Thanks Andreas,
My client possessed a system that Identified connected tanks, one relationship at a time, and a system that keeps track of the tank flow at any given time based off changes in levels.
We used a graph to connect each of those related tanks into communities, and then used the flow information on each of them to do a mass balance of the entire system. That allows us to identify if any particular network is net positive or net negative in terms of liquid. Knowing that information can point them to a specific subset of tanks that may be losing liquid due to an open valve or something like that.
We group everything into Weakly Connected Communities and then pull all of the data back out grouped by those communities. We then look at the net flow in each community, against its tuning weights and biases to identify if we should trigger an alarm that an area is potentially losing volume.
It currently is just realtime, and I haven't implemented anything yet to add historical data, but that will probably come in the future.
