Method for classifying abnormal chemical single elements containing constraint SVM

Abstract

The invention provides a method for classifying abnormal chemical single elements containing constraint SVM. The method comprises the steps that sampling data in a range to be classified is preprocessed to obtain a training data set; constraint conditions are added into the training data set to obtain the training data set containing the constraint conditions; normalization processing is conductedon the training data set containing the constraint conditions, and the normalized training data set containing the constraint conditions is used for training an SVM classifier; an optimal kernel function of the SVM classifier is obtained to obtain an optimal SVM classifier; the optimal SVM classifier is used for conducting linear classification on the training data set; a complete geochemical single element abnormity map is generated according to linear classification results. The geochemical single element abnormity meeting geological condition constraints is effectively determined, and thedistribution and tendency problems of single element abnormity are effectively solved.

Description

technical field [0001] The invention relates to the field of geochemical prospecting thematic mapping, in particular to a method for classifying anomalous chemical single elements with constrained SVM. Background technique [0002] The single-element geochemical anomaly map shows the chemical anomaly characteristics and scope of a single element (indicator), which is an important achievement map in geochemical exploration, scientific research and production, and is also the basic map for obtaining a comprehensive anomaly map for anomaly classification and evaluation. At present, computer-aided mapping of single-element anomalies is generally carried out by tracking contour maps based on regular grids or irregular triangulations. The generated anomaly maps are completely dependent on the sampling data and are greatly affected by the uniformity of sampling. [0003] According to ore deposit theory and expert experience, the shape of anomalies should correspond to geological fe...

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Problems solved by technology

[0004] Existing methods based on grid-based contour tracing to delineate single-element anomalies seldom consider the constraints of geological conditions. In practical applications, geochemical prospectors often consider geological Conditions, but it is greatly affected by human beings. It is necessary to explore a method that uses intelligence to delineate single-element anomalies based on expert experience, and then quickly delineate combined anomalies.

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