nepveu, Alain
    • BMB Reports
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    • v.36 no.4
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    • pp.390-398
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    • 2003
  • The CDP/Cux transcription factor was previously shown to be proteolytically processed at the G1/S transition. In view of characterizing and eventually identifying the protease responsible for CDP/Cux processing, we have established an in vitro proteolytic processing assay. CDP/Cux recombinant proteins expressed in mammalian or bacterial cells were efficiently processed in vitro using as a source of protease either whole cell extracts, the nuclear or the cytoplasmic fraction. Processing was found to take place optimally at a lower pH, to be insensitive to variations in salt concentration, and to be inhibited by the protease inhibitors MG132 and E64D. Interestingly, the bacterially-produced substrate was more efficiently processed than the substrate purified from mammalian cells. Moreover, processing in vitro was more efficient when CDP/Cux substrates were purified from populations of cells enriched in the S phase than in the G1 phase of the cell cycle. Altogether, these results suggest that post-translational modifications of CDP/Cux in mammalian cells inhibits processing and contributes to the cell cycle-dependent regulation of processing. The in vitro processing assay described in this study will provide a useful tool for the purification and identification of the protease responsible for the processing of CDP/Cux.

Pipelined Parallel Processing System for Image Processing (영상처리를 위한 Pipelined 병렬처리 시스템)

  • Lee, Hyung;Kim, Jong-Bae;Choi, Sung-Hyk;Park, Jong-Won
    • Journal of IKEEE
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    • v.4 no.2
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    • pp.212-224
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    • 2000
  • In this paper, a parallel processing system is proposed for improving the processing speed of image related applications. The proposed parallel processing system is fully synchronous SIMD computer with pipelined architecture and consists of processing elements and a multi-access memory system. The multi-access memory system is made up of memory modules and a memory controller, which consists of memory module selection module, data routing module, and address calculating and routing module, to perform parallel memory accesses with the variety of types: block, horizontal, and vertical access way. Morphological filter had been applied to verify the parallel processing system and resulted in faithful processing speed.

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Laser Processing System Design of Ultrafast/High Precision/large Area (초고속/초정밀/대면적의 레이저 가공시스템 설계)

  • Lee, Jae-Hoon;Yoon, Kwang-Ho;Kim, Kyung-Han
    • Journal of the Korean Society for Precision Engineering
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    • v.29 no.6
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    • pp.640-647
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    • 2012
  • Current electronic products are dominated by the laser processing and the application will be extended this time. Especially, demands for high precision laser processing with a large area has been increasing for a number of applications such as in solar cell battery, display parts, electronic component and automobile industry. In this paper we designed an on-the-fly system for ultrafast/high precision/large area laser processing. In addition, we have developed the path algorithm for large area. Expansion of the area in which laser processing is an important factor to handle the ultrafast/wide area processing, it will require a processing path. Processing path is path of 2- axis stage and stage of change in velocity can be smooth as possible. We proposed a path of the user concept using NURBS(Non-Uniform Rational B-Spline)method. Through our experiment with the chopper, was to prove the continuity of edge parts. Through basic shape experiments, we proved that large area can be processed using laser. We developed a simulation tool using Visual C++.

A Study on the efficiency test of Electric Discharge Machine Wire using Image processing (화상처리를 이용한 방전와이어의 성능평가에 대한 연구)

  • 배진한;이위로;유송민
    • Proceedings of the Korean Society of Machine Tool Engineers Conference
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    • pp.117-122
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    • 2002
  • Electrical discharge machining uses thermal energy from electrical discharge, while wire electrical discharge machining (WEDM) technology is widely used in conductive material machining. This paper proposes a method for evaluating the characteristics of wires in WEDM. In order to evaluate the wire processing performance, processing speed and roughness, straightness, corner processing have been assessed with precision experiment equipment and image processing including Laplacian filtering with various threshold levels.

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Development of Low Price Ultrasound Image Processing System (저가형 초음파 영상처리 장치의 개발)

  • Lee, Gun-You;Jun, Yang-Bae;Kim, Jeong-Hoon;Kim, Sang-Bong
    • Proceedings of the KSME Conference
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    • pp.53-58
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    • 2001
  • In this paper, a low price ultrasound image processing system is developed using DSP and PC. Ultrasound for image is generated by the 32-channel transducer. Ultrasound image is captured by DSP instead of the private image grabber board. Display of image and image processing algorithms are performed by PC. The image processing algorithms based on GUI are realized by software. So users without knowledge of image processing can perform the image enhancement more easily.

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Semi-Automated Image Processing System for Medical Images (의료영상 반자동화 영상처리 시스템)

  • 최우영;서명환;유돈식;윤재훈
    • Proceedings of the IEEK Conference
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    • pp.225-228
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    • 2003
  • The purpose of this paper is to develop a semi -automated system for medical image processing with which tissues or organs from medical images can be segmented and classified by people who have basic knowledge of image processing. In addition, the proposed medical image processing system is independent on types of human tissues or images. In this paper, a new semi-automated image processing system with essential image processing functions for medical images is introduced

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