Fuzzy Pattern Classification Research Articles

Analytic deliberation approach for collaborative determination of impact significance of projects in dispute, a case study in Mexico

The determination of impact significance is a critical step in Environmental Impact Assessment (EIA). Yet, the notion of impact significance is inherently subjective, immersed in uncertainty, and influenced by competing interests. This article addresses the difficult task of collaboratively determining the significance of the environmental impacts of projects in dispute. We introduce an approach centered on analytic deliberation that entails three steps: analysis, translation, and deliberation. Analysis combines and synthesizes impact significance into a single index using a fuzzy pattern classification algorithm, which also integrates the inherent uncertainty of impact assessment. Translation transforms the index into understandable and accessible spatial representations through geovisualization. Deliberation promotes safe spaces for collaboration in which stakeholders examine evidence openly and reflect on the conflicting values underlying their perspectives. The outcome of the approach is a compromise on the most meaningful representation of impact significance, if one exists, as the basis for agreement on the appropriate prevention, mitigation, and compensation measures of a project. Hence, it helps to reach agreement on the impact prevention, mitigation, and compensation strategy prior to the consultation process required by law in most countries. We illustrate our approach through an example from Mexico.

Integrating human cognition in cyber-physical systems: A multidimensional fuzzy pattern model with application to thermal spraying

The development of next-generation, intelligent manufacturing relies on the realization of human-cyber-physical systems. This key area of transdisciplinary research seeks to interrogate ways of supporting and integrating human cognition and expertise in complex cyber-physical systems, using modelling methods from artificial intelligence. This paper uses the exemplar of wear classification in thermal spraying to outline how relevant cognitive processes can be elicited and combined with technical variables in a singular, efficient and cognitively plausible modelling framework. To this end, eye tracking and high-resolution voltage measurements were performed in a pilot study, and a representative data set was generated for small data problems. Two multidimensional fuzzy pattern classification models were derived. Results show that both human and technical models are significant and complement one another. While the models still require optimizing, they clearly show that the integrative approach is practicable and fruitful. Our findings call for further transdisciplinary research of the development of cognitive assistance as well as predictive maintenance and quality assurance.

IRIS RECOGNITION USING WAVELET TRANSFORM AND SVM BASEDAPPROACH

Inthis paper we proposed an improved novel approachto identify the person using iris recognition technique. Thisapproach is based on fuzzy and support vector machine (SVM) asan iris pattern classifier. Prior to classifier, region of interest i.e.iris region is segmented using Canny edge detector and Houghtransform. Provided that the effect of eyelid and eyelashes getreduced. Daugman’s rubber sheet model used to get normalized iristo improve computational efficiency and proper dimensionality.Further, discriminating feature sequence is obtained by featureextraction from segmented iris image using 1D Log Gaborwavelet.Encoding is done using phase quantization to get featurevectors. These binary sequence feature vectors are used to trainSVM and fuzzy system as iris pattern classifier. The experimentaltests are performed over standard CASIAIrisV4 database.

A novel fuzzy convolutional neural network for recognition of handwritten Marathi numerals

Pattern classification is the approach of designing a method to map the inputs to the matching output classes. A novel fuzzy convolutional neural network (FCNN) is proposed in this paper for recognition of handwritten Marathi numerals. FCNN uses fuzzy set hypersphere as a pattern classifier to map inputs to classes represented by the combination of the fuzzy set hypersphere. Given labelled classes, the model designed proved efficient with 100% accuracy on the training set. The two major factors which improve the learning algorithm of FCNN are: 1) extract the dominant features from numeral image patterns using customised convolutional neural network (CCNN); 2) supervised clustering is used to create a new fuzzy hypersphere based on its distance measurement learning rules of fuzzy hypersphere neural network (FHSNN) and pattern classification done by the fuzzy membership function. Performance evaluation of model is done on Marathi numerals large datasets and its performance is found to be superior to traditional convolutional neural network (CNN) model. The obtained results demonstrate the fact that FCNN learning rules can be used as a useful representation for different classification pattern problems.

