Dedupe 2.7

Dedupe 2.7: Group 1 - 245 $a, $b - Title (Verify)

Description

This field contains the title of the book, including main title, subtitle, statement(s) of responsibility, and occasionally other information appearing on the title page.

Every record must have a 245 tag.

Subfields a and b will be used for this parameter. If only subfield a is wanted to be used, or if other subfields are to be added other than subfields $n, $p and $h, please use section 2-13 of the dedupe profile to add this information.

Verify Method

There are a few methods for verifying: FULL, PARTIAL, and WITHIN. These methods will be used for comparing data found in a specific field against the same field in a potential match record.

Full

Full compares the entire verify string up to the verify length.

Partial

Partial truncates the compare strings to the shortest string, then does a full compare:

 
 Record A:
   The fox and the hound.
 
 Record B:
   The fox.
 
 Both are truncated to The fox and compared.

Within

Within searches each compare string truncated at verify length against the full un-truncated string of the other field:

 
 Record A:
   Cat.
 
 Record B:
   The cat in the hat.
 
 Cat in Record A will verify against The cat in the hat in Record B.

Normalization

Normalization refers to how the string will be presented when compared to another string. Note that any normalization will not change anything in the record, but is only used when the program compares the strings.

Types of normalization are:

• NACO/CJK - retains spaces and subfield delimiters
• FULL - all spaces and subfield delimiters removed

 
 original field:
   $a Daniel Boone :$b a pioneer.
 
 normalized (naco/cjk):
   $ DANIEL BOONE $ A PIONEER
 
 normalized (full):
   DANIELBOONEAPIONEER

Length

This refers to how much of a given string the program will present for potential matches from the 245 $a & $b (max length = 2048 characters): Using a length of 10 gives us this example:

 
 original heading:
   $a Daniel Boone :$b a pioneer.
 
 normalized (full), length = 10:
   1-------10
   DANIELBOONEAPIONEER

Words

This pertains to the number of words to be used in the verification for 245 $a & $b:

 
 original heading:
   $a Daniel Boone :$b a pioneer.
 
 words = 2:
   Daniel, Boone, A, or Pioneer are all possibilities for keyword matching.

NOTE: Non-filers are excluded from Words.

Must Verify

This option requires the given field to match between the two records. It also means that the verify field in question must exist in both records (and must match). This is typically common to include as part of the 245 title verification, though other fields may find it useful as well.

Only if Both

This only does a verify comparison if both records have a specified field; verifies as true if only one of the records has the field. If this option was used on the 1xx field, the following would be true: Example 1:

 
 Record A has:
   100 $a Twain, Mark.
   245 $a Adventures of Huckleberry Finn.
 
 Record B has no 100
   245 $a Adventures of Huckleberry Finn.

RESULT: This would be a match because the 100 exists in one but not the other.

However, when two records each have their own 1XX field and they differ, we have this scenario:

 
 Record A has:
   100 $a Twain, Mark.
   245 $a Adventures of Huckleberry Finn.
 
 Record B has:
   100 $a Clemens, Samuel.
   245 $a Adventures of Huckleberry Finn.

RESULT: This would not be a match because the 100 differs.

Default

Group 1 (010, 020, 022)
	245 $a, $b main entry must verify (full, naco); all characters are considered

links

2.1 - 2.2 - 2.3 - 2.4 - 2.5 - 2.6 - 2.7 - 2.8 - 2.9 - 2.10 - 2.11 - 2.12 - 2.13

---

1.0 - 2.0 - 3.0 - 4.0 - 5.0 - 6.0