硬盘故障给数据中心的可靠性和可用性带来的影响越来越大,采用不同的机器学习方法构建基于自监控分析报告技术(self-monitoring,analysis and reporting technology,SMART)属性的硬盘故障预测模型策略的研究已经取得了一定的效果.但这...硬盘故障给数据中心的可靠性和可用性带来的影响越来越大,采用不同的机器学习方法构建基于自监控分析报告技术(self-monitoring,analysis and reporting technology,SMART)属性的硬盘故障预测模型策略的研究已经取得了一定的效果.但这些模型策略无法得到较为稳定的预测效果,并且无法选择适合于不同用户需求的最佳模型.为得到更高的准确率和较低的误报率,实现了基于Adaboost算法的BP神经网络预测模型优化方法.在此基础上,为更好地适用于实际工作场景,实现了根据遗传算法(genetic algorithm,GA),按照用户的预测效果要求,选择出最恰当的预测模型的方法,在不同的效果要求下选用不同的预测模型.展开更多
Through the research into college students＇ English autonomous learning ability of the non-English major students. That the cause why university students＇ English autonomous learning ability is weak is proved to be ...Through the research into college students＇ English autonomous learning ability of the non-English major students. That the cause why university students＇ English autonomous learning ability is weak is proved to be that they do not value the use of learning strategies. The use of learning strategies can promote the formation and enhancement of autonomous learning ability of the learners. Metacognitive strategy is a high-level management skill which can enable the learners to plan, regulate, monitor and evaluate actively their own learning process. Massive researches have proved whether metacognitive strategy is used successfully or not can directly affect the student learning result. So, it is necessary for teachers to cultivate and train the students to use metacogitive strategy in the university English teaching.展开更多
文摘硬盘故障给数据中心的可靠性和可用性带来的影响越来越大,采用不同的机器学习方法构建基于自监控分析报告技术(self-monitoring,analysis and reporting technology,SMART)属性的硬盘故障预测模型策略的研究已经取得了一定的效果.但这些模型策略无法得到较为稳定的预测效果,并且无法选择适合于不同用户需求的最佳模型.为得到更高的准确率和较低的误报率,实现了基于Adaboost算法的BP神经网络预测模型优化方法.在此基础上,为更好地适用于实际工作场景,实现了根据遗传算法(genetic algorithm,GA),按照用户的预测效果要求,选择出最恰当的预测模型的方法,在不同的效果要求下选用不同的预测模型.
文摘Through the research into college students＇ English autonomous learning ability of the non-English major students. That the cause why university students＇ English autonomous learning ability is weak is proved to be that they do not value the use of learning strategies. The use of learning strategies can promote the formation and enhancement of autonomous learning ability of the learners. Metacognitive strategy is a high-level management skill which can enable the learners to plan, regulate, monitor and evaluate actively their own learning process. Massive researches have proved whether metacognitive strategy is used successfully or not can directly affect the student learning result. So, it is necessary for teachers to cultivate and train the students to use metacogitive strategy in the university English teaching.
