Uppu
2065438+September 28th, 2007 Creator in the field of quality fashion.
Controlled language is a standardized artificial language, including classified language with strong national retrieval function and subject language with strong characteristic retrieval function. The essence of controlled language is a concept recognition system, which expresses the concepts of document information characteristics and their relationships. The biggest difference between controlled language and natural language is that natural language is artificially controlled for specific needs, so that things can be expressed uniquely and accurately.
Benefits of controlled language retrieval:
(1) can express the theme concept of literature and retrieval theme simply and clearly;
⑵ It is convenient to organize concepts systematically and compare the consistency of indexing words and retrieval words when searching;
(3) The one-to-one correspondence between words and concepts can control semantically related words such as synonyms and polysemous words, and eliminate polysemy, polysemy and ambiguity;
(4) can show the relationship between concepts.
Disadvantages of controlled language retrieval:
(1) Limitations of concept expression and concept relation display;
(2) The contradiction between structural complexity and ease of use is hard to overcome, which makes it difficult for ordinary users to master this special language;
⑶ When natural language is converted into normative language, information distortion is inevitable;
⑷ It is difficult to compile, maintain and update the controlled indexes, and the cost is high.
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