• The Journal of Korean Institute of Communications and Information Sciences
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• v.25 no.10B
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• pp.1785-1792
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• 2000

In this paper multi-rate non-recursive architecture for CIC(Cascaded Integrator-Comb) decimation filters with an arbitrary factor is proposed. The CIC filters are widely used in high speed wireless communication systems since they have multiplier-less and multi-rate low-power structure. Even conventional non-recursive CIC structure is multi-rate this architecture can be structured only in case of M-th power-of-two decimation factor. This paper proposes that muli-rate non-recursive CIC architecture can be structured with an any decimation factor of product form. Power consumption of the proposed architecture is compared with that of the conventional non-recursion architecture.

• Annual Conference of KIPS
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• 2002.04b
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• pp.1013-1016
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• 2002

제어 시스템에 사용되는 흐름 제어 언어로는 IL(Instruction List), ST(Structured Text), FBD(Function Block Diagram), SFC(Sequential Function Chart), LD (Ladder Diagram)가 있다. 일반적으로 제어 시스템에 탑재하여 사용하는 언어는 상기 언어 중 두 종류 이하의 특정 언어로 제한되어 있다. 이러한 제약을 보완하기 위해, 모든 흐름 제어 언어를 통합 분석할 수 있는 통합 분석기가 필요하다. 본 논문에서는 흐름 제어 언어의 통합 분석 처리가 가능하도록 그래픽 표현의 FBD 를 문자 표현의 EST(Extended Structured Text)로 변형하는 규칙과 문자 표현의 EST 를 IL 로 변형하는 규칙을 제시한다. 언어간의 변형 과정에서 FBD 를 ST 로 표현할 수 없는 부분을 EST 로 정의한다. 또한 본 논문에서 제안된 EST 를 기반으로 통합 분석기의 구조를 제시한다.

• Annual Conference of KIPS
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• 2011.04a
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• pp.361-364
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• 2011

본 논문의 목표는 크게 두 가지이다. 하나는 2010년에 개발한 메신저 자동번역 시스템을 소개하는 것이고, 다른 하나는 메신저 대화체 문장을 더욱 고품질로 번역하기 위한 구조화된 번역 메모리(Structured Translation Memory)를 소개하는 것이다. 구조화된 번역 메모리는 기존의 문자열 기반의 번역 메모리와 자동 번역 시스템의 경계를 허무는 개념으로 구조를 표현하는 계층적 번역 메모리들로 구성된다. 구조화된 번역 메모리는 문자열 번역 메모리, 원형 어휘로 구성된 번역 메모리, 고유명사가 청킹된 번역 메모리, 날짜/숫자가 청킹된 번역 메모리, 기본명사구가 청킹된 번역 메모리, 문장 패턴 번역 메모리로 단계적으로 구성된다. 구조화된 번역 메모리를 적용하기 전의 2010년의 영한 메신저 자동 번역 시스템의 번역률이 81.67%였던 반면에, 구조화된 번역 메모리를 적용하려는 2011년의 영한 메신저 자동 번역 시스템의 시물레이션 번역률은 85.25%인 것으로 평가되었다. 따라서 구조화된 번역 메모리를 적용하였을 때는 기존의 번역률보다 3.58% 향상할 것으로 예측된다.

• Journal of Web Engineering
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• v.20 no.3
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• pp.795-816
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• 2021

The existing industry evaluation method utilizes the method of collecting the structured information such as the financial information of the companies included in the relevant industry and deriving the industrial evaluation index through the statistical analysis model. This method takes a long time to calculate the structured data and cause the time delay problem. In this paper, to solve this time delay problem, we derive monthly industry-specific interest and likability as a time series data type, which is a new industry evaluation indicator based on unstructured data. In addition, we propose a method to predict the industrial risk index, which is used as an important factor in industrial evaluation, based on derived industry-specific interest and likability time series data.

