IBM Datacap, Version 8.1

Checking the confidence levels on the runtime pages

During page identification, Taskmaster assigns a confidence level to each page. This process indicates the degree of similarity between the runtime page and the fingerprint that matches the page most closely.

You can see the confidence level for each page in the runtime batch file (PageID.xml) that is generated by the PageID task profile.

To check the confidence levels on the runtime pages:

Open the application's most recent batch folder (C:\Datacap\TravelDocs\batches\<batch_identifier>).

Open the file PageID.xml in an XML viewer or in Notepad. This file includes the confidence level that is assigned to each page in the batch, and the identifier of the matching fingerprint.

<?xml-stylesheet type="text/xsl" href="..\..\dco.xsl"?>
<B id="20100321.002">
       <V n="TYPE">TravelDocs</V>
       <V n="LAST_RR_TPROFILE">PageID:m:eRun</V>
       <P id="TM000001">
              <V n="TYPE">Rental_Agreement</V>
              <V n="STATUS">49</V>
              <V n="IMAGEFILE">tm000001.tif</V>
              <V n="ScanSrcPath">c:\datacap\traveldocs\images\images_page_01.tif</V>
              <V n="RecogStatus">0</V>
              <V n="Confidence">0.9727517</V>    <-- Confidence level
              <V n="Image_Offset">0,0</V>
              <V n="TemplateID">556</V>          <-- identifier of matching fingerprint
              <V n="Fingerprint Created">No</V>
       </P>
       ...

The default application framework uses a confidence threshold of 0.7, so anything above 0.7 is considered a match. In the example above, the confidence level is 0.97, so the page is a good match. If multiple fingerprints match with a confidence level above 0.7, Taskmaster selects the fingerprint with the highest confidence value.

Important: The SetProblemValue action in the PageID: Set Fingerprint Params rule specifies the minimum required confidence level.

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