Academia.edu no longer supports Internet Explorer.
To browse Academia.edu and the wider internet faster and more securely, please take a few seconds to upgrade your browser.
2004, Lecture Notes in Computer Science
This paper presents the design and application of a treestructured pattern classifier, built around a special class of linear Cellular Automata (CA), termed as Multiple Attractor CA (MACA). Since any non-trivial classification function is non-linear in nature, the principle of realizing the non-linear function with multiple (piece-wise) linear functions is employed. Multiple (linear) MACAs are utilized to address the classification of benchmark data used to evaluate the performance of a classifier. Extensive experimental results have established the potential of MACA based tree-structured pattern classifier. Excellent classification accuracy with low memory overhead and low retrieval time prove the superiority of the proposed pattern classifier over conventional algorithms.
Fundamenta Informaticae, 2003
This paper presents the theory and application of a high speed, low cost pattern classifier. The proposed classifier is built around a special class of sparse network referred to as Cellular Automata (CA). A specific class of CA, termed as Multiple Attractor Cellular Automata (MACA), has been evolved through Genetic Algorithm (GA) formulation to perform the task of pattern classification. The versatility of the classification scheme is illustrated through its application in three diverse fields -data mining, image compression, and fault diagnosis. Extensive experimental results demonstrate better performance of the proposed scheme over popular classification algorithms in respect of memory overhead and retrieval time with comparable classification accuracy. Hardware architecture of the proposed classifier has been also reported.
Proceedings of the 8th International Conference on Pattern Recognition Applications and Methods, 2019
Data classification is a well studied problem where the aim is to identify the categories in the data based on a training set. Various machine learning methods have been utilized for the problem. On the other side, cellular automata have drawn the attention of researchers as the system provides a dynamic and a discrete model for computation. In this study a novel approach is proposed for the classification problem. The method is based on formation of classes in a cellular automata by the interaction of neighborhood cells. Initially, the training data instances are assigned to the cells of a cellular automaton. The state of a cell denotes the class assignment of that point in the instance space. At the beginning of the process, only the cells that have a data instance have class assignments. However, these class assignments are spread to the neighbor cells based on a rule inspired by the heat transfer process in nature. The experiments carried out denote that the model can identify the categories in the data and promising results have been obtained.
IEICE Transactions on Information and Systems, 2005
This paper investigates the application of the computational model of Cellular Automata (CA) for pattern classification of real valued data. A special class of CA referred to as Fuzzy CA (FCA) is employed to design the pattern classifier. It is a natural extension of conventional CA, which operates on binary string employing boolean logic as next state function of a cell. By contrast, FCA employs fuzzy logic suitable for modeling real valued functions. A matrix algebraic formulation has been proposed for analysis and synthesis of FCA. An efficient formulation of Genetic Algorithm (GA) is reported for evolution of desired FCA to be employed as a classifier of datasets having attributes expressed as real numbers. Extensive experimental results confirm the scalability of the proposed FCA based classifier to handle large volume of datasets irrespective of the number of classes, tuples, and attributes. Excellent classification accuracy has established the FCA based pattern classifier as an efficient and cost-effective solutions for the classification problem.
2013 International Conference on High Performance Computing & Simulation (HPCS), 2013
This paper addresses a detail characterization of the one-dimensional two-state 3-neighborhood asynchronous cellular automata (ACA) having multiple fixed-point attractors with the target to model this class of CA for designing efficient pattern classifier. The cells of ACA are independent, and they are updated independently. When an ACA cell is updated, it reads the states of its neighbors and then updates its state following the state transition function. The ACA rules are characterized considering an arbitrary cell is updated in each time step. A theorem is designed for the identification of ACA with only fixed-point attractors. From this theorem we get 146 out of 256 ACA in two-state 3-neighborhood interconnection which always approach towards fixed-Point attractors. To identify individual fixed-point attractors, a directed graph, namely Fixed-point graph (FPG) is proposed. The FPG guides us to point out the ACA having multiple fixed-points attractors. There are 83 such ACA (out of 146 ACA with only fixed-point attractors) that are utilized to design efficient pattern classifier. Finally, the proposed classifier is tested with real-life data sets, and it is observed that the performance of the proposed ACA based classifier is always better than that of traditional CA based classifier and is also better than many other well-known pattern classifiers. Index Terms-Cellular automata model, asynchronous cellular automata (ACA), fixed-point attractor, Fixed-point graph (FPG), pattern classifier.
