Interventions in a Specific Region

We now have the capability needed to implement interventions at a regional level, but so far no interventions are taking place. Let's say we want to start a mass-vaccination program when the total number of daily cases showing up in Malaysia goes above a threshold, say 100. First, we need to create a new predicate of the type 'Label Value Test'. Use the toolbar in STEM to create a new predicate, give it a name (e.g. "TotalIncidenceTest'). Next, right click on the new predicate, select "New Child", then "LabelValue Test". Select the new "Label Value Test" item in the editor and then open the property sheet. For the Model Name, enter the name of your disease (in this case 'Flu'). Observe this is the disease name attribute specified in your disease model, not the name of the disease file. Keep the Population Identifier as 'human', Predicate '>' (can be >, <, >=, <= or =), State 'incidence' (this is the value we want to test), Target URI 'stem://org.eclipse.stem/node/geo/region/MYS' (the URI of the target node, in this case Malaysia. You can find the URI from the Identifier Dublin Core attribute of the node in the graph containing the level 0 node of Malaysia. Keep the threshold at 100.

Tutorial Screenshot

Screenshot of the Predivcate Options on my Desktop