1. INDEXING LANGUAGES

2. Any vocabulary, controlled or uncontrolled used
for indexing ,along with the rules of usage.
Is much more than a list of index terms that are
acceptable to users.

3.  Helps users discriminate between terms and
reduces an ambiguity in the language.
 To assist both indexers and searchers in using
and manipulating the system.

4.  Assigned term
 Derived term

5.  An indexer must assign terms or descriptors on
the basis of subjective interpretation of the
concepts implied in the documents.
 The indexer determine the subject matter of the
document at hand.
 Assigned descriptors from a controlled
vocabulary, which identifies concepts
expressed by the documents author.

6.  All the descriptors are taken from the text itself.
 Sometimes called natural language or free text
indexing.

7.  Is a related group of words or phrases adopted
by a particular group of people to be used in an
indexing activity.
 Formal lists of the words in the controlled
vocabulary.

9.  Evolutionary vocabulary
- consists of raw material supplied by indexers.
- Which is edited or planned after the fact.
 Enumerated vocabulary
- Is generated as the result of a special study or
inquiry and a consensus of experts who
predetermine what the vocabulary should be
for an area of knowledge.

10.  Show vertical arrangements of words within
classes.
 Indicate synonymous relationships, near
synonymous relationships and related word
groups.

11.  Specific language, with words, relationships of
words and its own grammatical rules for
usage.
 It is a controlled , collected subset of natural
language.

12.  Consistency in indexing and searching.
 The control of synonyms, although it has many
other functions such as related words, more
specific words and broader words.