A novel fuzzy convolutional neural network for recognition of handwritten Marathi numerals

Pattern classification is the approach of designing a method to map the inputs to the matching output classes. A novel fuzzy convolutional neural network (FCNN) is proposed in this paper for recognition of handwritten Marathi numerals. FCNN uses fuzzy set hypersphere as a pattern classifier to map inputs to classes represented by the combination of the fuzzy set hypersphere. Given labelled classes, the model designed proved efficient with 100% accuracy on the training set. The two major factors which improve the learning algorithm of FCNN are: 1) extract the dominant features from numeral image patterns using customised convolutional neural network (CCNN); 2) supervised clustering is used to create a new fuzzy hypersphere based on its distance measurement learning rules of fuzzy hypersphere neural network (FHSNN) and pattern classification done by the fuzzy membership function. Performance evaluation of model is done on Marathi numerals large datasets and its performance is found to be superior to traditional convolutional neural network (CNN) model. The obtained results demonstrate the fact that FCNN learning rules can be used as a useful representation for different classification pattern problems.

The Emergence of Fuzzy Sets in the Decade of the Perceptron—Lotfi A. Zadeh’s and Frank Rosenblatt’s Research Work on Pattern Classification

In the 1950s, the mathematically oriented electrical engineer, Lotfi A. Zadeh, investigated system theory, and in the mid-1960s, he established the theory of Fuzzy sets and systems based on the mathematical theorem of linear separability and the pattern classification problem. Contemporaneously, the psychologist, Frank Rosenblatt, developed the theory of the perceptron as a pattern recognition machine based on the starting research in so-called artificial intelligence, and especially in research on artificial neural networks, until the book of Marvin L. Minsky and Seymour Papert disrupted this research program. In the 1980s, the Parallel Distributed Processing research group requickened the artificial neural network technology. In this paper, we present the interwoven historical developments of the two mathematical theories which opened up into fuzzy pattern classification and fuzzy clustering.

Multidimensional fuzzy pattern classifier sequences for medical diagnostic reasoning

For about 50 years, fuzzy modelling methods have prevailed in the effective treatment of vagueness and uncertainty employing scientific and real-world applications. In this paper, we propose a modelling method using multidimensional fuzzy patterns based on parametric membership functions of the potential type. We outline methodological advantages, such as the preservation of the same highly flexible and efficient membership function type in one- and multidimensional modelling and fuzzy pattern classifier sequences. Furthermore, the model accounts for cognitive aspects of human reasoning, for instance, in knowledge organization and working memory processes. We argue that this methodology is particularly convenient for modelling issues in human–machine interactions and human sciences, such as medicine, and present two multidimensional fuzzy pattern models for infectious diseases.

Adaptive fuzzy pattern classification for the online detection of driver lane change intention

In this paper we introduce a new fuzzy system using adaptive fuzzy pattern classification (AFPC) for data-based online evolvement. The fuzzy pattern concept represents an efficient tool for handling uncertainty in multi-dimensional data streams and combines powerful performance, flexibility and meaningful interpretability within one consistent framework. We outline AFPC for non-linear, multi-dimensional transition processes, namely, for the identification of lane change intention in car driving. While lane changes are rare, they are highly safety-relevant transition processes, showing high fuzziness and large individual and inter-individual variations (e.g., in lane change duration). The method employs a combined knowledge- and data-based approach, and the underlying fuzzy potential membership function concept models expert knowledge, closely mirroring human cognition. The design of AFPC comprises (I) an initial training phase (off-line and supervised), which generates a meaningful start-classifier, (II) an online application phase, and finally (III) an evolvement phase (online and unsupervised). Here we consider parametric and structural adaptations and discuss prospects and future challenges. Furthermore, we present specific modeling results for such online data from a real driving study. Next-generation advanced driver assistance systems, as well as autonomously driven vehicles need to evolve, in terms of parameters and structure, based on online real-time data. AFPC presents an efficient tool for application in this area and others (e.g., medicine).

