Kofax Getting Started with Ascent Xtrata Pro - Manual (Page 144)

Extraction
Ascent Xtrata Pro User's Guide 125
Some locators, such as the Database Locator, provide more than one data item. For
every field of a record present in a database, a corresponding subfield is available for
the locator and can be assigned to an index field.
Figure 4-13. Assigning a Locator to Extract Structured Data
The above screen shot shows the selection of a subfield from a locator that extracts
structured data. Instead of just the locator’s name, you find a list of
[LocatorName].[SubField] entries. You can define a standard field for each subfield
you want to extract.
Alternatives
A locator algorithm usually does not return only one relevant item that can be
assigned to a field. Instead, it creates a set of alternatives for the desired field value.
The alternatives are weighed according to their confidence level. In the evaluation
step, the locator compares the alternatives based on the additional settings you
provide in the locator properties. Based on that evaluation, each alternative is
assigned a confidence value between 100% and 0%.
Example 1:
A date format is defined for a Format Locator that extracts dates as 01/02/04 with
two digits for the year. On the document, the dates “11/08/2004” and “12/07/04”
are present. The format will match both dates. However, only the second one will
have a confidence of 100% because it matches perfectly, whereas the first one will