• The KIPS Transactions:PartB
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• v.9B no.3
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• pp.383-388
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• 2002

We developed a spatial parser generator, SPG, which can automatically create a spatial parser if CMG(Constraint Multiset Grammars) grammars for a visual language are provided by the user with GUI(Graphical User Interface). SPG has the following features. (1) The user uses a visual editor to define the grammars of a virtual language and draw the visual language which should be parsed. (2) The user roughly defines CMG grammars in a visual wan at first. Then the user modifies them and defines final grammars. (3) Because SPG has a constraint solver, it maintains constraints in the parsed virtual language according to the grammars.

• Journal of Korean Society of Coastal and Ocean Engineers
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• v.5 no.4
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• pp.307-317
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• 1993

The problem of sea wave transformation in the coastal zone taking into account effects of nonlinearity and disperison has been studied. Mathematical model for description of regular wave transformation is based on the method of nonlinear ray theory. The equations for rays and wave field have been produced. Nonlinear wave field is described by the modified Korteweg-de Vries equation. Some analytical solutions of this equation are obtained. Caustic transformation and dissipation effects are included in the mathematical model. Numerical algorithm of solution of the Korteweg-de Vries equation and its stability criterion are described. Results of nonlinear transformation of sea waves in the coastal zone are demonstrated.

• Korean Journal of Cognitive Science
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• v.2 no.1
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• pp.109-142
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• 1990

The present pater aims to review Barriers framework proposed by chomsky(1986b) to point out some potential problems and to give an alternative definition of barriers.Chomsky assumes that adjunction to non-argument is possible for syntactic movement But this assumption results in overgeneration of ungrammatical sentences.We do not allow any adjunction in syntax,and abandin the Empty Category Princile,instead we propose Head Licensing Cindition and Antecedent Condition.HLC requires empty non-proneminals to be marked by head either lexical or functional and AC states that traces should be 0-subjacent to their antecedents.

• Journal of the Korea Computer Industry Society
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• v.4 no.12
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• pp.943-952
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• 2003

GDS(Grating automatic Drawing System), which is an automatic design system of metal products called grating, is a system that produces various detailed drawings on the basis of information within a Plan Drawing that represents layout of the gratings such as locations, shapes, directions, etc. However, automatically produced drawings by GDS do not fully satisfy the standard of the general dimension marking method used among the layout designers. The lack of this standard quality mainly results from the fact that overlapping among dimension markings appears frequently. To solve the overlapping problem we applied the rule-based expert system which uses the expert's knowledges and facts to solve the problems. The rules for the expert system are designed based on the expertise of skilled layout designers within the grating production lines.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.32 no.1
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• pp.70-76
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• 2008

Periodic cellular metals (PCMs) are actively being investigated because of their excellent specific strength and stiffness, and multi-functionality such as a heat disperse structure bearing external loading. The Kagome truss PCM has been proved that it has higher resistance to plastic buckling and lower anisotropy than other truss PCMs. In this paper, the out-of-plane compressive responses of the WBK specimens have been measured, theoretically predicted and numerically analyzed. Three specimens of two-layered WBK are fabricated and tested for measuring the responses. The peak stress of compressive behavior and effective elastic modulus are predicted based on the equilibrium equation and elastic energy conservation. Moreover, the structure of the specimen is modeled using the commercial mesh generation code, PATRAN and the finite element analysis for the model under the compression is carried out using the commercial FE code, ABAQUS. Finally, the obtained results are compared with each other to analyze the compressive characteristics of Wire-woven Bulk Kagome (WBK).

• Journal of Korea Multimedia Society
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• v.6 no.6
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• pp.1079-1087
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• 2003

A lot of expert systems have been developed in the area of medical diagnosis and prescription, but there has been relatively little effort to develop medical expert systems using domestic technologies. In this paper, a medical expert system for gastroenteritis is developed, which can be easily used on the Internet. This system is implemented using Java technologies and Jess, which is a Java expert system shell. Therefore. the system can be used independently from a specific platform on the Internet. In addition, facts and rules of a knowledge base in the system ate represented separately making the system updatable and expandable with ease.

• Journal of KIISE
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• v.42 no.11
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• pp.1452-1458
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• 2015

Korean Morphological Analysis is a difficult process. Because Korean is an agglutinative language, one of the most important processes in Morphological Analysis is Morpheme Recovery. There are some methods using Heuristic rules and Pre-Analyzed Partial Words that were examined for this process. These methods have performance limits as a result of not using contextual information. In this study, we built a Korean morpheme recovery system using deep learning, and this system used word embedding for the utilization of contextual information. In '들/VV' and '듣/VV' morpheme recovery, the system showed 97.97% accuracy, a better performance than with SVM(Support Vector Machine) which showed 96.22% accuracy.

