Documentary Units

Contents

6.1. Some Examples.
6.2. One of the Few “Laws” in Information Retrieval.
6.3. Documentary Units Versus Surrogates.
6.4. Multiple Documentary Units.
6.5. Our Examples.
6.5.1. A Book Index.
6.5.2. An Indexing and Abstracting Service.
6.5.3. A Full-Text Encyclopedia/Digital Library.
● 1 information retrieval versus document retrieval

● 2 role of documentation in information retrieval

● 3 size of documentary units

● 4

● 5 complete documents versus parts of documents

● 6 documentary units as units of analysis

6.1. Some Examples.

● 7 documentary units for indexing and abstracting services

● 8 documentary units for collections of documents and anthologies

● 9 documentary units for video recordings and motion pictures

● 10 documentary units for music

● 11 documentary units for book indexes

● 12 pages versus paragraphs as documentary units

● 13 advantages of paragraphs as documentary units

● 14 paragraphs as documentary units for electronic texts

● 15 NISO recommendation on paragraphs as documentary units; numbering of paragraphs

● 16 text sections as documentary units

● 17 paragraphs as documentary units

● 18

● 19

● 20 documentary units for hypertext

● 21 documentary units for hypertext on world-wide web

● 22

6.2. One of the Few “Laws” in Information Retrieval.

● 23 documentary units as limiting factor in information retrieval

● 24 documentary units in library catalogs

● 25 advantages of smaller documentary units

6.3. Documentary Units Versus Surrogates.

● 26 documentary units versus surrogates in reference IR databases

● 27 abstracts versus documentary units

● 28 role of abstracts in information retrieval

● 29 smaller documentary units in reference IR databases

● 30 smaller documentary units in full-text IR databases

● 31

6.4. Multiple Documentary Units.

● 32 multiple documentary units in full-text IR databases

● 33 documentary units for automatic indexing

● 34 role of documentary units in IR databases

6.5. Our Examples.

6.5.1. A Book Index.

● 35

● 36

● 37 documentary units for book indexes in electronic media; books as hypertext

● 38 books in electronic media as hypertext

6.5.2. An Indexing and Abstracting Service.

● 39 terminology for indexing and abstracting services

● 40 documentary units for indexing and abstracting services

● 41 documentary units for high-use documents in indexing and abstracting services

● 42 documentary units for full-text searching

6.5.3. A Full-Text Encyclopedia/Digital Library.