Indexing CHARLYN P. SALCEDO, RL

Role of Indexing in Information Retrieval Relationship of Indexing, Abstracting and Searching (Cleveland and Cleveland, 2001, p. 31)‏ DOCUMENT INDEXING TOOL INDEX ABSTRACT PATRON

by type or form of material indexed 1. Book index* Reasons for Preparing a Book Index collects the different ways of wording the same concept. filters information for the reader. pinpoints information

Components of a book index entry: main heading subheading locator cross references World Wide Web (WWW)‏ browsers, 78 components, 89 development, 100-156 see also Internet

2. Periodical index* consistency becomes the most challenging part open-ended projects scope is broader 3. Newspaper index vocabulary control becomes a paramount challenge

Difference between Book & Periodical Indexes Compiled only once and within a relatively short time and usually performed by a single person. Deals with a more or less well- defined central topic. A continuous process and more often performed by a team of indexers and lasting for an extended period. Deals with a great variety of topics.

Difference between Book & Periodical Indexes Indexing terms are almost always derived from the text. Specificity is largely governed by the text itself. Terminology must be consistent and derived from a controlled vocabulary. Terms are prescribed by a controlled vocabulary and their level of specificity may be lower than the book index.

Difference between Book & Periodical Indexes Every single page of a book must be read. Entire text is virtually subject to indexing. Always bound with the indexed text. Exmaple: Antiquanrian, 15, 36 Library, 3, 5, 20, 60 Articles are scanned for indexable items and may rely on an abstract or summary compiled. A periodical index will depend on a number of policy decisions. Compiled separately.

by physical form card index printed index microform index computerized index automatic indexing computer-assisted indexing

Types of Indexes Author Indexes Whose entry points are people, organizations, corporate authors, government agencies, university Example Abel, Darrel – The Moral Picturesque Choice – v26- D’08 – p64 ABMS Compendium of Certified Medical Specialists -2010-2011 – p34

Example: Corporate Body Agriculture, Department of Health, Department of Trade and Industry, Department of

Example: Personal Names Anyayahan, May C. Fitzgerald, F. Scott John XVI, Pope Pius Zamora, Lt. Armando

Alphabetical index Advantage: More convenient to use and follows an order that is familiar to users. Drawbacks: synonymy scattering of entries Example: “Pecan Tress” or “Trees”

-by classes or by subjects headings Advantages: Classified index -by classes or by subjects headings Advantages: useful for generic searches. Brings similar things together. Drawbacks: Most users find them difficult to use. Needs a secondary file. One cannot enter it directly as one can with alphabetical sequences of names. Ex: Abortion Goldstein, R. D. Mother-love and abortion Hursthouse, R. Beginning Lives Abuse of the elderly see Elderly abuse

by type or form of material indexed 1. Book index* Reasons for Preparing a Book Index collects the different ways of wording the same concept. filters information for the reader. pinpoints information

Components of a book index entry: main heading subheading locator cross references World Wide Web (WWW)‏ browsers, 78 components, 89 development, 100-156 see also Internet

2. Periodical index* consistency becomes the most challenging part open-ended projects scope is broader 3. Newspaper index vocabulary control becomes a paramount challenge 4. Audiovisual materials index textual labeling is needed along with image matching

Difference between Book & Periodical Indexes Compiled only once and within a relatively short time and usually performed by a single person. Deals with a more or less well- defined central topic. A continuous process and more often performed by a team of indexers and lasting for an extended period. Deals with a great variety of topics.

Difference between Book & Periodical Indexes Indexing terms are almost always derived from the text. Specificity is largely governed by the text itself. Terminology must be consistent and derived from a controlled vocabulary. Terms are prescribed by a controlled vocabulary and their level of specificity may be lower than the book index.

Difference between Book & Periodical Indexes Every single page of a book must be read. Entire text is virtually subject to indexing. Always bound with the indexed text. Exmaple: Antiquanrian, 15, 36 Library, 3, 5, 20, 60 Articles are scanned for indexable items and may rely on an abstract or summary compiled. A periodical index will depend on a number of policy decisions. Compiled separately.

by physical form card index printed index microform index computerized index automatic indexing computer-assisted indexing