• Proceedings of the Korean Society for Information Management Conference
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• 1997.08a
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• pp.209-212
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• 1997

문헌의 구조화를 통한 전문의 이용은 검색에 있어 많은 효율을 가져올 것으로 기대된다. 여기에서 구조화된 문헌을 저장하고 관리하기 위한 데이터베이스는 그 특성을 반영하여 구축되어야 한다. 본 연구에서는 이를 위한 데이터베이스로서 객체지향 데이터베이스를 선정하고 객체지향 모델링 기법을 이용하여 구조화된 문헌을 위한 데이터베이스를 설계하고 구현하였다.

• Proceedings of the Korean Society for Information Management Conference
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• 1997.08a
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• pp.79-82
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• 1997

전자도서관 환경에서의 필요성으로 인해 이미지정보에 대한 관심과 정보로서의 가치 및 중요성이 널리 인정됨에 따라, 이를 위한 효과적인 색인방법과 검색시스템이 요구되고 있다. 이에 본 연구에서는 구조화된 문헌의 이미지정보를 자동으로 색인하여 데이터베이스를 구축하고 WWW상에서 이용할 수 있는 이미지정보 검색시스템을 구현하였다.

• Proceedings of the IEEK Conference
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• 2000.06c
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• pp.71-74
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• 2000

New methods for storing and retrieving semi-structured data such XML documents has been recently studied. In this paper, we concern querying of XML data stored in relational tables. We first describe a method of querying XML documents using Oracle XDK, especially XSQL Servlet. We then apply the method to XML documents describing book information.

• The Journal of Society for e-Business Studies
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• v.8 no.1
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• pp.85-102
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• 2003

Nowadays an information exchange on XML such as B2B electronic commerce is spreading. Therefore the systematic and stable management mechanism for storing the exchanged information is needed. For this goal there are many research activities for connection between XML application and relational database. But because XML data have hierarchical structures and relational database can store only flat-structured data, we need to make the conversion rule which changes the hierarchical architecture to 2-dimensional information. Accordingly the modeling methodology for storing each structured information in relational database is needed. In this paper, we introduce a XML modeling methodology to design W3C XML schema using UML and we propose a unified design methodology for relational database schema to store XML data efficiently in relational databases. In the second place, in order to verify objectivity of a unified design methodology. By the way of Ronald Bourret, First we introduce the method of the transformation from XML schema to object model and second we translate object model into relational database schema. Therefore we show the mutual consistency between those consequence, and so can verify a unified design methodology.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.24 no.7B
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• pp.1305-1312
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• 1999

To improve the quality of standards of information and communication, well-structured testing and certification procedure for interoperability must be established. Thus, the testing and certification by well-known organizations is very imperative to verify whether standards meet requirements of minimum components properly that are essential to implement products and services in practice focusing on interoperability testing area. In this paper, we investigate cases of abroad and the current situation of our country in order to establish the well-structured testing and certification system and promote researches for the testing and certification system as a national policy in coincidence with revision of relating systems in interoperability testing area. And then we intend to introduce desirable direction for the testing and certification system.

• Journal of Intelligence and Information Systems
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• v.17 no.4
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• pp.59-74
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• 2011

As more users are willingly participating in the creation of web contents, flat folksonomy using simple tags has emerged as a powerful instrument to classify and share a huge amount of knowledge on the web. However, flat folksonomy has semantic problems, such as ambiguity and misunderstanding of tags. To alleviate such problems, many studies have built structured folksonomy with a hierarchical structure or relationships among tags. However, structured folksonomy also has some fundamental problems, such as limited tagging to pre-defined vocabulary for new tags and the timeconsuming manual effort required for selecting tags. To resolve these problems, we suggested a new method of attaching a categorized tag (CT), followed by its category, to web content. CTs are automatically integrated into collaboratively-built structured folksonomy (CSF) in real time, reflecting the tag-and-category relationships by majority users. Then, we developed a CT-based knowledge organization system (CTKOS), which builds the CSF to classify organizational knowledge and allows us to locate the appropriate knowledge.