퍼지 클러스터링기반 신경회로망 패턴 분류기의 학습 방법 비교 분석

In this paper, we introduce a novel learning methodology of fuzzy clustering-based neural network pattern classifier. Fuzzy clustering-based neural network pattern classifier depicts the patterns of given classes using fuzzy rules and categorizes the patterns on unseen data through fuzzy rules. Least squares estimator(LSE) or weighted least squares estimator(WLSE) is typically used in order to estimate the coefficients of polynomial function, but this study proposes a novel coefficient estimate method which includes advantages of the existing methods. The premise part of fuzzy rule depicts input space as “If” clause of fuzzy rule through fuzzy c-means(FCM) clustering, while the consequent part of fuzzy rule denotes output space through polynomial function such as linear, quadratic and their coefficients are estimated by the proposed local least squares estimator(LLSE)-based learning. In order to evaluate the performance of the proposed pattern classifier, the variety of machine learning data sets are exploited in experiments and through the comparative analysis of performance, it provides that the proposed LLSE-based learning method is preferable when compared with the other learning methods conventionally used in previous literature.

계층적 구조를 가진 퍼지 패턴 분류기 설계

본 논문은 단순한 후반부 구조를 가진 퍼지 모델을 계층적 구조로 결합한 퍼지 패턴 분류기를 제안한다. 계층적 구조를 가진 퍼지 패턴 분류기의 기본 구조는 단순한 후반부 구조를 가진 퍼지 모델을 사용하여 전체 패턴 분류기의 구조적 복잡성을 높이지 않도록 설계 하였다. 입력공간을 계층적으로 분할하기 위하여 대표적인 퍼지 클러스터링 알고리즘인 Fuzzy C-Means clustering 기법을 이용하였다. 분할된 퍼지 입력 공간의 하위 구조를 분석하기 위하여 conditional Fuzzy C-Means 클러스터링 기법을 이용하였다. 계층적으로 분할된 퍼지 입력공간에 간단한 구조를 가진 퍼지 패턴 분류기를 적용하여 계층적 구조를 가진 패턴 분류기를 설계한다. 계층적으로 퍼지 모델들을 결합함으로써 입력 공간의 정보 분석을 거시적인 관점에서 시작하여 세부적으로 분석이 가능하게 되었다. 제안된 퍼지 패턴 분류기의 성능을 평가하기 위하여 다양한 기계 학습 데이터를 사용하였다. In this paper, we proposed the new fuzzy pattern classifier which combines several fuzzy models with simple consequent parts hierarchically. The basic component of the proposed fuzzy pattern classifier with hierarchical structure is a fuzzy model with simple consequent part so that the complexity of the proposed fuzzy pattern classifier is not high. In order to analyze and divide the input space, we use Fuzzy C-Means clustering algorithm. In addition, we exploit Conditional Fuzzy C-Means clustering algorithm to analyze the sub space which is divided by Fuzzy C-Means clustering algorithm. At each clustered region, we apply a fuzzy model with simple consequent part and build the fuzzy pattern classifier with hierarchical structure. Because of the hierarchical structure of the proposed pattern classifier, the data distribution of the input space can be analyzed in the macroscopic point of view and the microscopic point of view. Finally, in order to evaluate the classification ability of the proposed pattern classifier, the machine learning data sets are used.

Fuzzy Pattern Classification Based Detection of Faulty Electronic Fuel Control (EFC) Valves Used in Diesel Engines

In this paper, we develop mathematical models of a rotary Electronic Fuel Control (EFC) valve used in a Diesel engine based on dynamic performance test data and system identification methodology in order to detect the faulty EFC valves. The model takes into account the dynamics of the electrical and mechanical portions of the EFC valves. A recursive least squares (RLS) type system identification methodology has been utilized to determine the transfer functions of the different types of EFC valves that were investigated in this study. Both in frequency domain and time domain methods have been utilized for this purpose. Based on the characteristic patterns exhibited by the EFC valves, a fuzzy logic based pattern classification method was utilized to evaluate the residuals and identify faulty EFC valves from good ones. The developed methodology has been shown to provide robust diagnostics for a wide range of EFC valves.

