Unlike full-text indices, partial-text services restrict the depth indexed to reduce index size. Meta search engines reuse the indices of other services and do not store a local index, whereas cache-based search engines permanently store the index along with the corpus. Media types such as video, audio, and graphics are also searchable. Popular engines focus on the full-text indexing of online, natural language documents. An alternate name for the process, in the context of search engines designed to find web pages on the Internet, is web indexing. Index design incorporates interdisciplinary concepts from linguistics, cognitive psychology, mathematics, informatics, and computer science. ![]() ![]() Search engine indexing is the collecting, parsing, and storing of data to facilitate fast and accurate information retrieval.
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