LO40997: RESULTS FROM DOMAIN SEARCH AND FTI SHOW INCORRECT RELEVANCE RANK ING WHEN FUZZY SEARCH OPTION IS ENABLED

APAR status

• Closed as user error.

Error description

• When searching using the domain search or full text index, the
  relevance sort
  is incorrect when the Fuzzy search is selected.
  
  Below is a table of the number of occurrences for each
  document:
  
  Document Title           Number of Times 0001        Number of
  Times 000### is in the
                                       is in the Document
  Document (including the title)
  0009 (System Admin)      0
     10
  0008 (System Admin)      0
      4
  0007 (System Admin)      0
      5
  0006 (System Admin)      1
      4
  0005 (System Admin)      2
      3
  0004 (System Admin)      2
      3
  0003 (System Admin)      3
      4
  0001 (System Admin)      2 (including title)
  2
  0002 (System Admin)      0
      2
  
  You will notice from the table that the sort by relevance is
  incorrect since
  the second document (0008 (System Admin)) listed has less
  occurrences of 000###
  than the third document listed (0007 (System Admin)
  

Local fix

• None, can only disable the fuzzy search option to sort by
  relevance
  

Problem summary

Problem conclusion

Temporary fix

Comments

• This APAR is associated with SPR# CCRT7SETFL.
  From development: From all indications, this problem
   description is working as designed  General Comments: The most
   notable documentation provided in GTR for this issue is as
   follows:     The traditional strict Boolean operation has an
   advantage in speed, but   it does not allow to evaluate the
   intermediate status. By using Fuzzy   operation, the
   intermediate status, such as "The document contains not all
   search terms but almost all" is evaluated, therefore the
   result is natural   to the way of human thinking. Fuzzy
   operation can be used in Ranking Search   only.
  

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

Applicable component levels