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Information source may refer to: Information source (mathematics), a kind of sequence of random variables; Source text, a text (sometimes oral) from which information or ideas are derived; Guide to information sources, a kind of "metabibliography". Ideally it is not just a listing of bibliographies, reference works and other source texts, but ...
Information is an abstract concept that refers to something which has the power to inform.At the most fundamental level, it pertains to the interpretation (perhaps formally) of that which may be sensed, or their abstractions.
A secondary source is one that gives information about a primary source. In a secondary source, the original information is selected, modified and arranged in a suitable format. Secondary sources involve generalization, analysis, interpretation, or evaluation of the original information. The most accurate classification for any given source is ...
It is common in information theory to speak of the "rate" or "entropy" of a language. This is appropriate, for example, when the source of information is English prose. The rate of a source of information is related to its redundancy and how well it can be compressed, the subject of source coding.
Sources of information are commonly categorized as primary, secondary, or tertiary sources.In brief, a primary source is one close to the event with firsthand knowledge (for example, an eyewitness); a secondary source is at least one step removed (for example, a book about an event written by someone not involved in it); and a tertiary source is an encyclopaedia or textbook that provides a ...
A source text [1] [2] is a text (sometimes oral) from which information or ideas are derived.
A Guide to information sources (or a bibliographic guide, a literature guide, a guide to reference materials, a subject gateway, etc.) is a kind of metabibliography. Ideally it is not just a listing of bibliographies , reference works and other source texts , but more like a textbook introducing users to the information sources in a given field ...
A tertiary source is an index or textual consolidation of already published primary and secondary sources [6] that does not provide additional interpretations or analysis of the sources. [ 7 ] [ 8 ] Some tertiary sources can be used as an aid to find key (seminal) sources, key terms, general common knowledge [ 9 ] and established mainstream ...