2. INDEXES
Can be categorized many ways;
By arrangement or by searching structure
or by specific subject fields or by purpose.
Can be a mix of different types of indexes.
e.g. alphabetical and author.
3. FORMS of INDEX
By arrangement,
(E.g. alphabetical, classified…)
By the types of materials index,
(E.g. book, periodical, newspaper index…)
By physical form.
(E.g. card, microform, computerized index)
4. ALPHABETICAL INDEXES
Is the most common method.
More convenient and follows familiar
order.
Based on orderly principle of letters of the
alphabet.
All entries are in one alphabetical order,
including subject terms, author names and
place names.
5. ALPHABETICAL INDEXES
MAJOR DRAWBACKS: problems of
synonym and scattering of entries.
Scattering- Subjects are not drawn together
under generic term
E.g. When looking for the information on
janitor fish, do we look for janitor fish or
fish?
6. AUTHOR INDEXES
Not the most common type of indexes, but
not a rarity.
Are those whose entry points are people,
organizations, corporate authors, etc…
Users are guided to titles of documents by
the way of authors.
Authors can also be used as an indirect
subject approach.
7. AUTHOR INDEXES
Authors are strong indicators of subject
content (Cleveland, 1976)
e.g. Freud, Sigmund- Psychology or
psychoanalysis.
8. BOOK INDEXES
Most people (reading public) think of.
Are lists of words, generally alphabetical, at
the back of the book, giving the page
location of the subject or name associated
with each word.
Pinpoints the information to the user.
ISSUE: not every book (e.g reference book)
has a quality index, if not, none at all.
9. CITATION INDEXES
Consists of a list of articles, with a sublist
under each article of subsequently
published papers that cite the articles.
Shows who cited the paper.
This kind of index implies that a cited
paper has an internal subject relationship
with the papers that cited it, and use this
relationship to cluster related documents–
citations reflect document content.
11. CLASSIFIED INDEXES
has its contents arranged systematically by
classes or subject headings.
Have an important role to play (especially
in scientific indexing, e.g. biology).
But general indexes that are classified
mystify the general users, they do not
understand how they are constructed.
Indexes SHOULD BE user-oriented.
12. COORDINATE INDEXES
allow terms to be combined or
coordinated.
The idea of punching or notching a card
and then using a mechanical device, such as
long needles, to drop out cards containing
the combination of index terms of interest.
The basis of modern retrieval systems,
world wide web search tools.
13. COORDINATE INDEXES
Is really a process; coordinating produces
an index.
e.g. individual index terms Pecan and Trees
are combined, we have a new class of
things: Pecan trees.
14. CUMULATIVE INDEXES
is a combination or merging of a set of
indexes over time.
Indexes for established works can often
cover many decades.
Generally, apply to journals and to large,
important works and are published as
separate volumes.
Are complex and usually done by teams of
indexers.
15. FACETED INDEXES
Facet, by definition, means one side of
something that has many sides.
In a faceted indexing system, any subject
is not a single unit but has many aspects;
A facet index attempts to discover all the
individual aspects of a subject and then
synthesis them in a way that best describes
the subject under discussion.
16. FACETED INDEXES
A faceted scheme is a type of
synthetic classification,
Often called an analytic-synthetic
system.
PHILOSOPHICAL BASIS: an author looks
at a subject in a different way or brings out
new ideas or a new discovery.
17. FACETED INDEXES
With a faceted system, we put together the class
most closely representing the informational
concepts in the new document.
