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An accurate detection of spectrum opportunities is a key factor in governing the efficient spectrum usage in a cognitive radio (CR) system. Energy detection based spectrum sensing has been widely used due to its ease of implementation with lower computational complexity; however, its robustness and performance are highly affected by the noise uncertainty. In the present work, a real time hardware...
In this paper, we present a proposed algorithm to classify brain MRI as tumor-free or tumor present. For computing difference between normal and abnormal MR images, a set of features is calculated. The number of features of the original feature set is reduced by rough set based K-means algorithm and classification of the dataset into tumor-free or tumor-present category has been done by support vector...
In traditional text sentiment analysis methods, text feature vector has the problem of high dimensionality and high sparseness. In view of this situation, we can cluster the similar words together and use the generated clusters to fit into a new dimension so that the text feature vector dimension will be decreased. By using Word2Vec tool and K-means clustering algorithm, this task can be completed...
Cardiac Arrhythmia is a disease dealing with improper beating of heart. The improper condition may be fast beating or slow beating associated with heart. This paper proposes a detection or prediction scheme in the type of cardiac arrhythmia disease. It uses a clustering approach and regression methodology. The clustering approach used is DBSCAN and for regression, multiclass logistic regression is...
This paper presents a novel adaptive resampling algorithm based on the clustering by fast search and find of density peaks (CFSFDP) algorithm and the synthetic minority oversampling technique (SMOTE), named DP-SMOTE. The essential idea of the proposed method is to use the improved CFSFDP algorithm to find the subclasses and removing noisy data automatically, and then to generate the minority samples...
Network traffic classification technique is currently a key part of network security systems. In recent years, some network traffic classification algorithms using machine learning based on packet and flow level features have been proposed, yet the results are frequently disappointing. On the one hand, obtaining a large, representative, training data set that is fully labeled to train a classifier...
Seeing the public of Bandung city as an active social media user, Bandung government provides channel in Twitter for citizen to report their complaints. In order to make the citizen complaint monitoring easier, there is a need to automatically detect the topics of complaint tweets (written in Indonesian language) in order to assist the government in managing the complaints reported. In this paper,...
With the evolution of large computer data, every corner of the society is filled with a variety of text information. Indeed, large data information that need manage by people has been unable to meet the rapid development of society. Therefore, the technology of efficient management and accurate positioning of vast quantities of text information has become a hot topic in the research community. In...
Fault diagnosis plays a crucial role to maintain healthy conditions in rotating machinery. This paper proposes a framework to detect new patterns of abnormal conditions in gearboxes, that would be associated to new faults. This is achieved through a Hybrid Heuristic Algorithm for Evolving Models in scenarios of Classification and Clustering (HHA-EMCC), which is a machine learning algorithm that can...
The numerical value discretization is an important task of the data preprocessing phase within the intelligent data analysis. This process allows us to reduce the number of values (among other advantages) with which techniques work, reducing the computational cost when it comes to working with large amounts of data. In this paper a numerical value discretization technique is proposed. Specifically,...
Recommender systems are becoming the crystal ball of the Internet because they can anticipate what the users may want, even before the users know they want it. However, the machine-learning algorithms typically involved in the training of such systems can be computationally expensive, and often may require several days for retraining. Here, we present a distributed approach for load-balancing the...
Feature representation plays an important role in text classification. Feature mapping based on labels information is an algorithm suitable for Binary Relevance. Compared with the conventional text representation, it makes the dimension of the text under control by means of word embedding. More importantly, it takes full advantage of the general characteristics of the label on text representation...
Face recognition has the perception of a solved problem, however when tested at the million-scale exhibits dramatic variation in accuracies across the different algorithms [11]. Are the algorithms very different? Is access to good/big training data their secret weapon? Where should face recognition improve? To address those questions, we created a benchmark, MF2, that requires all algorithms to be...
In order to improve booking tickets experience of the users of Railway Online Ticketing System and ensure the system normally running, Railway Online Ticketing System's users abnormality booking the tickets detection model based on the traditional K-Means and FP-Growth algorithm is proposed. Firstly, preliminary filter user features by the Random Forest Algorithm based on Spark MLlib to identify the...
Broad Learning System [1] proposed recently demonstrates efficient and effective learning capability. This model is also proved to be suitable for incremental learning algorithms by taking the advantages of random vector flat neural networks. In this paper, a modified BLS structure based on the K-means feature extraction is developed. Compared with the original broad learning system, acceptable performance...
In this work we derive a novel clustering scheme for hyperspectral pixels according to the material they sense. We utilize statistical correlations that pixels sensing the same material exhibit. Specifically, kernel learning is combined with a norm-one regularized canonical correlations framework that can perform data clustering on nonlinearly dependent data. To tackle the derived minimization formulation...
Classification is one of the most important applications and also key technology of Polarimetric SAR image interpretation, which mainly includes feature extraction and optimization of classifiers. For high resolution Polarimetric SAR images, the fine description and accurate classification becomes increasingly complex and difficult with a single feature or classifier. Thus, the selective ensemble...
This paper presents an approach to the update of land-cover maps by classifying Remote Sensing (RS) images in an unsupervised way. The proposed method assumes that: i) an old thematic map is available; ii) no ground truth data are available; iii) the source used to generate the available thematic map is unknown. To classify the most recent RS image available on the considered area, the method automatically...
In this paper, we recommend a novel method based on log-mean operator and stacked auto-encoder which is used in the change detection for synthetic aperture radar images. The approach detects the changed and unchanged areas by designing a stacked Auto-encoder. The main guideline is to produce a difference image (DI) through the log-mean operator, and then distinguish the changed and unchanged regions...
Content-based image retrieval technology is one of the most important research directions in modern image retrieval technology. With the development of deep learning, the effective features of image can be extracted by well-trained convolution neural networks (CNNs). Based on the extracted image features, we can measure the similarity between two images. Directly comparing image similarity on large...
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