I have three data sets from same source. I know they are interdependent and stochastic also. The datasets are of very high frequency (see the graph, X axis is time and Y axis is value). I want to represent these three signals in a single mathematical function. Is it possible?
In the above graph, please see there is a pattern or seasonality. If we change one then other also changes. I have tried to google for it but did not find any model that can completely represent this type of data in a single expression.