| 动态模式匹配算法在地层对比中的应用 |
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| 引用本文： | 吴志芳,何桥.动态模式匹配算法在地层对比中的应用[J].世界地质,2003,22(2):181-184. |
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| 作者姓名： | 吴志芳 何桥 |
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| 作者单位： | 吉林大学计算机科学与技术学院,长春,130026 |
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| 摘 要： | 动态序列匹配算法已经被广泛地用于模式识别过程中。采用特殊的编码方法来模仿人眼的工作原理，对待识别信号与标准模式信号进行计算机自动匹配。从而达到识别未知信号的目的。针对利用测井曲线的地层对比，本文在动态匹配算法的基础上，为提高对比的可靠性，研究了以相似度S为主体，加上曲线的均值Y、曲线的方差σ、地层厚度△H以及作为改进参数—岩性特征值为辅助参数的匹配距离计算方法。按照最小匹配费用原则从匹配代价矩阵中确定了地层匹配路径。实际资料处理表明，该方法不仅能够较好找出匹配地层，还可有效判断地层尖灭现象。
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| 关 键 词： | 动态规划 模式匹配 地层对比 |
| 文章编号： | 1004-5589(2003)02-0181-04 |
Application of the Dynamic Pattern Match Algorithm to Stratigraphic Correlation |
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| Zhifang Wu,Qiao He College of Computer Science and Technology,Jilin University,Changchun, China.Application of the Dynamic Pattern Match Algorithm to Stratigraphic Correlation[J].World Geology,2003,22(2):181-184. |
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| Authors: | Zhifang Wu Qiao He College of Computer Science and Technology Jilin University Changchun China |
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| Institution: | Zhifang Wu,Qiao He College of Computer Science and Technology,Jilin University,Changchun,130026 China |
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| Abstract: | The algorithm of dynamic sequence matching has been widely applied to pattern recognition. Making use of special coding the principle of human eye's signal processing is simulated and the unknown signal is recognized through matching with standard ones. For using geophysical well logs in stratigraphic correlation and improving reliability of the correlation, the authors studied the compution method of matching distance, taking the similarity S as the main body and the mean values of log curves, log variance, stratum interval and the improved parameters--the characterized lithological values--as the auxiliary parameters, on the basis of dynamic matching algorithm. According to the theory of least match cost, the match path was extracted. The result illustrated that the enhanced method not only can find the matched strata, but also can identify wedge--out of the strata. |
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| Keywords: | dynamic programming pattern matching stratigraphic correlation |
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