• Proceedings of the Korean Information Science Society Conference
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• 2001.10c
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• pp.820-822
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• 2001

본 논문에서는 다수의 LIS들로 구성된 ATM 망에서 특정 IP를 가진 ATM 호스트의 ATM 주소를 해석 하는 NHRP의 주소 해석 시간을 줄이고자, P-NNI 라우팅에 의한 short-cut 경로를 이용한 개선된 NHRP를 제안하였다. 제안된 방식에서는 주소해석을 실제로 담당한 NHS가 NHC에게 NHRP Reply 메시지를 전달 할 경우 short-cut경로를 설정하여 전달함으로써 기존의 NHRP에 비해 주소해석시간을 줄이고 주소해석의 신뢰성을 높일수 있음을 시뮬레이션을 통해 보였다.

• Journal of Korea Society of Industrial Information Systems
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• v.12 no.4
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• pp.74-88
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• 2007

In order to automate the process of mail sorting by delivery sequence, it is necessary to prepare a postal address database and to interpret written addresses on the mail-pieces with the database and OCR technology. The address database is a critical factor of automation and informatization of postal service since it could be used not only in address recognition but also in various mail processing. In this study, we design the schema of postal address database, design the postal address file based on it and explain the method of address interpretation and retrieval using it. We analyze infonnation requirements for transformation of postal address into the standardized format and consider them in the process of design. The postal address file can be used by address matching or retrieval system as well as by Hangul address recognition system for automation of delivery sequence mail-sorting.

• Annual Conference of KIPS
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• 2001.04b
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• pp.647-650
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• 2001

본 논문에서는 다수의 LIS(Logical IP Subnetwork)들로 구성된 ATM 망에서 특정 IP를 가진 ATM 호스트의 ATM 주소를 해석하는 NHRP의 주소 해석 지연 시간을 줄이고자, ATM망의 PNNI 라우팅에 의한 short-cut 경로를 이용한 개선된 NHRP를 제안하였다. 제안한 방안에서는 NHRP Reply 메시지를 전달할 경우 기존의 NHRP Resolution Request 메시지가 전달된 경로와는 별도로 PNNI 라우팅 경로를 이용함으로써 주소 해석을 요구한 호스트에게 빠른 응답 메시지를 전달할 수 있다. 또한 기존의 경로를 통한 응답 메시지의 손실이 발생할 경우, 새로운 경로를 통하여 응답 메시지를 주소 해석을 요구한 호스트에게 전달할 수 있으므로 향상된 신뢰성을 제공한다.

• The KIPS Transactions:PartD
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• v.8D no.3
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• pp.273-284
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• 2001

A systematic approach for interpreting Korean addresses based on postal code is presented in this paper. The implementation is focused on producing the final delivery point code from various types of address recognized. There are two stages in the address interpretation : 1) agreement verification between the recognized postal code and upper part of the address and 2) analysis of lower part of the address. In the agreement verification procedure, the recognized postal code is used as the key to the address dictionary and each of the retrieved addresses is compared with the words in the recognized address. As the result, the boundary between the upper part and the lower part is located. The confusion matrix, which is introduced to correct possible mis-recognized characters, is applied to improve the performance of the process. In the procedure for interpreting the lower part address, a delivery code is assigned using the house number and/or the building name. Several rules for the interpretation have been developed based on the real addresses collected. Experiments have been performed to evaluate the proposed approach using addresses collected from Kwangju and Pusan areas.

• Journal of Korea Society of Industrial Information Systems
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• v.12 no.4
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• pp.15-24
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• 2007

The recognition of postal address images is indispensable for the automatic sorting of postal envelopes. The process of the address image recognition is composed of three steps-address image preprocessing, character recognition, address interpretation. The extracted character images from the preprocessing step are forwarded to the character recognition step, in which multiple candidate characters with reliability scores are obtained for each character image extracted. aracters with reliability scores are obtained for each character image extracted. Utilizing those character candidates with scores, we obtain the final valid address for the input envelope image through the address interpretation step. The envelope sorting rate depends on the performance of all three steps, among which character recognition step could be said to be very important. The good character recognizer would be the one which could produce valid candidates with very reliable scores to help the address interpretation step go easy. In this paper, we propose the method of generating character candidates with reliable recognition scores. We utilize the existing MLP(multilayered perceptrons) neural network of the address recognition system in the current automatic postal envelope sorters, as the classifier for the each image from the preprocessing step. The MLP is well known to be one of the best classifiers in terms of processing speed and recognition rate. The false alarm problem, however, might be occurred in recognition results, which made the address interpretation hard. To make address interpretation easy and improve the envelope sorting rate, we propose promising methods to reestimate the recognition score (confidence) of the existing MLP classifier: the generation method of the statistical recognition properties of the classifier and the method of the combination of the MLP and the subspace classifier which roles as a reestimator of the confidence. To confirm the superiority of the proposed method, we have used the character images of the real postal envelopes from the sorters in the post office. The experimental results show that the proposed method produces high reliability in terms of error and rejection for individual characters and non-characters.

