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Reference.org
Input–output model
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<p>In <a href="/facts/Economics/HYctA2Dn">economics</a>, an input–output model is a quantitative economic <a href="/facts/Mathematical_model/CGhyuxgz">model</a> that represents the interdependencies between different sectors of a national economy or different regional economies. <a href="/facts/Wassily_Leontief/f0LrLYVU">Wassily Leontief</a> (1906–1999) is credited with developing this type of analysis and earned the <a href="/facts/Nobel_Prize_in_Economics/8BBwNwre">Nobel Prize in Economics</a> for his development of this model. </p>