An '''artifact''' (U.S.) or '''artefact''' (U.K.) is:
An '''artifact''' (U.S.) or '''artefact''' (U.K.) is:
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* A human-made object, such as a [[tool]], [[weapon]] or [[decoration|ornament]], especially those of archaeological or [[historical]] interest.
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* A [[human]]-made object, such as a tool, weapon or ornament, especially those of archaeological or historical interest.
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* A human-made object that is a [[prototype]] or [[standardization|standard]] of [[measurement]].
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* A human-made object that is a prototype or standard of measurement.
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* A structure or feature, visible only as a result of external action or [[experimental error]]. Also known as disturbance in biopotential signals.
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* A [[structure]] or feature, visible only as a result of external action or [[experiment]]al error. Also known as disturbance in biopotential signals.
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* Artefact is a fulltext information retrieval system capable of searching through [[databases]] containing documents written in a [[natural language]] [http://en.wikipedia.org/w/index.php?title=Artifact&action=edit]
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* Artefact is a fulltext [[information]] retrieval system capable of searching through databases containing documents written in a natural language