IAEAInternational Atomic Energy Agency

International Atomic Energy Agency

International Nuclear Information System (INIS)

INIS/ETDE THESAURUS MAINTENANCE & USE OF COMPUTER-ASSISTED

INDEXING (CAI)

36th Consultative Meeting of the INIS Liaison Officers

Neviana RashkovaINIS Subject Specialist

INIS Unit

IAEA

INIS/ETDE THESAURUS - definition

• Thesaurus"A thesaurus is a terminological control device used in translating from the

natural language of documents, indexers or users into a more constrained system language. It is a controlled and dynamic vocabulary of semantically and generically related terms which covers a specific domain of knowledge“

• INIS/ETDE ThesaurusThe INIS/ETDE Thesaurus contains the controlled terminology for indexing all

information within the subject scopes of the International Nuclear Information System (INIS) and the Energy Technology Data Exchange (ETDE). The terminology is intended for use in subject descriptions for input or retrieval of information in these systems.

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INIS/ETDE THESAURUS

• Descriptors 30 681 descriptors with scope notes• 22 012    valid terms and

• 8 669      forbidden terms

• Hidden terms

• Wordblocks with relations

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ADAPTIVE SYSTEMS

2004-05-28

Systems that have the ability to learn, change their state, or otherwise react to stimuli or changes in their environment.

UF self-learning systems

*BT1 computerized control systems

RT algorithms

BUBBLE CHAMBERS

*BT1 gas track detectors

NT1 cryogenic bubble chambers

NT1 heavy liquid bubble chambers

NT1 ultrasonic bubble chambers

RT digitizers

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STRUCTURE OF THE INIS/ETDE THESAURUS

• Descriptors for indexing: valid and forbidden terms

LOVIISA-1 REACTOR vt

1976-08-13

Loviisa, Finland.

UF imatran voima-1 reactor

UF imatran voima power reactor

UF loviisa reactor ft

*BT1 wwer type

water coolant ft

USE WATER vt

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STRUCTURE OF THE INIS/ETDE THESAURUS

• Hidden terms – for computer assisted indexing

Br2 reactor ht

BR-2 REACTOR

belgian reactor 2 - forbidden

USE br-2 reactor

pressurized water nuclear reactor ht

pressurized water reactor ht

USE PWR type reactors vt

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STRUCTURE OF THE INIS/ETDE THESAURUS

• “Wordblock” The descriptor is placed in its correct semantic context

• Interrelationships: preferential (used for, seen for…), hierarchical (BT, NT…) and affinitive (RT)

BRASS

*BT1 copper base alloys

*BT1 zinc alloys

NT1 brass-alpha

NT1 brass-beta

RT heusler alloys

RT muntz metal

RT ounce metal

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STRUCTURE OF THE INIS/ETDE THESAURUS

• Scope notes – definition, history notes etc.

For some descriptors where there could still exist a possibility of ambiguity

SOLUTIONS

1999-10-11

For chemical solutions only. For mathematics

see the word block of MATHEMATICAL

SOLUTIONS.

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THESAURUS ON THE WEB

http://www.iaea.org/inis/Products-services/Publications/index.html

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INIS/ETDE THESAURUS – pdf version

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INIS/ETDE THESAURUS

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INIS/ETDE THESAURUS - translations

• Monolingual Pdf versions with full hierarchy of:

Arabic, English, German, French, Spanish, Japanese, Russian, Chinese

• Multilingual dictionariesBilingual pdf versions without hierarchy

EN/LA LA/EN

• Interactive Multilingual ThesaurusHtml version with a leading language; translation and scope notes

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INIS/ETDE THESAURUS - interactive

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SUBJECT INDEXING WITH THESAURUS

• Identify concepts – translate into valid descriptors

• Use the most specific descriptor – always prefer NTs

• Do not assign BT if its NT is assigned

• Use the word block – BT – for correctness; NT – for specificity; RT – for completeness

• Avoid overindexing (best between 5 and 20)

• Propose a new term when necessary - according to the rules

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SUBJECT INDEXING: TOOLS

• There are two main INIS products used for indexing:

WinFibre and CAI• WinFibre – for input preparation: bibliographic description, subject

classification and indexing

• CAI (Computer Assisted Indexing) – for subject classification and indexing

• INIS/ETDE Thesaurus is incorporated in both products and regularly updated• In WinFibre – monthly

• In CAI – less frequently; Thesaurus Supplement

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COMPUTER ASSISTED INDEXING - CAI

• Automatic text analysis• Analyses the title and abstract

• Uses the Thesaurus

• Uses hidden terms – continuously expanded set of words and expressions

• Batch mode• Automatic run; review and deleting/adding descriptors

• On-line mode• Interactive assignment of category and descriptors

• INIS/ETDE Subject category scheme included

• INIS/ETDE Thesaurus included

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CAI on-line

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ASSIGNING SUBJECT CATEGORIES

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CAI on-line

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Thank you!