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Why LC Subject Headings Are More Important Than Ever

机译:为什么LC主题标题比以往任何时候都重要

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摘要

We need to get over the uncritical habit of regarding subject-heading strings--and the online public access catalog (OPAC) displays that bring them to our attention--as mere carryovers from the age of manual card catalogs. Instead, we need to consider them afresh in the light of their new and greatly increased power to aid researchers in the online age. By "strings" I am referring to the distinction between precoordinated, ordered phrases in Library of Congress Subject Headings (LCSH) versus postcoordinated Boolean combinations of individual terms, elements, or facets. For example:
机译:我们需要克服关于主题标题字符串的不苛刻的习惯-并且在线公共访问目录(OPAC)的显示引起了我们的注意-这仅仅是从手工卡片目录时代起的遗留物。取而代之的是,我们需要根据他们在网络时代为研究人员提供帮助的新的强大功能来重新考虑他们。我所说的“字符串”是指国会主题词库(LCSH)中预协调的有序短语与各个术语,要素或构面的后协调布尔组合之间的区别。例如:

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