• Journal of the Korea Society for Simulation
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• v.20 no.4
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• pp.115-125
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• 2011

Manufacturing companies usually manage the process to achieve high quality using various types of control chart in statistical process control. When an assignable cause occurs in a process, the data in the control chart changes with different patterns by the specific causes. It is important in process control to classify the CCP (Control Chart Pattern) recognition for fast decision making. In former research, gathered data from process used to apply as raw data, leads to degrade the performance of recognizer and to decrease the learning speed. Therefore, feature based recognizer, employing feature extraction method, has been studied to enhance the classification accuracy and to reduce the dimension of data. We propose the method to extract features that take the distances between CCP data and reference vector generated from BDK (Bi-Directional Kohonen Network). We utilize those features as the input vectors in ANN (Artificial Neural Network) and compare with raw data applied ANN to evaluate the performance.

• Proceedings of the Acoustical Society of Korea Conference
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• 1998.06c
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• pp.131-134
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• 1998

본 논문에서는 전자 개인 비서 시스템(PEAS)의 일부인 일정관리 시스템을 화자인식 기술을 적용하여 구현하였다. 본 시스템은 음성을 패스워드로 개인을 확인하여 각 개인의 일정을 관리해 주는 것으로 보안성과 함께 사용자에게 편의성을 제공한다. 사용자 등록을 자유롭게 하였으며 인식에서는 계산 시간 등을 고려하여 DTW 알고리즘에서 얻을 수 있는 경로정보를 이용해 하나의 참조패턴을 구성하도록 하였다. 또한 시간 흐름에 따라 인식율 저하를 방지하기 위해 실험결과에 따라 일정기간 뒤에 자동으로 참조패턴이 갱신되도록 하였다.

• Proceedings of the Korean Society for Information Management Conference
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• 1994.12a
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• pp.143-146
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• 1994

본 연구에서는 표제면과 판권지의 서지요소의 레이아웃 특성과 구문적 특성을 이용하여 서지요소의 종류를 패턴인식 지식베이스와 전거화일들을 이용하여 자동 인지하고 인지된 서지요소를 한국문헌자동화목록형식(KORMARC)과 한국문헌자동화목록법(KORMARC) 기술규칙에 기초하여 KORMARC 형태로 출력해 주는 편목전문가시스템을 구축하였다.

• Proceedings of the Korea Information Processing Society Conference
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• 2019.10a
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• pp.530-532
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• 2019

제안하는 서비스는 OCR(Optical Character Recognition, 광학문자인식)과 딥러닝 패턴분석 알고리즘을 활용하여 문서를 효율적으로 관리하는 서비스로 필기를 많이 하는 사용자를 위한 기능을 제공한다. 최근 다양한 분야에서의 머신러닝 기반의 OCR의 활용이 증가했지만 기존의 애플리케이션은 패턴 분석 알고리즘과 통계 기반의 OCR을 혼합하여 사용하기 때문에 필기체에 대한 인식률이 높지 않다. 이에 본 논문에서는 OCR과 패턴분석 알고리즘을 활용하여 필기체에 대한 높은 인식률을 제공하는 서비스를 제안한다.

• Journal of the Korea Society of Computer and Information
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• v.7 no.1
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• pp.174-183
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• 2002

In this paper a control chart pattern recognition methodology based on the back propagation algorithm and Multi layer perceptron, a neural computing theory, is presented. This pattern recognition algorithm, suitable for real time statistical process control. evaluates observations routinely collected for control charting to determine whether a Pattern, such as a cycle. trend or shift, which is exists in the data. This approach is promising because of its flexible training and high speed computation with low-end workstation. The artificial neural network methodology is developed utilizing the delta learning rule, sigmoid activation function with two hidden layers. In a computer integrated manufacturing environment, the operator need not routinely monitor the control chart but, rather, can be alerted to patterns by a computer signal generated by the proposed system.

• Journal of the Korean Institute of Intelligent Systems
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• v.19 no.1
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• pp.54-61
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• 2009

This paper presents a new electromyogram (EMG) pattern recognition method based on the Hierarchical Temporal Memory (HTM) algorithm which is originally devised for image pattern recognition. In the modified HTM algorithm, a simplified two-level structure with spatial pooler, temporal pooler, and supervised mapper is proposed for efficient learning and classification of the EMG signals. To enhance the recognition performance, the category information is utilized not only in the supervised mapper but also in the temporal pooler. The experimental results show that the ten kinds of hand motion are successfully recognized.

• Journal of the Korean Society for information Management
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• v.11 no.2
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• pp.131-164
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• 1994

This study shows the design and implementation of cataloging expert system using pattern recognition techniques. This system attemps to demonstrate the feasibility of cataloging in KORMARC format from title page and copyright page without the intervention of humans. The prototype was implemented as a rule-based system in Turbo C. To demonstrate the function and capability of the system, experimental document-group and control document-group was analyzed. The hit ratio of experimental document-group is 94%. On the other hand, the hit ratio of control document-group is 93%, a little bit lower than the experimental group.

• 한국어정보학회:학술대회논문집
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• 2017.10a
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• pp.264-266
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• 2017

본 연구는 리마인더 앱을 위한 효과적인 시간 표현 분석 방법을 제안한다. 시간 표현 분석을 위한 정규식 패턴을 이용하여 사용자 발화 텍스트로부터 시간 정보를 분석하고 시간 표현 유형에 따라 절대적 시간 정보로 변환한다. 제안한 방법은 정규식 패턴을 이용한 시간 표현 분석 기법으로 시스템의 유지 관리가 용이하고 정보량이 많은 패턴과의 매칭을 위해 효과적이다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2022.11a
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• pp.242-244
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• 2022

기관실 선원들의 안전관리를 위해 영상기반 쓰러짐, 안전보호구 착용, 화재감지를 실시간 모니터링하여 사고방지 및 신속한 사고 대응을 할 수 있는 인공지능 모델을 개발하는 연구이다.

• Journal of KIISE:Databases
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• v.31 no.5
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• pp.505-515
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• 2004

One of the most important issue in location-aware computing is tracking moving objects efficiently. To this end, an efficient protocol which updates location information in a location server is highly needed. In fact, the performance of a location update strategy highly depends on the assumed mobility pattern. In most existing works, however, the mobility issue has been disregarded and too simplified as linear function of time. In this paper, we propose a new mobility model, called state-based mobility model (SMM) to provide more generalized framework for both describing the mobility and updating location information of complexly moving objects. We also introduce the state-based location update protocol (SLUP) based on this mobility model. Using experimental comparison, we illustrate that the proposed technique is many times better in reducing location update cost and the communication bandwidth consumption.