2012
Data classification is a process that can categorize data to achieve the relationship between attributes and extract the suitable rules for prediction process. There are different learning methods in machine learning of which each has both advantages and disadvantages. Each type provides a better and interesting position, data and special structure. These methods have differences in the manner of implementation, understandability and speed of response and each is included in a special field of the data classification. Learning process in machine learning is the most important part which causes to elevate the power of a model and can learn the trained problem more quickly and work with it. In this paper, it will present a new method for data classification by Cellular Learning Automata. This method includes three stages. In order to show the power of this model, we have tested it on several types of online dataset and study it in terms of the learning speed, accuracy and simplicity i...
International Journal of Pattern Recognition and Artificial Intelligence, 2002
This paper reports an efficient technique of evolving Cellular Automata (CA) as an associative memory model. The evolved CA termed as GMACA (Generalized Multiple Attractor Cellular Automata), acts as a powerful pattern recognizer. Detailed analysis of GMACA rules establishes the fact that the rule subspace of the pattern recognizing CA lies at the edge of chaos — believed to be capable of executing complex computation.
IEEE Transactions on Systems, Man and Cybernetics, Part B (Cybernetics), 2004
This paper reports a cellular automata (CA) based model of associative memory. The model has been evolved around a special class of CA referred to as generalized multiple attractor cellular automata (GMACA). The GMACA based associative memory is designed to address the problem of pattern recognition. Its storage capacity is found to be better than that of Hopfield network. The GMACA are configured with nonlinear CA rules that are evolved through genetic algorithm (GA). Successive generations of GA select the rules at the edge of chaos [1], [2]. The study confirms the potential of GMACA to perform complex computations like pattern recognition at the edge of chaos.
Fundamenta Informaticae, 2007
A hybrid learning algorithm, termed as RBFFCA, for the solution of classification problems with real valued inputs is proposed. It comprises an integration of the principles of radial basis function (RBF) and fuzzy cellular automata (FCA). The FCA has been evolved through genetic algorithm (GA) formulation to perform pattern classification task. The versatility of the proposed hybrid scheme is illustrated through its application in diverse fields. Simulation results conducted on benchmark database show that the hybrid pattern classifier achieves excellent performance both in terms of classification accuracy and learning efficiency. Extensive experimental results supported with analytical formulation establish the effectiveness of RBFFCA based pattern classifier and prove it as an efficient and cost-effective alternative for the classification problem.
CA has grown as potential classifier for addressing major problems in bioinformatics. Lot of bioinformatics problems like predicting the protein coding region, finding the promoter region, predicting the structure of protein and many other problems in bioinformatics can be addressed through Cellular Automata. Even though there are some prediction techniques addressing these problems, the approximate accuracy level is very less. An automated procedure was proposed with MACA (Multiple Attractor Cellular Automata) which can address all these problems. The genetic algorithm is also used to find rules with good fitness values. Extensive experiments are conducted for reporting the accuracy of the proposed tool. The average accuracy of MACA when tested with ENCODE, BG570, HMR195, Fickett and Tongue, ASP67 datasets is 78%.
Computing Research Repository, 2009
This paper presents a classification of Cellular Automata rules based on its properties at the nth iteration. Elaborate computer program has been designed to get the nth iteration for arbitrary 1-D or 2-D CA rules. Studies indicate that the figures at some particular iteration might be helpful for some specific application. The hardware circuit implementation can be done using opto-electronic components [1-7].
Cellular Automata, 2002
This paper reports the design of a Cellular Automata Machine (CAM) to ad-dress the problem of Pattern Recognition. The design is based on an elegant computing model of a particular class of Cellular Automata (CA) referred to as Generalized Multiple Attractor CA (GMACA). The ...
