content-based indexing 基于内容的索引
Search engines come in many flavors and forms, but almost all use some form of term-based indexing to rapidly locate matches.
虽然搜索引擎的风格和形式多种多样，但它们几乎全都使用基于词汇的索引方式来快速定位匹配项。
While this enriches the content about individual items for the user, it doesn't improve the search results of our local catalog, with its indexing based exclusively on MARC cataloging data.
它只是为读者加强了每个条目的内容，并没有改进本地联机目录的搜索结果，本地目录的索引完全是基于MARC编目数据。
The researchers will present the work at the International Workshop on Content-Based Multimedia Indexing in Madrid, Spain, next month.
下个月在西班牙的马德里，研究员将在基于内容的多媒体检索国际研讨会上展出他们的成果。
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