차분 진화 알고리즘을 이용한 Fuzzy Prototype Classifier 최적화

본 논문에서는 입력 공간의 부분 영역의 특성을 기술하기 위하여 각 부분 영역을 대표하는 prototype을 정의하고 정의된 Prototype 에 가중치를 적용하여 각 부분 영역이 각 클래스의 경계면에 미치는 영향을 차등화 하는 Fuzzy Prototype 분류기를 제안 한다. 제안된 패턴 분류기의 Prototype은 퍼지 클러스터링 알고리즘인 Fuzzy C-Means Clustering 알고리즘을 사용하여 결정한다. 또한, 각 부분 영역의 가중치를 결정하기 위하여 유전자 알고리즘에서 파생된 차분 진화 알고리즘을 적용하여 각각의 퍼지 규칙의 가중치를 최적화 한다. 또한 퍼지 규칙 기반 시스템 기반 패턴 분류기의 경우 각각의 퍼지 규칙의 후반부 구조인 다항식의 계수를 추정하기 위하여 Linear Discriminant Analysis를 사용한다. 마지막으로, 본 논문에서 제안한 패턴 분류기의 패턴 분류 특성 및 성능을 평가하기위하여 기계 학습 데이터를 사용한다. In this paper, we proposed the fuzzy prototype pattern classifier. In the proposed classifier, each prototype is defined to describe the related sub-space and the weight value is assigned to the prototype. The weight value assigned to the prototype leads to the change of the boundary surface. In order to define the prototypes, we use Fuzzy C-Means Clustering which is the one of fuzzy clustering methods. In order to optimize the weight values assigned to the prototypes, we use the Differential Evolutionary Algorithm. We use Linear Discriminant Analysis to estimate the coefficients of the polynomial which is the structure of the consequent part of a fuzzy rule. Finally, in order to evaluate the classification ability of the proposed pattern classifier, the machine learning data sets are used.

Credit Risk Prediction Using Fuzzy Immune Learning

The use of credit has grown considerably in recent years. Banks and financial institutions confront credit risks to conduct their business. Good management of these risks is a key factor to increase profitability. Therefore, every bank needs to predict the credit risks of its customers. Credit risk prediction has been widely studied in the field of data mining as a classification problem. This paper proposes a new classifier using immune principles and fuzzy rules to predict quality factors of individuals in banks. The proposed model is combined with fuzzy pattern classification to extract accurate fuzzy if-then rules. In our proposed model, we have used immune memory to remember good B cells during the cloning process. We have designed two forms of memory: simple memory andk-layer memory. Two real world credit data sets in UCI machine learning repository are selected as experimental data to show the accuracy of the proposed classifier. We compare the performance of our immune-based learning system with results obtained by several well-known classifiers. Results indicate that the proposed immune-based classification system is accurate in detecting credit risks.

Indirect downscaling of hourly precipitation based on atmospheric circulation and temperature

Abstract. The main source of information on future climate conditions are global circulation models (GCMs). While the various GCMs agree on an increase of surface temperature, the predictions for precipitation exhibit high spread among the models, especially in shorter-than-daily temporal resolution. This paper presents a method to predict regional distributions of the hourly rainfall depth based on daily mean sea level pressure and temperature data. It is an indirect downscaling method avoiding uncertain precipitation data from the GCM. It is based on a fuzzy logic classification of atmospheric circulation patterns (CPs) that is further subdivided by means of the average daily temperature. The observed empirical distributions at 30 rain gauges to each CP-temperature class are assumed as constant and used for projections of the hourly precipitation sums in the future. The method was applied to the CP-temperature sequence derived from the 20th-century run and the scenario A1B run of ECHAM5. For the study region in southwestern Germany ECHAM5 predicts that the summers will become progressively drier. Nevertheless, the frequency of the highest hourly precipitation sums will increase. According to the predictions, estival water stress and the risk of extreme hourly precipitation will both increase simultaneously during the next decades. However, the results are yet to be confirmed by further \\mbox{investigation} based on other GCMs.

Application of Electronic Nose Technology in Breath Tests for Patients with Diabetes

The study established a set of gas detectors that helped transform exhaled breath into electronic signals, and through wave filtering, A/D transformation, and feature extraction. The fuzzy pattern classification system was then adopted to analyze and recognize the acetone level in breathing to diagnose whether someone has diabetes.

