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)
| matrix | A transactions-flow or balance sheet matrix |
|---|---|
| baseline | A baseline model. |
| which | Either "bs" (balance-sheet matrix) or "tfm" (transactions-flow matrix). |
| tol | A numerical value indicating the absolute accepted discrepancy accepted to validate whether the rows and columns are equal to their expected values. |
| rtol | A logical value indicating whether relative discrepancies should be
evaluated. It defaults to |
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.
João Macalós