• 한국정보통신학회:학술대회논문집
• /
• 한국해양정보통신학회 1999년도 추계종합학술대회
• /
• pp.204-209
• /
• 1999

일반적으로 신경회로망은 다중분광 영상의 카테고리 분류를 위해 많이 사용되나 다중분광 영상의 경우 카테고리간 명암도차가 얼마나지 않아 오차 수렴시간이 많이 걸리고 분류성능이 떨어진다. 이와 같은 문제점을 해결하기 위해 본 논문에서는 평활화 과정, 주된 골을 찾는 과정, 그리고 향상 과정으로 구성되는 새로운 영상 향상법을 제안하고, 제안한 방법으로 향상된 다중분광 영상을 신경회로망의 입력으로 하여 카테고리 분류하였다. 제안한 방법을 LANDSAT TM 영상에 적용한 결과 신경회로망의 오차 수렴속도가 빨라졌고, 분류 성능이 향상되었음을 확인할 수 있었다.

• Journal of Information Processing Systems
• /
• 제19권6호
• /
• pp.830-841
• /
• 2023

Tokenization is the process of segmenting the input text into smaller units of text, and it is a preprocessing task that is mainly performed to improve the efficiency of the machine learning process. Various tokenization methods have been proposed for application in the field of natural language processing, but studies have primarily focused on efficiently segmenting text. Few studies have been conducted on the Korean language to explore what tokenization methods are suitable for document classification task. In this paper, an exploratory study was performed to find the most suitable tokenization method to improve the performance of a representative spatio-temporal document classifier in Korean. For the experiment, a convolutional neural network model was used, and for the final performance comparison, tasks were selected for document classification where performance largely depends on the tokenization method. As a tokenization method for comparative experiments, commonly used Jamo, Character, and Word units were adopted. As a result of the experiment, it was confirmed that the tokenization of word units showed excellent performance in the case of representative spatio-temporal document classification task where the semantic embedding ability of the token itself is important.

• 한국문헌정보학회지
• /
• 제40권2호
• /
• pp.415-434
• /
• 2006

우리 고전 문집에 나타난 용어로 작성된 디스크립터들을 분류하기 위해서 분류 체계를 개발하는 것이 이 연구의 목적이다. 고전 용어 시소러스의 분류 구조는 6개의 패싯으로 범주화를 시작하여 고전 분야의 지식을 근거로 연역적으로 분류 체계를 구조화하였다. 그리고 기존의 인문학 분야의 다른 시소러스들의 분류 체계와 비교하였고, 이러한 비교를 통해서 얻은 것은 고전 용어 분류 체계만이 갖는 여러 장점들 즉 패싯 기법을 적용한 장점 등을 확인할 수 있었다. 이러한 장점들로 인해서 범주 설정의 일관성과 분류 구조의 복잡성을 줄일 수 있었다. 또한 시대나 지역을 구분하기 위한 공통 구분을 독립적으로 설정하여 분류표의 크기를 줄일 수 있었다. 이 분류 체계는 디스크립터들을 배정하는 과정을 통해 보다 나은 분류 체계로 발전해 나갈 것이다.

• 디지털융복합연구
• /
• 제12권6호
• /
• pp.325-332
• /
• 2014

일반적으로 자동분류는 학습문서의 개수에 영향을 받는다고 알려져 있지만 실제로 학습문서의 수가 텍스트 자동분류에 어떻게 영향을 주는지 입증한 연구는 거의 없었다. 본 연구에서는 학습문서 수가 자동분류에 어떤 영향을 주는지 알아보기 위해 최근에 개발된 편차기반 분류방법을 중심으로 다른 분류 알고리즘과 비교하는데 초점을 두었다. 실험결과, 편차기반 분류모델은 학습문서의 수가 총 21개(7개 장르)인 상황에서 정확도가 0.8로 베이지안이나 지지벡터기계보다 우수하게 나타났다. 이것은 편차기반 분류모델이 장르내의 주제정보를 이용하여 학습하기 때문에 학습문서의 수가 적더라도 다른 학습방법보다 좋은 자질 선택 능력을 갖는다는 것을 입증한 것이다.

• 한국전자거래학회지
• /
• 제12권3호
• /
• pp.193-210
• /
• 2007

분류체계가 현업에 유용하게 사용되기 위해서는, 다양한 특성을 가진 기업체나 조직의 사용목적에 적합하도록 만들어져야 한다. 분류체계 생성과정을 자동화함으로써 분류체계 시스템의 운용의 효율성과 편의성은 향상될 수 있으나, 실질적으로 업무에 적용하기 위해서는 분류체계 생성 단계에서부터 사용자가 적극적으로 개입하여 요구사항을 반영할 수 있어야한다. 본 연구에서 제안하는 분류체계 생성 알고리즘은 사용자가 원하는 분류단계를 입력받아 이에 맞는 분류체계를 맞춤형으로 생성한다. 또한, 일차적으로 생성한 분류체계를 사용자가 원하는 형태로 변환할 수 있도록 분류항목을 조작하는 연산자를 제안하고 구현한다.