A Novel Fuzzy Rough Granular Neural Network for Classification

A novel fuzzy rough granular neural network (NFRGNN) based on the multilayer perceptron using back-propagation algorithm is described for fuzzy classification of patterns. We provide a development strategy of knowledge extraction from data using fuzzy rough set theoretic techniques. Extracted knowledge is then encoded into the network in the form of initial weights. The granular input vector is presented to the network while the target vector is provided in terms of membership values and zeros. The superiority of NFRGNN is demonstrated on several real life data sets.

Fuzzy rough granular neural networks, fuzzy granules, and classification

We introduce a fuzzy rough granular neural network (FRGNN) model based on the multilayer perceptron using a back-propagation algorithm for the fuzzy classification of patterns. We provide the development strategy of the network mainly based upon the input vector, initial connection weights determined by fuzzy rough set theoretic concepts, and the target vector. While the input vector is described in terms of fuzzy granules, the target vector is defined in terms of fuzzy class membership values and zeros. Crude domain knowledge about the initial data is represented in the form of a decision table, which is divided into subtables corresponding to different classes. The data in each decision table is converted into granular form. The syntax of these decision tables automatically determines the appropriate number of hidden nodes, while the dependency factors from all the decision tables are used as initial weights. The dependency factor of each attribute and the average degree of the dependency factor of all the attributes with respect to decision classes are considered as initial connection weights between the nodes of the input layer and the hidden layer, and the hidden layer and the output layer, respectively. The effectiveness of the proposed FRGNN is demonstrated on several real-life data sets.

A Novel Fuzzy Rough Granular Neural Network for Classification

A novel fuzzy rough granular neural network (NFRGNN) based on the multilayer perceptron using backpropagation algorithm is described for fuzzy classification of patterns. We provide a development strategy of knowledge extraction from data using fuzzy rough set theoretic techniques. Extracted knowledge is then encoded into the network in the form of initial weights. The granular input vector is presented to the network while the target vector is provided in terms of membership values and zeros. The superiority of NFRGNN is demonstrated on several real life data sets.

Fuzzy Pattern Recognition Based on Symmetric Fuzzy Relative Entropy

Based on fuzzy similarity degree, entropy, relative entropy and fuzzy entropy, the symmetric fuzzy relative entropy is presented, which not only has a full physical meaning, but also has succinct practicability. The symmetric fuzzy relative entropy can be used to measure the divergence between different fuzzy patterns. The example demonstrates that the symmetric fuzzy relative entropy is valid and reliable for fuzzy pattern recognition and classification, and its classification precision is very high.

패턴분류를 위한 온톨로지 기반 퍼지 분류기

최근, 패턴분류에 온톨로지를 이용하려는 연구가 다양한 분야에서 시도되고 있다. 그러나 대부분의 이러한 연구에서는 패턴분류 관련 지식을 표현한 온톨로지지가 패턴분류 과정에서 단순히 참조되는 수준에 머물고 있다. 본 논문에서는 퍼지 규칙기반 분류기를 확장한 온톨로지 기반 퍼지 분류기를 제안한다. 이를 위해 퍼지규칙 기반 패턴분류 방법을 개념화하여 온톨로지를 구성하고, 패턴분류를 위한 온톨로지 추론 규칙을 생성한다. 그리고 IRIS 데이터집합의 패턴분류 실험을 통해 온톨로지 기반 퍼지 분류기의 타당성을 보인다. Recently, researches on ontology-based pattern classification have been tried out in many fields. However, in most of the researches, the ontology which represents the knowledge about pattern classification is just referred during the processes of the pattern classification. In this paper, we propose ontology-based fuzzy classifier for pattern classification which is extended from the fuzzy rule-based classifier In order to realize the proposed classifier, we construct an ontology by conceptualizing the method of fuzzy rule-based pattern classification and generate ontology inference rules for pattern classification. Lastly, we show the validity o) the proposed classifier through the experiment of pattern classification on the Fisher's IRIS dataset.