The K function is not a model as such; rather, it is a functional summary statistic of the data, which in this context we assume to be a list of disease cases with associated locations and times. The K-function is defined for a spatio-temporal stochastic process as: To be completed

{"references": ["Diggle P.J., Chetwynd A.G., Haggkvist R., Morris S.E. (1995) Second order analysis of space-time clustering. Stat Methods Med Res, 4, 124\u2013136."]}

The model is implemented in R