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Table 9 Notation Table II

From: A framework for evaluating epidemic forecasts

Symbol Definition
X Random variable X (or X t ) that is the predicted estimate of a data point at one week(t th week)
f(x)|f x Probability density function (pdf) of random variable X
μ x Mean value for the random variable X
\(\sigma _{x} = \sigma /{\sqrt {N_{x}}}\) Standard deviation for the random variable X
\(\overline {x}\) Mean value of the samples belonging to random variable X
σ Standard deviation of the samples belonging to random variable X
v v=N x −1 Degree of freedom of t-distribution
\( \bar {y} \) \(\bar {y}=\frac {1}{n} \sum _{t=1}^{n} (y_{t}) \) : the mean for y values over n weeks
S x ={s i } where s i is the sample from distribution f x
\(N_{s_{x}} = |S_{x}| \) Number of sample set S x
Y Random variable Y (or Y t ) that is the estimate of observed value at one week(t th week)
g(y)|g y Probability density function (pdf) of random variable Y
S y ={s j } where s j is the sample from distribution g x