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Background Information

Review of Existing Indexing Languages

Analysis of Structure of Indexing Language in Thesaurus

Thesaurus

User Guide
Alphabetical Display
Hierarchical Display
Top Term Display
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Graphical Display

ANALYSIS OF STRUCTURE OF INDEXING LANGUAGE IN THESAURUS

• Suitability for the Environment
• Type of Indexing Language
• Pre-Coordinate Headings and Post-Coordinate Retrieval
• Forms of Terms
• Precision and Recall
• Specificity and Exhaustivity

Pre-Coordinate Headings and Post-Coordinate Retrieval

Our indexing does not make use of pre-coordinate headings and is designed for post-coordinate retrieval using truncation and Boolean logic. In our case, false drops are not expected to result frequently from the Boolean logic searches. This is because the same words in a compound term do not appear in a different sequence in another term. For example, a Boolean search using "portly AND cut" will retrieve "portly cut" but not "cut portly".

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