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Direction parameter thetas is one of the important parameters of GLCM (gray level co-occurrence matrix). A fixed angle (such as thetas=45deg) or the average of the measurements in four direction (thetas=0deg,45deg,90deg,135deg) were usually used in calculating GLCM. However, these methods are just empiristic idea, lacking of theoretical support. In fact, the above-mentioned idea are usually failed...
In this paper, a simple and efficient method for coarse classification of Chinese characters is presented. In the new approach, a Chinese character is characterized with its outmost and second-peripheral segment features, each of which is expressed as four string vectors. The outmost and second-peripheral segment features of a Chinese word describe the structure of segments in top, bottom, left and...
The adjacent matrix is defined in this paper for a given graph, and the deformation called dual congruent act on the matrix is discussed. We have shown that any two graphs are isomorphic each other if and only if they having the dual congruent adjacent matrices. So the adjacent matrix of graph is a isomorphic invariants for graph theory. Some properties about adjacent matrix are obtained in the paper...
Fuzzy logic controllers (FLCs) are developed to exploit human expert knowledge in designing control systems. While the fuzzy rules are relatively easy to obtain, fuzzy membership function (MF) tuning could be a time consuming exercise. In this paper the particle swarm optimization technique is employed to automatically tune the MFs of a Mamdani-type of fuzzy controller. The effectiveness of the proposed...
Privacy preservation is an important issue in the release of data for mining purposes. In practical applications, data is published continuously as new data arrive. Recently, efficient anonymization for continuous data publishing has attracted much research work. However, a careful balance between privacy and utility for continuous data publishing remains an open problem. In this paper, we study the...
The paper develops a new kind of intelligent PID controller that distinguishes the conventional PID. It makes BP network act on the elastic-integral PID controller, which can adjust its parameters on-line. As the identification controller, RBF neural network identifies the sensitivity of the output to the input, improves the accuracy of the system. The intelligent PID controller realizes the combination...
Heterogeneous wireless sensor networks are more similar to the reality. An improved scheme of SEP(stable election protocol) is proposed in this paper. Similarly, the node with more energy will have more probability in the phase of electing cluster head firstly. Then, virtual cluster head is designed after cluster formation phase based on SEP. During the data transmission phase, virtual cluster head...
Flexible job shop scheduling problem (FJSP) is a research hotspot of job shop scheduling problems (JSPs). JSP has been proved to be NP-hard, yet the computational complexity of FJSP is much higher, which disables exact solution methods and makes heuristic approaches more qualified. In this paper, a kind of FJSP is analyzed and formulated, which considers storing and maintaining costs of operations...
Rough equality is an important area of rough set theory. The connotation is analyzed in this paper. According to basic concepts of rough set theory, it is proved that different rough sets have the same upper and lower approximations, and the sufficient and necessary condition of rough equality sets is proposed. The properties of rough equality are discussed. This paper focus on that rough equality...
The development of digital technology, especially the technology of computer graphics and imaging, has create a new context for the design practice, where the original craftsman-like manner of designing has been made relatively "obsolete", and the trend of de-materialized and intangible design is becoming a reality. This paper attempts to investigate how, in the digital context, design is...
The transportation volume of hazardous material is increasing, and the potential risk of hazardous material for environment and mankind is enlarging. How to select the best transportation route, insure transportation safety and reach destination rapidly is an important problem for decision department. The transportation route decision-making method of hazardous material is put forward in this paper...
In this paper, we develop the path planning algorithm using the improved Dijkstra algorithm and the particle swarm optimization. To get the optimal path, at first we construct the MAKLINK on the world environment and then make a graph associated with the MAKLINK. From the graph, we obtain the Dijkstra path between the starting point and the destination point. From the optimal path, we search the improved...
This paper has presented a method of carry forecast between groups to improve the speed of the large numbers adder in some cryptography and other applications. Firstly, the large numbers is divided into many groups, in which the delay of carry-chain is reduced by carry look-ahead; second, the group addition operation is finished by carry forecast between groups; lastly, the addition sum of different...
The game model of prisonerpsilas dilemma is applied to describe the survival game of altruistic behaviors and selfish behaviors. The game model is extended to an evolutionary game. The learning strategies of altruistic and selfish agents, and their survival, update and movement rules are described in detail. Simulation results show that altruists can outperform selfish agents under certain conditions...
The neural network model presents a new procedure and structure in nonlinear interpolation and demonstrates a potential of stock market prediction with incomplete, imprecise and noisy data. However, a random selection of model parameters might cause the ??over-fitting?? or ??under-fitting?? problem in generalization or prediction. This paper presents a sensitivity analysis of optimal hidden layers...
Passive target tracking is in essence the problem of nonlinear filtering, where the system dynamics equations are usually linear while the measurement equations are nonlinear, and the aim is to obtain the target's state based on the nonlinear measurements. Particle filter is an effective nonlinear filtering algorithm in nonlinear and non-Gaussian state space. According to the characteristics of underwater...
The simulation of deformable soft objects is a key challenge in virtual reality. This paper presents a novel parallel rhombus-chain-connected haptic deformation model based on physics. Because the rhombus in every chain structure unit are proportional in length, calculation cost is less and deformation modeling is easier for different soft objects in this model by only changing the length and angle...
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