Study on the Prediction of Epidemic Cerebrospinal Meningitis by Using Cosine Model

This paper discribed that using consine model predicted epidemic cerebrospinal meningitis case number per month or year was a rational prediction method, the result accuracy was better and had some practical value. In order to make the prediction value>0, if r value≤0.5 could be calculated directly, if r value>.05 the original data was neccesary to transform to Logarithm when the calculation was taken.