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一种基于ExtraTrees的差分隐私保护算法 被引量:6
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作者 李杨 陈子彬 谢光强 《计算机工程》 CAS CSCD 北大核心 2020年第2期134-140,共7页
为在同等隐私保护级别下提高模型的预测准确率并降低误差,提出一种基于ExtraTrees的差分隐私保护算法DiffPETs。在决策树生成过程中,根据不同的准则计算出各特征的结果值,利用指数机制选择得分最高的特征,通过拉普拉斯机制在叶子节点上... 为在同等隐私保护级别下提高模型的预测准确率并降低误差,提出一种基于ExtraTrees的差分隐私保护算法DiffPETs。在决策树生成过程中,根据不同的准则计算出各特征的结果值,利用指数机制选择得分最高的特征,通过拉普拉斯机制在叶子节点上进行加噪,使算法能够提供ε-差分隐私保护。将DiffPETs算法应用于决策树分类和回归分析中,对于分类树,选择基尼指数作为指数机制的可用性函数并给出基尼指数的敏感度,在回归树上,将方差作为指数机制的可用性函数并给出方差的敏感度。实验结果表明,与决策树差分隐私分类和回归算法相比,DiffPETs算法能有效降低预测误差。 展开更多
关键词 差分隐私 extratrees算法 分类 回归分析 决策树
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Detection of Epilepsy Cases in Newborns
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作者 Gérard Behou N’Guessan Kouassi Saha Bernard +1 位作者 Coulibaly Tiékoura Diarra Bassira 《Engineering(科研)》 CAS 2023年第2期134-142,共9页
Epilepsy is a very common worldwide neurological disorder that can affect a person’s quality of life at any age. People with epilepsy typically have recurrent seizures that can lead to injury or in some cases even de... Epilepsy is a very common worldwide neurological disorder that can affect a person’s quality of life at any age. People with epilepsy typically have recurrent seizures that can lead to injury or in some cases even death. Curing epilepsy requires risky surgery. If not, the patient may be subjected to a long drug treatment associated with lifestyle advice without guarantee of total recovery. However, regardless of the type of treatment performed, late treatment necessarily creates psychological instability in the patient. It is therefore important to be able to diagnose the disease as early as possible if we desire that the patient does not suffer from its consequences on their mental health. That is why the study aims to propose a model for detecting epilepsy in order to be able to identify it as early as possible, especially in newborns. The objective of the article is to propose a model for detecting epilepsy using data from electroencephalogram signals from 10 newborns. This model developed using the extra trees classifier technique offers the possibility of predicting epilepsy in infants with an accuracy of around 99.4%. 展开更多
关键词 Neonatal Epilepsy Electroencephalogram Signal Supervised Classification Random Forest extratrees Gradient Boosting Tree
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