马尔可夫模型在疑似预防接种异常反应报告趋势预测中的应用及R语言实现
发布时间:2018-04-11 07:35
本文选题:疑似预防接种异常反应 + 马尔可夫模型 ; 参考:《中国疫苗和免疫》2017年04期
【摘要】:目的应用马尔科夫模型对甘肃省2016年11月和12月疑似预防接种异常反应(Adverse events following immunization,AEFI)报告数进行预测。方法选取2015年1月-2016年10月甘肃省分月AEFI报告数,通过10折交叉验证将其划分为6个状态,通过时间与状态的转移概率矩阵预测2016年11月和12月AEFI报告数。结果通过转移概率矩阵得到甘肃省2016年11月和12月转移概率分别为(0.33,0.33,0.33,0.00,0.00)和(0.00,0.33,0.19,0.19,0.19,0.08),11月和12月预测数分别为663例和717例,预测误差分别为14.67%和-38.68%。结论马尔科夫模型进行AEFI报告趋势预测是可行的,需要收集较长的时间序列数据以提高预测精度。
[Abstract]:Objective to predict the number of events events following AEFI reports in Gansu Province in November and December 2016 by using Markov model.Methods monthly AEFI reports were selected from January 2015 to October 2016 in Gansu Province, and were divided into 6 states by 10% cross-validation. The number of AEFI reports in November and December 2016 was predicted by the transition probability matrix of time and state.Conclusion it is feasible for Markov model to predict the trend of AEFI report, and it is necessary to collect long time series data to improve the prediction accuracy.
【作者单位】: 甘肃省疾病预防控制中心;
【分类号】:O211.62;R186
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本文编号:1735027
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