There is a considerable noise in the measured signal of pressure and flow of a running pipeline due to friction drag and medium diffusion, which poses an obstacle to the quick detection and precise classification of p...
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There is a considerable noise in the measured signal of pressure and flow of a running pipeline due to friction drag and medium diffusion, which poses an obstacle to the quick detection and precise classification of pipeline leakage, especially to the acquiring of weak incipient fault. This paper offers an incipient fault detection method based on nonlinear manifold learning algorithm, which treats the negative pressure wave signal as transient signal and reduces noise of original signal by using multi-scale wavelet transform. The method also learns original fault signal and extracts the intrinsic manifold features of data by using a nonlinear dimensionality reduction algorithm based on Laplacian Eigenmaps. With this method, the identification efficiency of optimal fault characteristics is noticeably improved, and the advantage of this method has been proved by simulation experiments.
<正>We explain how to apply statistical techniques to solve several language recognition problems arising in many other *** model a language as a finite Markov process. This model has been specially adapted to suit ...
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<正>We explain how to apply statistical techniques to solve several language recognition problems arising in many other *** model a language as a finite Markov process. This model has been specially adapted to suit classification problems of natural *** supplement some parameters to the model for increasing in great accuracy.
In this paper, a new feature descriptor is presented and proposed for personal verification based on near infrared images of hand-dorsa veins. This new feature descriptor is a modification of the previously proposed p...
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In this paper, a new feature descriptor is presented and proposed for personal verification based on near infrared images of hand-dorsa veins. This new feature descriptor is a modification of the previously proposed partition local binary patterns (PLBP) by adding feature weighting and error correction coding (ECC). While addition of feature weighting aims to reduce the influence of insignificant local binary patterns, addition of ECC aims to increase the distances between feature classes by utilizing the systematic redundancy that has been widely used to achieve reliable data transmission in noisy channels. Using a large database with more than two thousand hand-dorsa vein images, the resulting new feature descriptor, named Coded and Weighted PLBP (WCPLBP), is shown to be more effective than the original PLBP without feature weighting and ECC, and offers a better performance in recognition of hand-dorsa vein images with a correct recognition rate reaching approximately 99% using a simple nearest neighbor classifier.
Fuzzy C-Means has been used as a popular fuzzy clustering method due to its simplicity and high speed in clustering large data sets. However, C-Means has two shortcomings: dependency on the initial state and convergen...
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Fuzzy C-Means has been used as a popular fuzzy clustering method due to its simplicity and high speed in clustering large data sets. However, C-Means has two shortcomings: dependency on the initial state and convergence to local optima. In this paper a new algorithm based on simulated annealing and possibilistic noise rejection clustering is proposed to reduce the problem of converging to local minima and dependency on initial states. The comparison of the proposed algorithms and some other algorithms in the literature shows that the algorithms outperforms other algorithms in terms of optimization objective function and is capable of doing clustering in noisy environments more efficiently.
In this paper, we propose an efficient algorithm for implementing the class-incremental kernel discriminative common vectors method via kernel method. One nonlinear discriminative common vector is computed for each cl...
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In this paper, we propose an efficient algorithm for implementing the class-incremental kernel discriminative common vectors method via kernel method. One nonlinear discriminative common vector is computed for each class by projecting a sample in each class onto the orthonormal nonlinear discriminative vector. The orthogonalization procedure is performed twice in feature space which is only involved computing a kernel matrix and performing Cholesky decomposition on the kernel matrix. Thus, the real-time performance of classification is guaranteed. The theoretical justification is presented in this paper.
The objective of semantic segmentation in microscopic images is to extract the cellular, nuclear or tissue components. This problem is challenging due to the large variations of these components features (size, shape,...
