This function validates a transactions-flow or balance-sheet
matrix with the simulated data obtained with sfcr_baseline()
function
sfcr_validate(matrix, baseline, which, tol = 1, rtol = FALSE)A transactions-flow or balance sheet matrix
A baseline model.
Either "bs" (balance-sheet matrix) or "tfm" (transactions-flow matrix).
A numerical value indicating the absolute accepted discrepancy accepted to validate whether the rows and columns are equal to their expected values.
A logical value indicating whether relative discrepancies should be
evaluated. It defaults to FALSE. Stationary models should pass the test using
a absolute level while growth models might need a relative validation since computational
discrepancies tend to get larger with the model. See details for further information.
João Macalós
The relative discrepancy is calculated differently if we are dealing with a
transactions-flow matrix or with a balance-sheet matrix. If which is set to tfm,
the sum of the row/column is evaluated against the sum of the positive entries of that row/column.
For example, in a transactions-flow matrix with three entries in the "change in the stock of bills" row (-Delta (Bhd), + Delta (Bs), and + Delta (Bbd)), the discrepancy d = Delta Bs - Delta Bhd - Delta Bbd is evaluated against Delta Bs, i.e., the row is validated if d/Delta Bs < tol.
In a balance-sheet matrix, all the rows/columns that sum to zero are validated exactly as in a transactions-flow matrix. The exception to this rule is when there is a expected value. In this case, the discrepancy is evaluated as a proportion of the expected. value
To prevent unnecessary calculations, a absolute check with tolerance defined as 1e-3 is executed prior to this evaluation.
The absolute discrepancy set with tol should be enough to validate
a stationary SFC Model.