The difference between Address Probable Correctness scores and Overall Probable Correctness scores in CODE-1 Plus

UPDATED: March 17, 2017

CODE-1 Plus uses a sliding scale of 0 (zero) to 9 with zero being the best case (best possible match) and 9 being the worst case (several changes were made to the address in order to get a match).
This sliding scale is used as an indication of the accuracy of your file.  For the most part, an OVERALL probability correctness of 0-2 would indicate a fairly clean file, whereas an OVERALL probability correctness of 3 or higher would indicate records requiring significant changes.
The 0-9 scale is determined by internal calculations based on many variables (number of changes made to the address, etc.), and then a "percentage" of sorts is derived that is translated to a range on the sliding scale (0-9).  We cannot equate each scale number to a particular address element change (e.g., if CODE-1 Plus changes a pre-directional, then a scale of "x" will be returned; if CODE-1 Plus changes a pre-directional AND a suffix, then a scale of "x" will be returned, etc.).  Instead, this scale should be used simply to determine the initial hygiene of your file.
You can have both the ADDRESS probability and OVERALL probability returned.  The ADDRESS probability takes into account the street address (123 Main St), whereas the OVERALL probability takes into effect the street address PLUS the firm name (if applicable) and number of match attempts.  Therefore, it is likely that the OVERALL  probability will be higher than the ADDRESS probability.  For instance. if the address probability is 0 (perfect match), but the firm name was missing and it is a firm record, then the OVERALL probability of correctness will be higher than the ADDRESS probability of correctness (e.g., 0 vs. 1).

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