• The KIPS Transactions:PartB
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• v.10B no.4
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• pp.429-442
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• 2003

In this paper, we describe an address image recognition system for automatic processing of standard- size letter mail. The inputs to the system are gray-level mail piece images and the outputs are delivery point codes with which a delivery sequence of carrier can be generated. The system includes five main modules; destination address block location, text line separation, character segmentation, character recognition and finally address interpretation. The destination address block is extracted on the basis of experimental knowledge and the line separation and character segmentation is done through the analysis of connected components and vortical runs. For recognizing characters, we developed MLP-based recognizers and dynamical programming technique for interpretation. Since each module has been implemented in an independent way, the system has a benefit that the optimization of each module is relatively easy. We have done the experiment with live mail piece images directly sampled from mail sorting machine in Yuseong post office. The experimental results prove the feasibility of our system.

• Proceedings of the Korean Institute of Communication Sciences Conference
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• 1998.06a
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• pp.883-886
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• 1998

• Journal of Cadastre & Land InformatiX
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• v.51 no.2
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• pp.21-34
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• 2021

Considering the role of roads in cities and the purpose of the Road Name Address Act, it is natural that the road name of the address is registered as the nearest road section adjacent to the building. Therefore, the Enforcement Decree of the Road Name Address Act also stipulates that mayor assign building numbers based on the basic numbers of road sections adjacent to the main entrances of buildings. However, there were cases where addresses are given from distant roads rather than adjacent roads among the actual road name addresses. Most of them are caused by misinterpretation of the case where the entrance faces more than one road. In this study, institutional and systematic improvement plans were proposed with the aim of enabling accurate selection of address information reference objects by demonstrating the limitations of the current building numbering method and presenting institutional improvement plans. Road name addresses were implemented for the core purpose of improving the inconvenience of locating the lot number address. Although some still complained of the inconvenience of road name addresses, successful settlement was possible because of the intuitive principle that most countries around the world could use it and find buildings along the road. Therefore, the system and system improvement should be made quickly in terms of accurate address information quality management and revitalization of related industries.

• 전기의세계
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• v.45 no.10
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• pp.32-40
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• 1996

본 글은 전기학회 창립 50주년을 맞아 현재의 전력공학의 현 주소는 어디인지를 알아보고 과거 수년간의 급변하는 역사속에서 변화상을 살펴봄으로써 앞으로의 진로에 대한 방향을 얻기 위하여 쓰여졌다. 본 글을 준비함에 있어 다음에 설명할 설문지를 47개의 대학 전력공학 담당 교수에게 보냈고 돌아온 응답 37개를 바탕으로 통계를 작성하였다. 그리고 교육통계연감과 미국의 IEEE에서 작성한 미국과 캐나다의 전력 공학의 상황에 대한 논문도 사용하여 비교 자료로 활용하였다. 본 글에서의 전력공학에 대한 정의는 전력계통과 전력 전자 등을 포함하는 광의의 해석에 의한 분류가 아니라 전통적인 전력공학 즉, 전력계통과 해석, 발송배전, 제어, 기기등의 협의의 정의에 의한 전력 교육 분야를 나타낸다.

• Annual Conference of KIPS
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• 2004.05a
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• pp.297-300
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• 2004

자바는 객체지향 언어이고 바이트코드로 번역 이후에는 플랫폼에 독립적으로 가상머신에 의해 실행될 수 있기 때문에 소프트웨어 개발과 유지보수에 많은 장점을 갖는다. 이러한 특징으로 인해 플랫폼에 독립적인 소프트웨어 개발에는 자바가 많이 이용된다. 그러나 바이트코드로 작성된 프로그램은 가상기계에서 인터프리터 방식으로 수행된다. 때문에 프로그램의 실행속도가 느리게 실행되는 문제점을 가지고 있다. 실행속도의 문제점을 해결하기 위한 여러 가지 방법들이 연구가 진행중이다. 본 논문은 자바 바이트코드가 가상기계에서 인터프리터 방식으로 수행할 때 바이트코드의 크기를 줄여 해석하는 부담을 줄이기 위해서 바이트 코드를 최적화하는 프레임워크를 구성한다. 프레임워크를 이용하여 바이트코드를 3주소 형태의 CTOC-T(Class To Optimizer Classes-Three Address Code)로 변환하여 프로그램을 분석을 할 수 있다. 또한 CTOC-T는 3주소 형태이므로 3주소 최적화 기법을 적용하여 최적화된 바이트코드를 생성하는 프레임워크를 설계한다.