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A Neural Network for Weighted Least-Squares Criteria of Traveltime Tomography

A Neural Network for Weighted Least-Squares Criteria of Traveltime Tomography
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摘要 TH network has been applied successfully to linear optimum and some quadratic optimum problems.This paper discusses how to determine the gain function of the net amplifiers and choose appropriate parameters to solve weighted least-squares problems.To test the performance of the net,it is used for seismic traveltime tomography in computer simulation. Two media of different contrast are taken in simulation.The experimental results show that if the parameters are determined appropriately, the performance of the network is good and the results are close to the ideal ones. TH network has been applied successfully to linear optimum and some quadratic optimum problems.This paper discusses how to determine the gain function of the net amplifiers and choose appropriate parameters to solve weighted least-squares problems.To test the performance of the net,it is used for seismic traveltime tomography in computer simulation. Two media of different contrast are taken in simulation.The experimental results show that if the parameters are determined appropriately, the performance of the network is good and the results are close to the ideal ones.
出处 《Wuhan University Journal of Natural Sciences》 CAS 1996年第2期208-212,共5页 武汉大学学报(自然科学英文版)
关键词 TH network weighted least-sqaures traveltime tomography TH network,weighted least-sqaures,traveltime tomography
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