• 한국문헌정보학회지
• /
• 제12권
• /
• pp.201-224
• /
• 1985

The traditional oriental materials are very important to study on Oriental or Korean studies. Every reseacher that study on this field is familier to Four Category Classification Scheme (四部分類法) as it is based on the traditional knowledge of Orient. Then, when all materials of libraries will he computerized, it will be the first condition that will has to understand about the classification of division and section of oriental knowledge, because not only ancient literature but also many dissertation of this subject will be classified. Therefore, Four Category Classification Scheme has been valuable until now. This paper is intended to help librarians to classify the traditional oriental materials or the dissertation concerned with that, to serve researched user that literatures which have been filed among various traditional bibliographies. The outline of this study are as follows: :1 Examining closely origins, developing process and characteristics of classification of Confacian Classics Part (經部) of Four Category Classification Scheme. (2) Explaning the content of division and section of Confucian Classics Part (經部). (3) Coordinating relation of division and section of Confucian Classics Part as well as those of other parts of the classification scheme. (4) Clearing up the limitation of classification related to other division. (5) Attempting to give basic knowledge on practical classification as concrete examples beloging to each division and section of classification.

• 한국문헌정보학회지
• /
• 제8권
• /
• pp.129-155
• /
• 1981

Four Category Classification Scheme(四部分類法), the traditional classification, is the most proper for classifying the traditional oriental marerials than some other classifications. Therefore, Four Category Classification Scheme has been valuable until now. It is obvious that this classificion aims at a rapid and accurate reference in sorting out the materials and maximun use. This paper is intended as a sludy which helps librarians to classify traditional oriental materials. It is also intended to serve librarians to have easy access to ancient literatures which have been filed among various traditional bibliographies for those who are to research oriental materials as an analysis about Miscelleneous Part(子部). The outline of this study are as follows : (1) Examining closely origins, developing process and characteristics of classification of Miscelleneous Part of Four Category Classification Scheme. (2) Explaining the content of division and section of Miscelleneous Part (子部). (3) Coordinating relations of division and section of Miscelleneous Part as well as those of other parts of the classification scheme. (4) Clearing up the limitation of classification related to other division. (5) Attempting to give basic knowledge on practical classification as concrete examples belonging to each division and section of classification.

• 한국초등과학교육학회지:초등과학교육
• /
• 제39권2호
• /
• pp.284-295
• /
• 2020

The purpose of this study is to explore the possibility of artificial intelligence convergence education (AICE) in elementary biological classification learning. First, the possibility of AICE was analyzed in the field of 2015 revised elementary life science curriculum. The artificial intelligence biological classification (AIBC) education program targeted plant life. The possibility of AICE in the elementary life science curriculum was suggested through the consultation process of three elementary science education experts. The AIBC education program was developed through the review process of elementary education experts. The results of this study are as follows. First, 8(32%) achievement standards were available for AICE in elementary life science. Second, 18(86%) of the 21 items reviewed by the experts for the AIBC education program developed in this study were positively evaluated. Third, in this study, through the analysis of the possibility of AIBC in the elementary life field and the review of the experts, the AIBC education program including teaching and learning models, strategies, and guidance was developed. The results of this study were based on the review of the experts, and as a follow-up study, applied research to elementary students is needed. It is also hoped that various studies on AICE will be conducted not only in the life field but also in science and other fields. Finally, we expect that the results of this study will be applied to bio-classification learning to help students improve classification capabilities and generate classification knowledge.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
• /
• 제45권6호
• /
• pp.302-308
• /
• 2019

Fractures of the styloid process of the temporal bone may occur with or without an obvious relation to trauma. The incidence of either isolated styloid process fracture or in combination with mandibular fractures is rare, and such occurrences are often misdiagnosed or neglected. A fractured styloid when displaced may impinge on adjacent vital structures, leading to neurological or vascular symptoms that vary according to the anatomical structure compressed. Styloid process fractures associated with atlas/C1 fractures have also been rarely reported in the literature. In this review of literature, the majority of patients was treated conservatively, as few demonstrated the necessity of surgical intervention. There is a definitive need for a protocol to recognize and classify styloid fractures to plan for further treatment. The aim of this review was to achieve a comprehensive understanding of all types of styloid fractures, determine the clinical severity of symptoms, and to consider management and prognosis. In addition, a new classification of cervico-stylo-mandibular fractures is proposed based on important evidence in the literature regarding clinical and radiographic factors that might influence the treatment and prognosis of such fractures.

• 품질경영학회지
• /
• 제17권2호
• /
• pp.64-69
• /
• 1989

This paper aims at analyzing the process capability and at determining an optimal condition by experimental designs using the 2-way classification with repitition in order to maintain lower Nacl content and to refine both of a very small quantity of fatty acid and various magnetic ions in the glycerin to use ion exchange resin treatment process. An optimal condition of each level combination in both of passing temperature of cation exchange resin($A_1$, $A_2$, $A_3$) and of anion exchange resin($B_1$, $B_2$, $B_3$) is $A_3B_3$. The process capability index is improved from 0.63 to 1.40 and is interpreted as a desirable state. This analysis of process capability by experimental designs will contribute to improving productivity and quality of products.