:class:`SIR_FixedRecovery`: SIR with a fixed recovery interval ============================================================== .. currentmodule:: epydemic .. autoclass:: SIR_FixedRecovery Models of this kind have slightly more predictable behaviour (since they use a fixed rather than randomly-distributed recovery time), and so can be useful for some kinds of analysis. For example, :ref:`Newman ` uses fixed-time recovery for his seminal analysis of epidemic spreading processes. Additional parameters and node attributes ----------------------------------------- Instead of taking a recovery probability (as defined by :attr:`SIR.P_REMOVE`), :class:`SIR_FixedRecovery` accepts a fixed time interval over which an infected node will remain infected before being removed. .. autoattribute:: SIR_FixedRecovery.T_INFECTED We also record the infection time of a node explicitly: .. autoattribute:: SIR_FixedRecovery.INFECTION_TIME Building the model ------------------ .. automethod:: SIR_FixedRecovery.build Setup and events ---------------- In setting up the model, we need an additional step to make sure that any nodes initially infected are set to be removed at the appropriate simulation time. .. automethod:: SIR_FixedRecovery.setUp Only a single event method is needed, with :meth:`SIR.remove` being inherited. .. automethod:: SIR_FixedRecovery.infect