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The objective of semantic segmentation in microscopic images is to extract the cellular, nuclear or tissue components. This problem is challenging due to the large variations of these components features (size, shape, orientation or texture). In this paper we improve the technique presented in [17] used to identify the epithelial nuclei (crypt) against interstitial nuclei in microscopic images taken from colon tissues. In the proposed enhanced approach, the crypt inner boundary is detected using the closing morphological pyramid instead of morphological hierarchy. The outer crypt border is determined by the epithelial nuclei, overlapped by the maximal isoline of the inner boundary. The use of sampling in building the pyramid offers computational efficiency, reduces the amount of used memory, increase the robustness and preserve the quality results. An analysis of the two approaches is performed considering the number of pixels processed to create each level. Also the relation between the levels of the hierarchical structures is established.
With increasing concern on environmental contamination due to pipeline leak, the electronics industry is coming under increasing pressure to develop and apply automated inspection techniques for the inspection of weld...
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With increasing concern on environmental contamination due to pipeline leak, the electronics industry is coming under increasing pressure to develop and apply automated inspection techniques for the inspection of welding line of steel tubes and structural casting. Automatic X-ray inspection systems are taking the high cost out of production inspection for casting manufacturers who previously relied on manual inspection methods while simultaneously wiping out the drudgery and potential for human error common to manual inspection methods in processing and manufacturing applications. Based on the analysis of basics of X-ray Imaging Principle, the interactive process of automatic X-ray inspection was discussed and a new defect inspection method using top-hat operator was put forward. Lastly, this method is applied for many samples of X-ray images, and proved to be effective.
This paper presents a facial expression recognition approach to recognize the affective states. Feature extraction is a vital step in the recognition of facial expressions. In this work, a novel facial feature extract...
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This paper presents a facial expression recognition approach to recognize the affective states. Feature extraction is a vital step in the recognition of facial expressions. In this work, a novel facial feature extraction method based on Intersecting Cortical Model (ICM) is proposed. The ICM network which is a simplified model of Pulse-Coupled Neural Network (PCNN) model has great potential to perform pixel grouping. In the proposed method the normalized face image is segmented into two regions including mouth, eyes using fuzzy c-means clustering (FCM). Segmented face images are imported into an ICM network with 300 iteration number and pulse image produced by the ICM network is chosen as the face code, then the support vector machine (SVM) is trained for discrimination of different expressions to distinguish the different affective states. In order to evaluate the performance of the proposed algorithm, the face image dataset is constructed and the proposed algorithm is used to classify seven basic expressions including happiness, sadness, fear, anger, surprise and hate The experimental results confirm that ICM network has great potential for facial feature extraction and the proposed method for human affective recognition is promising. Fast feature extraction is the most advantage of this method which can be useful for real world application.
Importance of biological monitoring in river quality assessment was well understood and various systems were developed in 20th century. But most of them were based on scoring system and later use of Artificial Intelli...
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Importance of biological monitoring in river quality assessment was well understood and various systems were developed in 20th century. But most of them were based on scoring system and later use of Artificial Intelligence (AI) in River Quality Assessment was started. AI has wide scope in river quality assessment problem and few systems were developed to model human ways of reasoning and finding the river water quality from the ecological data. The paper discusses the approaches of AI which can model human way of solving the problem, namely Neural Networks and Expert System. In this paper system based on patternrecognition (SOM, MIR-Max, RPDS) and Bayesian belief network (RPBBN) were described. RPDS and RPBBN were developed at CEIS, Stafford shire University and have shown very good results as compared to previous systems. All the system developed so far are not able to explore the relationship between chemical, environmental and biological data set of ecological data of rivers. The scope for this in AI is also proposed for development of 3D data analysis system.
A new initial pattern library algorithm based upon variance and mean sorting for machine learning is *** first stage sorts the training vector set based on variance of pattern *** divide the training vector set equall...
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A new initial pattern library algorithm based upon variance and mean sorting for machine learning is *** first stage sorts the training vector set based on variance of pattern *** divide the training vector set equally into a number of segments, ***, sorts each subset by vector ***, selects a certain number of pattern vectors with an interval from the sorted subsets to form the initial pattern *** new initial pattern library algorithm has been tested by self-organizing maps (SOM ) *** results in image coding showed that this new initial pattern library is better than the commonlyused random sampling initial pattern library and random data setting initial pattern library.
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