The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Behavior-based recommendation algorithm is one class of the most important methods in recommendation systems. A variety of models are researched for a long time, such as collaborative filtering, graph-based models, matrix factorization and so on. Different characteristics in many aspects of these methods are also be analyzed. In this study, we design a new similarity measure from the perspective of...
Covering-based rough set (CRS) is a meaningful and important generalization of Pawlak's rough set theory. The primary goal of this paper is to extend the formal study to partial covering (PCov) in terms of the global granular computing model (global/2nd GrC model). The main focus is to investigate the “best” approximations, where “best” was used by Pawlak in his 1982 paper. The study includes a comparison...
A fast global minimization segmentation model based on total variation is presented around Functional modeling and algorithm constructing. Firstly, a new active contour model is developed by maximum a-posterior probability (MAP), and a total variation model based on gradient information is constructed by the hint of geodesic active contour (GAC) model. So the improved M-S segmentation model is given...
The rapid determination method of blood clinical biochemical indicators based on near infrared spectral (NIRS) analysis is an important research branch in health monitoring systems. In this paper, the rapid determination method and the optimal analysis model of serum cholesterol were established by using the NIRS technology, partial least squares (PLS) and Savitzky-Golay (SG) smoothing method. Based...
Quantum teleportation is a typical quantum circuit. We choose it as a benchmark circuit for the problem of quantum circuit synthesis. Genetic algorithm is introduced to synthesis the circuit. A simple coding scheme and the corresponding fitness function are proposed. The algorithm is implemented using Matlab's GA toolbox, and an optimized circuit structure is obtained.
For granular computing has advantage to handle a great deal of fuzzy information, it provides new thoughts for image segmentation. Firstly, the paper defines a new granular computing model, which is granular lattice matrix model. Secondly, we applied the model to image segmentation and proposed a new algorithm of segmentation. Finally, we certify the new algorithm is better than traditional algorithm...
Simulation for excavation of earth-rock work can be close to reality and reflect the details of work progress and improve the efficient of earth-rock materials, if the thinking of modeling based on multi-agent is drew into simulation system for excavation of earth-rock work. It introduces the theory of agent and multi-agent system at first. Then the modeling of system simulation based on multi-agent...
A joint strategy of stock provision and age-based preventive maintenance is considered. The joint strategy takes the form (T, s, S), where T is scheduled preventive replacement age, s is stock reorder point and S is maximum inventory level. The optimal values of the decision variables are obtained by minimizing the total cost of maintenance and inventory. To accomplish the optimizing task, a general...
Based on analyzing fundamental algorithms principle of back propagation network, in view of the limitations of BP network algorithm, this paper proposed the homologous improved algorithms from two respects: accelerate the learning speed of BP network and advance the convergence degree of network. By means of increasing the discrepancy factors of neuron function, the traditional function is optimized...
Dominance-based rough set approach is an useful extension of the classical rough set approach and it has been successfully applied into multi-criteria decision analysis problems. This paper present an explorative research focusing on knowledge reduction of fuzzy rough set model in fuzzy decision system. The investigated fuzzy rough set model is different from the classical fuzzy rough set model because...
Granular computing (GrC) fuses theoretical research results such as rough sets, fuzzy sets, word computing, quotient space and interval computing. GrC is a new hotspot in artificial intelligence and information processing. Layer viewpoint is a concept in GrC and multi-layer GrC has great significance in the problem solving and knowledge structure of human beings. This paper introduced the layer viewpoint...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.