Using Help
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Adobe Acrobat Help
Searching and Indexing Document Collections
Using Help
|
Contents
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Index
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220
•
If you are unsuccessful in searching for a phrase that includes a common word, it is
probably because it is a specified stopword.
•
If you are unsuccessful in searching for a term that includes numbers, it is probably
because numbers have been excluded from the index. Adobe Acrobat Catalog defines
a number to be a sequence of one or more digits (0 through 9), optionally preceded by
a minus sign (-), optionally separated by one or more commas (,) or periods (.), and
optionally containing a decimal point, which can be a period (.) or a comma (,).
•
If you use a separator character in a search term, it is discarded automatically. Separator
characters include all symbols, the space character, and punctuation characters except
the apostrophe. When indexing a PDF document, Acrobat Catalog uses separator
characters to recognize where one term ends and the next term begins.
•
If alphanumeric terms are made up of numbers and separator characters, they can also
be excluded.
Using Boolean operators
To avoid building inaccurate search queries, follow these guidelines:
•
You can use operators in text and Document Info text boxes.
•
You can use =, ~, and != with text only to perform
exact matches
,
contains
, and
does not
contain
searches, respectively.
•
You can use comparison operators (<, <=, >, >=) with values of the same type.
•
When NOT is used with either or both of the AND and OR operators, it is evaluated
before either the AND or OR. For example,
evolution AND NOT Darwin
finds all
documents that contain the word
evolution
but not the word
Darwin
.
•
When you combine AND and OR in the same expression, AND is evaluated before OR.
For example,
Darwin OR origin AND species
finds all documents that contain
Darwin
or
that contain both
origin
and
species
.
•
When you use parentheses, you change the default order of evaluation for Boolean
operators. For example,
(Darwin OR origin) AND species
finds all documents that contain
either
Darwin
and
species
or that contain
origin
and
species
. Parentheses can be nested.
•
When you use a literal phrase that contains an operator name, a symbol for an operator
name (such as & for AND), or parentheses, the phrase must be enclosed in quotation
marks. For example:“cats and dogs” finds all documents that contain the phrase
cats
and dogs
, not all documents that contain either the word
cats
or the word
dogs
. The
phrase cats & dogs also needs quotation marks to be interpreted literally.
In addition to
and
,
or
,
not
, and parentheses, the symbols that require quotation marks are
However, search phrases in quotation marks that contain parentheses or vertical bars can
produce unexpected results.
&
AND
|
and
,
OR
!
NOT