基于四大集成学习的岩爆烈度分级预测

doi:10.13722/j.cnki.jrme.2022.0026

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Abstract In order to accurately predict rockburst disasters，the four integrated learning of Boosting，Bagging，Stacking，and Voting are applied to rockburst disaster prediction. The prediction performance of common machine learning algorithms，Boosting and Bagging is compared. The base model selection method of Stacking and Voting is proposed. First，275 groups of rockburst cases at home and abroad were collected to construct the original rockburst data set，statistical parameters of different rockburst grades in the original rockburst dataset were analyzed. TSNE(t-distributed Stochastic Neighbor Embedding) algorithm is used to visualization analysis the original rockburst data. The analysis shows that there are a large number of outliers in the original rockburst data set and the data is unbalanced. Secondly，Yeo-Johnson transformation and K-means SMOTE oversampling are used successively to normalize and balance the data to reduce the effects of outliers and data imbalance，respectively. The normalized and balanced rockburst data has enhanced separability. Then，Training prediction is made for 15 machine learning algorithms including general machine learning，Boosting and Bagging. The accuracy of macro average and Friedman statistical hypothesis test were used to compare the prediction performance of various models. Finally，a prediction method of rockburst intensity grading based on Stacking and Voting is proposed. The models with low accuracy or high similarity of prediction results were eliminated by using the exhaustive method. General machine learning，Boosting and Bagging algorithms retain the models with high precision and as different as possible as the base models for Stacking or Voting. The results show that the prediction performance of Boosting，Bagging，Stacking and Voting is mostly better than that of ordinary machine learning. The Stacking and Voting rockburst intensity classification prediction methods combining diversity and accuracy weights can effectively improve the rockburst prediction performance.

Key words： rock mechanics ensemble learning TSNE dimensionality reduction visualization data normalization and balance diversity and accuracy weights combined rockburst intensity classification prediction

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	Articles by authors
	TAN Wenkan1
	2
	HU Nanyan1
	2
	YE Yicheng1
	2
	WU Menglong1
	2
	HUANG Zhaoyun3
	WANG Xianhua4

Cite this article:

TAN Wenkan1,2,HU Nanyan1, et al. Rockburst intensity classification prediction based on four ensemble learning[J]. , 2022, 41(S2): 3250-3259.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2022.0026 OR https://rockmech.whrsm.ac.cn/EN/Y2022/V41/IS2/3250

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