Emerging Applications of Cellular Automata, 2013
… , 2008. ICDIM 2008. …, 2008
Complexity, 2016
This article designs an efficient two‐class pattern classifier utilizing asynchronous cellular automata (ACAs). The two‐state three‐neighborhood one‐dimensional ACAs that converge to fixed points from arbitrary seeds are used here for pattern classification. To design the classifier, (1) we first identify a set of ACAs that always converge to fixed points from any seeds, (2) each ACA should have at least two but not huge number of fixed point attractors, and (3) the convergence time of these ACAs are not to be exponential. To address the second issue, we propose a graph, coined as fixed point graph of an ACA that facilitates in counting the fixed points. We further perform an experimental study to estimate the convergence time of ACAs, and find there are some convergent ACAs which demand exponential convergence time. Finally, we identify there are 73 (out of 256) ACAs which can be effective candidates as pattern classifier. We use each of the candidate ACAs on some standard datasets...
Lecture Notes in Computer Science, 2005
As the possibility of combining different classifiers into Multiple Classifier System (MCS) becomes an important direction in machine-learning, difficulties arise in choosing the appropriate classifiers to combine and choosing the way for combining their decisions. Therefore in this paper we present a novel approach -Classificational Cellular Automata (CCA). The basic idea of CCA is to combine different classifiers induced on the basis of various machine-learning methods into MCS in a non-predefined way. After several iterations of applying adequate transaction rules only a set of the most appropriate classifiers for solving a specific problem is preserved.
2008
The paper reports a scalable evolutionary design for pattern recognition using Multiple Attractor Cellular Automata (M ACA). M ACA helps to impart non-linearity in the classifier using Hamming distance based attractors. Isomorphism in M ACA was exploited to make the method scalable to large classification problems involving non-linear boundaries. Extensive experimentation was performed on datasets with different topologies to establish the efficacy of the proposed method as compared to existing popular approaches like support vector machines. The classifier was applied to satellite image analysis problem. Experiments on different types of data sets were performed to discover the classifier's feature selection capabilities.
2009
Cellular Automata (CA) is a discrete dynamical system consists of an array of identically programmed automata, or cells, which interact with one another in a neighborhood relationship and have definite state. It can be used to show how the elements of a system interact with each other. It has a complex and varied behavior whose behavior is completely specified in terms of a local relation. Represented as a uniform grid, the time advances in discrete steps and the laws are expressed in a small lockup table through which at each step each cell computes its new state from that of its neighbors. With Data Mining deal with process of clustering and classification of large amounts of data and getting new knowledge from the data this paper introduce a new cellular automata classifier model. The practical experiments showed that our model run about twice times faster than the old model with high accuracy as we will see through this paper.
Cellular learning automata (CLA) is a distributed computational model which was introduced in the last decade. This model combines the computational power of the cellular automata with the learning power of the learning automata. Cellular learning automata is composed from a lattice of cells working together to accomplish their computational task; in which each cell is equipped with some learning automata. Wide range of applications utilizes CLA such as image processing, wireless networks, evolutionary computation and cellular networks. However, the only input to this model is a reinforcement signal and so it cannot receive another input such as the state of the environment. In this paper, we introduce a new model of CLA such that each cell receives extra information from the environment in addition to the reinforcement signal. The ability of getting an extra input from the environment increases the computational power and flexibility of the model. We have designed some new algorithms for solving famous problems in pattern recognition and machine learning such as classification, clustering and image segmentation. All of them are based on the proposed CLA. We investigated performance of these algorithms through several computer simulations. Results of the new clustering algorithm shows acceptable performance on various data sets. CLA-based classification algorithm gets average precision 84% on eight data sets in comparison with SVM, KNN and Naive Bayes with average precision 88%, 84% and 75%, respectively. Similar results are obtained for semi-supervised classification based on the proposed CLA.
Data mining deals with clustering and classifying large amounts of data, in order to discover new knowledge from the existent data by identifying correlations and relationships between various data-sets. Cellular automata have been used before for classification purposes. This paper presents a cellular automata enhanced classification algorithm for data mining. Experimental results show that the proposed enhancement gives better performance in terms of accuracy and execution time than previous work using cellular automata.
2001
This paper reports a Cellular Automata (CA )model for pattern recognition.The special class of CA referred to as GMACA (Generalized Multiple Attractor Cellular Automata ),is employed to design the CA based associative memory for pattern recognition.The desired GMACA are evolved through the implementation of genetic algorithm (GA).An efficient scheme to ensure fast convergence of GA is also reported.Experimental results conform the fact that the GMACA based pattern recognizer is more powerful than the Hopfield network for memorizing arbitrary patterns.
Loading Preview
Sorry, preview is currently unavailable. You can download the paper by clicking the button above.