Preprocessing

The preprocessing stage includes preparatory steps leading up to the matrix Estimation to produce a transition matrix (or matrix set).

The precise steps required depend on the sources of data, the nature of data, use specific requirements (best practices, regulation etc) and, not least, the desired estimation method.

• Input Data Formats
  • Long Data Format
  • Compact Form of Long Format
  • Wide Data Format
  • Other Formats
• State Spaces
  • Example: Map credit ratings between systems
• Cohorts
  • Cohorting Utilities
  • Intermediate Cohort Data Formats
  • Cohorting Examples