Exhaustivity

Contents

9.1. Recall and Precision.
9.1.1. A Definition of Recall.
9.1.2. A Definition of Precision.
9.1.3. The Impact of Exhaustivity on Recall and Precision.
9.2. The Calculation of Exhaustivity: Terms Versus Headings
9.3. Our Examples.
9.3.1. A Book Index.
9.3.2. An Indexing and Abstracting Service.
9.3.3. A Full-Text Encyclopedia/Digital Library.
● 1 definition of exhaustivity of indexing

● 2

● 3 exhaustive indexing of authors

● 4 range of exhaustivity

● 5 relationship of exhaustivity to size of documentary units

● 6 advantages of high versus low exhaustivity

● 7 examples of low exhaustivity

● 8 examples of high exhaustivity

9.1. Recall and Precision.

● 9 impact of exhaustivity on recall and precision

9.1.1. A Definition of Recall.

● 10

● 11 impossibility of recall calculation

● 12 recall versus relative recall

● 13 definitions of relevance

9.1.2. A Definition of Precision.

● 14

● 15 inverse relationship of recall and precision

9.1.3. The Impact of Exhaustivity on Recall and Precision.

● 16

● 17

● 18 role of high-threshold indexing in high-precision IR

● 19 role of automatic indexing in high-recall IR

● 20 role of human indexing versus automatic indexing in high-precision IR

9.2. The Calculation of Exhaustivity: Terms Versus Headings

● 21 terms versus headings for calculation of exhaustivity

● 22 calculation of exhaustivity in displayed indexes versus non-displayed indexes

● 23

9.3. Our Examples.

● 24 relationship of documentary units to exhaustivity

● 25

9.3.1. A Book Index.

● 26 exhaustivity of human indexing for book indexes

● 27 exhaustivity of automatic indexing for book indexes

● 28 alternative levels of exhaustivity for book indexes

9.3.2. An Indexing and Abstracting Service.

● 29

● 30 exhaustivity for routine documents

● 31 exhaustivity of human indexing for important documents

● 32 exhaustivity of automatic indexing for important documents

9.3.3. A Full-Text Encyclopedia/Digital Library.