• 정보보호학회논문지
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• 제12권3호
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• pp.129-139
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• 2002

인터넷의 확장에 따라서 네트워크를 통한 침입이 증가되고 있다. 이에 따라 네트워크를 통한 침입에 대하여 즉각적으로 탐지하고 대처하는 기술이 필요하게 되었다. 본 논문은 인터넷의 특성을 악용하여 침입하는 공격들을 탐지하기 위하여 Adaptive Resonance Theory2(ART2) 이론을 이용한다. 정상적인 packet과 여러 가지 공격툴을 사용하여 생산한 인위적인 공격 패킷에 대하여 ART2를 학습한 후 실험한 결과와 기존의 방식들과 비교 분석하였다.

• 한국정보보호학회:학술대회논문집
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• 한국정보보호학회 2001년도 종합학술발표회논문집
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• pp.43-47
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• 2001

본 논문은 신경망 이론중 하나인 Adaptive Resonance Theory(ART)을 사용하여 네트워크 상의 불법적인 침입을 탐지하는 기법에 대한 연구이다. ART는 비교사 학습을 하는 신경망으로써, 적응적인 학습능력이 있으며, 또 새로운 패턴에 대해서 새로운 클러스터를 생산하는 능력이 있다. ART의 이러한 특성을 이용하여, 여러 가지 침입패턴을 네트워크상에서 생산하여 학습을 시키고, 또 test 했으며, test 이후에도 on-line 상에서 새로운 공격 pattern도 찾아냄을 보였다. 따라서, 이미 알려진 침입뿐만 아니라 새롭게 발생하는 침입 기법에 대해서도 새로운 rule의 첨가 없이 적극적으로 대처할 수 있을 것으로 예측된다.

• 한국지능시스템학회논문지
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• 제13권2호
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• pp.237-242
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• 2003

본 논문에서는 클러스터링을 기반으로 하는 새로운 침입탐지 알고리즘인 Kernel-ART를 제안한다. Kernel-ART는 개념벡터(concept vector)와 SVM(support vector machine)의 머서 커널(mercer-kernel)을 온라인 클러스터링 알고리즘인 ART(adaptive resonance theory)에 접목시킨 새로운 알고리즘으로서 교사학습 기반 침입탐지 시스템의 단점을 극복할 뿐만 아니라, 클러스터링 기반 침입탐지 시스템에서 요구되는 모든 평가 기준들을 만족한다. 본 논문에서 제안하는 알고리즘은 클러스터를 점증적으로 생성함으로써 여러 가지 다양한 침입 유형들을 실시간으로 탐지할 수 있다.

• 전자공학회논문지B
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• 제33B권3호
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• pp.79-87
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• 1996

A new method for recognizing and locating partially occluded or overlapped two-dimensional objects regardless of their size, translation, and rotation, is presented. Dominant points approximating occuluding contoures of objects are generated by finding local maxima of smoothed k-cosine function, and then used to guide the contour segment matching procedure. Primitives between the dominant points are produced by projecting the local contours onto the line between the dominant points. Robust classification of primitives. Which is crucial for reliable partial shape matching, is performed using adaptive resonance theory (ART2). The matched primitives having similar scale factors and rotation angles are detected in the hough space to identify the presence of the given model in the object scene. Finally the translation vector is estimated by minimizing the mean squred error of the matched contur segment pairs. This model-based matching algorithm may be used in diveerse factory automation applications since models can be added or changed simply by training ART2 adaptively without modifying the matching algorithm.

• Journal of information and communication convergence engineering
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• 제20권3호
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• pp.153-159
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• 2022

Plain radiographic analysis is the initial imaging modality for suspected small bowel obstruction. Among the many features that affect the diagnosis of small bowel obstruction (SBO), the presence of gas-filled or fluid-filled small bowel loops is the most salient feature that can be automatized by computer vision algorithms. In this study, we compare three frequently applied pixel-clustering algorithms for extracting gas-filled areas without human intervention. In a comparison involving 40 suspected SBO cases, the Possibilistic C-Means and Fuzzy C-Means algorithms exhibited initialization-sensitivity problems and difficulties coping with low intensity contrast, achieving low 72.5% and 85% success rates in extraction. The Adaptive Resonance Theory 2 algorithm is the most suitable algorithm for gas-filled region detection, achieving a 100% success rate on 40 tested images, largely owing to its dynamic control of the number of clusters.

