Organization and Extraction for Information

The development of Internet makes the researches on information retrieval more
changeable. Actually, the so-called “information retrieval” is “text retrieval.” It is
necessary for users to find out the needed information from the retrieved texts. A
higher-level task is information extraction, which extracts the information based on
pre-defined templates. From the viewpoint of Library Science, these pre-defined
templates are the metadata, which describes the collection of libraries in common.
This paper discusses the relationships between metadata and information extraction
and how natural language processing helps the task of information extraction.