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This paper describes two approaches based on evolutionary algorithms for determining Bayesian networks structures from a database of cases. One major difficulty when tackling the problem of structure learning with evolutionary strategies is to avoid the premature convergence of the population to a local optimum. In this paper, we propose two methods in order to overcome this obstacle. The first method...
The logistic distribution has the characteristic of dispersive customer positions, little batches and many repeated routes under common distribution. Therefore, according to the particularity of logistic distribution, the improved cluster first/route second algorithm is adopted to get solutions. Namely, the customer group can be divided into several regions using k-means algorithm in first phase....
As a fundamental operator in genetic algorithms (GAs), crossover may not only make an existing schema survived, but also construct a new one from other existing schemata. Unfortunately, the traditional schema theorem (Holland 1975) does not take into account the positive effects of a schema construction through crossover operation. Thus, they can not well characterize the evolution of a schema. In...
This paper investigates the representation of program for program reuse. A new gene structure is proposed: head + body + tail, which allows the program with necessary complexity and putting some learning mechanism into the search process. A new homeotic gene structure is proposed, it not only can call for subroutines easily, but also can automatically perform programming. The concept of different...
Our purpose is to explore an application of level set evolution theory to seek the solution of objects (as bridge or dam) segmentation above river from radar imagery with unwelcome effects. We present a novel level set evolution formulation for improving accuracy of segmentation. Critically, a logic fusion term is constructed using logic operators defining in multi-source satellite imagery with high...
Old films or photographs usually have damages from physical or chemical effects, and the damage make stain, scratch scribbling, noise, and digital drop out in frames. Inpainting is a well-known technique to restore damages in images. Bertalmio's inpainting scheme shows good reconstruction, but it requires much time complexity. We present a modified inpainting scheme, where we use Sobel edge operator's...
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