为了解决目前代码混淆评估方法对代码混淆效果区分度不高的问题,文中提出一种基于非线性模糊矩阵的代码混淆有效性评估模型MNLFM(Code Obfuscation Effective Assessment Model Based on Nonlinear Fuzzy Matrices),并证明了MNLFM具有...为了解决目前代码混淆评估方法对代码混淆效果区分度不高的问题,文中提出一种基于非线性模糊矩阵的代码混淆有效性评估模型MNLFM(Code Obfuscation Effective Assessment Model Based on Nonlinear Fuzzy Matrices),并证明了MNLFM具有评估合理性、单调递增性、连续性和突出性等特性。MNLFM可以明显改善当前代码混淆评估领域在混淆效果方面可区分性差的现状。通过量化评估指标、确定隶属函数和构造非线性模糊矩阵等方法进行建模。建立一个Java程序测试用例集,基于压扁控制流和多种不透明谓词代码混淆技术对此模型进行混淆有效性检验,并将其与其他代码混淆评估模型进行比较。实验结果验证了MNLFM可以比较混淆后代码之间的综合复杂度,并明确区分不同混淆算法对原代码的混淆程度。展开更多
Rockburst is a common geological disaster in underground engineering,which seriously threatens the safety of personnel,equipment and property.Utilizing machine learning models to evaluate risk of rockburst is graduall...Rockburst is a common geological disaster in underground engineering,which seriously threatens the safety of personnel,equipment and property.Utilizing machine learning models to evaluate risk of rockburst is gradually becoming a trend.In this study,the integrated algorithms under Gradient Boosting Decision Tree(GBDT)framework were used to evaluate and classify rockburst intensity.First,a total of 301 rock burst data samples were obtained from a case database,and the data were preprocessed using synthetic minority over-sampling technique(SMOTE).Then,the rockburst evaluation models including GBDT,eXtreme Gradient Boosting(XGBoost),Light Gradient Boosting Machine(LightGBM),and Categorical Features Gradient Boosting(CatBoost)were established,and the optimal hyperparameters of the models were obtained through random search grid and five-fold cross-validation.Afterwards,use the optimal hyperparameter configuration to fit the evaluation models,and analyze these models using test set.In order to evaluate the performance,metrics including accuracy,precision,recall,and F1-score were selected to analyze and compare with other machine learning models.Finally,the trained models were used to conduct rock burst risk assessment on rock samples from a mine in Shanxi Province,China,and providing theoretical guidance for the mine's safe production work.The models under the GBDT framework perform well in the evaluation of rockburst levels,and the proposed methods can provide a reliable reference for rockburst risk level analysis and safety management.展开更多
文摘为了解决目前代码混淆评估方法对代码混淆效果区分度不高的问题,文中提出一种基于非线性模糊矩阵的代码混淆有效性评估模型MNLFM(Code Obfuscation Effective Assessment Model Based on Nonlinear Fuzzy Matrices),并证明了MNLFM具有评估合理性、单调递增性、连续性和突出性等特性。MNLFM可以明显改善当前代码混淆评估领域在混淆效果方面可区分性差的现状。通过量化评估指标、确定隶属函数和构造非线性模糊矩阵等方法进行建模。建立一个Java程序测试用例集,基于压扁控制流和多种不透明谓词代码混淆技术对此模型进行混淆有效性检验,并将其与其他代码混淆评估模型进行比较。实验结果验证了MNLFM可以比较混淆后代码之间的综合复杂度,并明确区分不同混淆算法对原代码的混淆程度。
基金Project(52161135301)supported by the International Cooperation and Exchange of the National Natural Science Foundation of ChinaProject(202306370296)supported by China Scholarship Council。
文摘Rockburst is a common geological disaster in underground engineering,which seriously threatens the safety of personnel,equipment and property.Utilizing machine learning models to evaluate risk of rockburst is gradually becoming a trend.In this study,the integrated algorithms under Gradient Boosting Decision Tree(GBDT)framework were used to evaluate and classify rockburst intensity.First,a total of 301 rock burst data samples were obtained from a case database,and the data were preprocessed using synthetic minority over-sampling technique(SMOTE).Then,the rockburst evaluation models including GBDT,eXtreme Gradient Boosting(XGBoost),Light Gradient Boosting Machine(LightGBM),and Categorical Features Gradient Boosting(CatBoost)were established,and the optimal hyperparameters of the models were obtained through random search grid and five-fold cross-validation.Afterwards,use the optimal hyperparameter configuration to fit the evaluation models,and analyze these models using test set.In order to evaluate the performance,metrics including accuracy,precision,recall,and F1-score were selected to analyze and compare with other machine learning models.Finally,the trained models were used to conduct rock burst risk assessment on rock samples from a mine in Shanxi Province,China,and providing theoretical guidance for the mine's safe production work.The models under the GBDT framework perform well in the evaluation of rockburst levels,and the proposed methods can provide a reliable reference for rockburst risk level analysis and safety management.
