組織知識

Thursday, October 13, 2005

systems contexts for knowledge organization

inferfaces and search facilites

opacs have passed through three generations.
First-generation opacs expected exact matching of term and intolerant of user mistakes.
第一代的OPAC使用者必須正確的輸入檢索詞。

Second-generation OPACs began to rectify some of the limitations of the first system.
Seconfd -generation OPACs offered much better search facilities based upon keyword
searching and post-coordination of keywords.

第二代OPAC已經改善第一代的缺點,採用後調和式關鍵詞技術。

Third-generation OPACs use a natural-language interface,so that the user my input their
search strategy as a natural-language phrase.A wide range of search facilities such truncation
, and proximity searching is becoming common.

第三代OPAC採用自然語言方式檢索,採用切截和相似計素達到檢索。

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