Methods and systems for data modelling. One method includes receiving a data stream including a first plurality of data points, aggregating the first plurality of data points to a second plurality of data points including values at a first frequency, and building, with at least one electronic processor, a first model based on the second plurality of data points, wherein the first model is configured to generate data values at the first frequency. The method also includes accessing a second model based on a third plurality of data points, wherein the second model is configured to generate data values at a second frequency shorter than the first frequency, generating a first data output using the first model, generating a second data output using the second model, multiplying the first data output by the second data output to generate a third data output, and outputting the third data output for display.