• The Korean Journal of Ecology
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• 제23권2호
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• pp.89-100
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• 2000

On community data. sampled in regular intervals on a long-term basis. artificial neural networks were implemented to extract information on characterizing patterns of community changes. The Adaptive Resonance Theory and Kohonen Network were both utilized in learning benthic macroinvertebrate communities in the Soktae Stream of the Suyong River collected monthly for three years. Initially, by regarding each monthly collection as a separate sample unit, communities were grouped into similar patterns after training with the networks. Subsequently, changes in communities in a sequence of samplings (e.g., two-month, four-month, etc.) were given as input to the networks. After training, it was possible to recognize new data set in line with the sampling procedure. Through the comparative study on benthic macroinvertebrates with these learning processes, patterns of community changes in chironomids diverged while those of the total benthic macro-invertebrates tended to be more stable.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2003년도 춘계학술발표논문집 (상)
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• pp.603-606
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• 2003

본 논문에서는 ART(Adaptive Resonance Theory) 신경회로망을 이용하여 한글 모음을 인식하고, 그 유형을 분류하는 방법을 제안하였다. 기존의 연구들은 단순히 문자의 선분, 획 등의 정합만을 이용하여 한글의 자소 분류에 중점을 두었다. 그러나 인식 대상 운자의 특성이 각각 다르므로 효율적인 인식을 위해서는 먼저 포괄적인 특정적 유형 분류가 필요하다. 제안된 한글 유형 분류 시스템에서는 먼저 ART 신경회로망의 문제점인 증가분류 알고리즘의 단점을 최소화할 수 있도록 비교층에 최초 활성화패턴의 크기를 기억하는 메모리를 두고 각 층간 하향틀 변화를 경계인수 값을 "1" 이내로 제한하여 이미 입력된 패턴을 다시 입력할 때, 새로운 노드의 활성화를 방지하여 비교적 입력순서에 둔감한 분류가 가능하였다. 실험 결과 제안된 시스템에서는 한글의 6형식 중 1, 3, 4, 5형식 분류는 평균 97.3% 의 분류율을 보였으나, 나머지 2, 6형식 분류는 다소 떨어지는 평균 94.9% 분류율를 보였다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2006년도 심포지엄 논문집 정보 및 제어부문
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• pp.93-95
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• 2006

In many control system applications, the system designed must not only satisfy the damping and accuracy specifications, but the control must also yield performance that is robust to external disturbance and parameter variations. We have shown that feedback in conventional control systems has the inherent ability of reducing the effects of external disturbance and parameter variations. Unfortunately, robustness with the conventional feedback configuration is achieved only with a high loop gain, which is normally detrimental to stability. The design of intelligent, autonomous machines to perform tasks that are dull, repetitive, hazardous, or that require skill, strength, or dexterity beyond the capability of humans is the ultimate goal of robotics research. This paper prove the robust control using Analog Adaptive Resonance Theorv(ART2) Algorithm about case study.

• 한국감성과학회:학술대회논문집
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• 한국감성과학회 2002년도 춘계학술대회 논문집
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• pp.195-200
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• 2002

ART (Adaptive Resonance Theory [1]) neural network and its variations perform non-hierarchical clustering by unsupervised learning. We propose a scheme "arboART" for hierarchical clustering by using several ART1.5-SSS networks. It classifies multidimensional vectors as a cluster tree, and finds features of clusters. The Basic idea of arboART is to use the prototype formed in an ART network as an input to other ART network that has looser distance criteria (Ishihara, et al., [2,3]). By sending prototype vectors made by ART to one after another, many small categories are combined into larger and more generalized categories. We can draw a dendrogram using classification records of sample and categories. We have confirmed its ability using standard test data commonly used in pattern recognition community. The clustering result is better than traditional computing methods, on separation of outliers, smaller error (diameter) of clusters and causes no chaining. This methodology is applied to Kansei evaluation experiment data analysis.

• 대한기계학회논문집
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• 제18권8호
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• pp.1939-1951
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• 1994

This study introduces a new tool breakage detecting technology comprised of an unsupervised neural network combined with adaptive time series autoregressive(AR) model where parameters are estimated recursively at each sampling instant using a parameter adaptation algorithm based on an RLS(Recursive Least Square). Experiment indicates that AR parameters are good features for tool breakage, therefore it can be detected by tracking the evolution of the AR parameters during milling process. an ART 2(Adaptive Resonance Theory 2) neural network is used for clustering of tool states using these parameters and the network is capable of self organizing without supervised learning. This system operates successfully under the wide range of cutting conditions without a priori knowledge of the process, with fast monitoring time.