Summary / Learning objective– Learn about the two types of sensitivity analysis.– Learn how to create sensitivity processes. There are two types of sensitivity analysis available in Cirrus; DSA (Deterministic sensitivity analysis) & PSA (Probabilistic sensitivity analysis). DSA is the more ‘traditional’ way of doing sensitivity analysis where one variable is changed at a time […]
Tornado diagrams are a special type sensitivity analysis graph, where the simulated variables are ordered from top to bottom according to the isolated impact that a given input variable has over the output variables. The bigger the bar, the bigger is the variance compared with the base case scenario represented as a vertical line.
Spider graphs are very useful for sensitivity analysis when evaluating and comparing the isolated percentage increments of independent variables over output variables. Those percent increments are always referred to the baseline input values placed at the 0% increment point. Lines with more accentuated slopes represent the input variables with higher variability over the output variables.
The sensitivity matrix illustrates a qualitative measure of risk in the two-dimension space. The sensitivity matrix shows the output variable calculation resulted by the combined values of any two chosen input variables, as defined at the sensitivity model. The matrix is coloured from green to red, to represent areas where the range of input values […]
Cumulative distribution (CDF) is a function that provides the probability that a random variable is less than or equal to a given limit value. When an output variable is plotted in a CDF, we can promptly read at the vertical axis the corresponding probability of such variable being below a given value. Conversely, we can […]
International guidelines establish standards for all written disclosure made by an issuer concerning mineral projects that are reasonably likely to be made available to the public. Resource Report Technical reports of mineral resources must identify one or more categories of inferred, indicated and measured resources. Resources categories must not be reported in combined form unless […]
A sensitivity analysis determines how different values of an input variable impact a particular output variable under a given set of assumptions. The sensitivity analysis isolates the input variables and then records the range of possible output variable outcomes. DSA stands for the innovative Deterministic Sensitivity Analysis solution in Cirrus. Differently of other desktop mining […]