Mineral resources evaluation model research based on BP neural network and TSVM algorithm
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摘要: 在矿产资源评价模型研究中,针对TSVM在未标识样本中必须指定正标识样本数这一问题,本文提出了一种新的改进算法对矿产资源进行评价,即基于BP神经网络优化的直推式支持向量机(BP-TSVM)。通过支持向量机将有标签样本进行识别分类,利用BP神经网络对已分类的边界内的无标签样本进行正负标注,然后作为下一次支持向量机训练时的有标签样本。提出的新算法避免了分类性能下降的问题,使得TSVM对正标签样本NP的估计更准确。同时,由于训练样本数量的保持使得训练时间大大减少。实验结果表明,与传统的SVM算法、TSVM算法和BP神经网络算法相比,本文提出的BP-TSVM算法能更准确地评价矿产资源。Abstract: In the study of mineral resources evaluation model, the problem that the number of positive samples must be specified in the TSVM in the unlabeled samples. Then this article applied the improved algorithm to the evaluation of mineral resources, and the algorithm is TSVM based on BP neural network and BP-TSVM for short. The SVM is applied to studying the discernment and classification of labeling samples. We will annotate the plus or minus of unlabeled data within the boundary of already classified by utilizing BP neural network. The labeling samples as learned by SVM in the next iteration. The new algorithm will avoid decreased classified ability. TSVM can have more accurate estimates of number of plus of labeled data. Also, the number of training samples can reduce training times. The experimental result proves that compared with conventional SVM,TSVM and BP neural network the BP-TSVM is more accurate in evaluation of mineral resources.
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Key words:
- TSVM /
- BP neural network /
- mineral resources /
- evaluation /
- semi supervised
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