• 한국공간정보시스템학회:학술대회논문집
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• 2002.03a
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• pp.65-70
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• 2002

도로표지는 도로 이용자에게 목적지까지의 방향, 거리, 경로 안내 등 기타정보를 제공함으로써 안전하고 원활한 교통흐름을 제공하여 도로의 이용 효율을 극대화할 수 있는 중요한 도로 부속시설물이다. 이 시설물의 설치 기준인 도로표지규칙의 일부 기준이 미흡하고 운영 및 관리담당 기관이 일원화되지 않아, 전문적 도로표지 관리가 용이하지 않은 실정이다. 이에 도로표지의 통합적 전문적 관리와, 그에 따른 도로표지의 신속하고 정확한 조사가 필요하게 되었다. 본 연구에서는 최적의 조사시스템을 도출하기 위하여 도로시설물의 조사를 위한 여러 방법과 시스템을 비교하고 그 장단점을 분석하였다. 또한, 수치지도를 바탕으로 한 도로망도를 추출하고 DGPS 측량을 실시한 도로망도를 이용하여 현지조사를 실시하였다. 현지 조사 시스템을 공간정보, 속성정보로 구성된 데이터베이스, 표지판등록 및 GPS프로그램으로 구성된 응용프로그램, 소프트웨어와 경로탐색용 네비게이션, 노트북, 디지털카메라, GPS로 구성된 하드웨어로 구성하여 현지조사에 사용하였다. 현지조사 작업은 차량에 설치된 디지털카메라를 이용하여 원격조정으로 도로표지의 사진을 촬영하고, GPS를 이용하여 위치를 측정하였다. 현지조사 시스템은 지도의 축척에 맞는 정확도로 조정이 가능하며, 도로표지 조사뿐만 아니라 교통표지 및 그 외의 도로시설물의 조사에도 활용하고, 무선통신을 이용한다면 실시간 정보의 수정 및 입력이 가능할 것으로 판단된다.

• Proceedings of the Korean Information Science Society Conference
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• 2011.06c
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• pp.232-235
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• 2011

지식표현은 일반적으로 논리, 규칙, 프레임 또는 의미망 형태로 표현되며, 최근에는 의미망을 이용한 온톨로지 형태로 표현되고 있다. 이러한 지식표현 방법은 개념을 설명하는 문맥적인 정보나 개념들 간의 구조적인 정보를 이용하여 개념에 대한 지식을 논리적으로 표현하는데 중점을 두었다. 하지만, 지식표현에 사용되는 의미정보는 사람에 의해 수집되고 정제되기 때문에 많은 시간, 비용 및 인력이 필요하다는 한계가 있고, 새로운 의미를 추가하거나 기존의 의미를 수정하는 것이 매우 어렵다는 한계가 있다. 색채는 특정 대상이나 개념에 대한 의미, 연상, 상징 등 객관적인 특징 뿐 아니라 시대, 나라, 문화와 같은 사회적 배경을 반영하기 때문에, 정보를 제공하고 감성을 전달하는 효과적인 수단으로 사용되고 있다. 이에 본 논문은, 색채를 이용한 의미정보모델 구축을 위해, 색채정보를 수집하고 정량적으로 분석하는 방법을 제안한다. 긍정/부정/불안/중립으로 구성된 감성어휘 273개를 이용하여 이미지를 수집한 결과 총 130,944개의 이미지를 수집하였다. 이미지에는 여러 가지 사물, 행동, 배경, 색채 등 다양한 정보가 혼재되어 있어 감성어휘와 연관된 색채를 구별하기 어렵기 때문에 이미지를 직관적으로 설명할 수 있는 사용자 태그를 별도로 수집하였다. 태그는 총 2,836,395개를 수집하였고 각 이미지와 그룹에서의 가중치를 구하였다. 태그의 가중치를 통해 이미지가 그룹 내에서 갖는 중요도를 판별하였고, 각 그룹 별로 상위 30%의 이미지를 추출하여 대표 색채를 분석하였다.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.15 no.1
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• pp.133-140
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• 2011

For both customers and companies, it is very important to analyze online customer reviews, which consist of small documents that include opinions or experiences about products or services, because the customers can get good informations and the companies can establish good marketing strategies. In this paper, we propose the association model for the opinion mining which can analyze customer opinions posted on web. The association model is to modify the association rules mining model in data mining in order to apply efficiently and effectively the association mining techniques to the opinion mining. We designed and implemented the opinion mining systems based on the modified association model and the grouping idea which would enable it to generate significant rules more.