{"id":975,"date":"2011-10-31T13:41:46","date_gmt":"2011-10-31T13:41:46","guid":{"rendered":"http:\/\/deazone.com\/en\/?p=975"},"modified":"2011-11-07T17:20:59","modified_gmt":"2011-11-07T17:20:59","slug":"faqconvex-cone-conical-hull","status":"publish","type":"post","link":"http:\/\/deazone.com\/en\/faqconvex-cone-conical-hull","title":{"rendered":"Convex cone &#8211; Conical hull"},"content":{"rendered":"<p>A convex cone has its vertex as its origin and includes all nonnegtive linear combinations of its points. The envelopment surface obtained from the CCR model has the shape of a convex cone. If the situation in Figure 1 were drawn 3-dimensionally, the efficiency frontier would consist of a set of interlaced facets formed by hyperplanes emanating from the origin and forming a conical structure. The efficient units would lie on top of the facets, while the inefficient ones would be covered under the cone. For a clear visual representation, refer to Ah and Seiford (1993).<br \/>\n-Ah A and Seiford L (1993), &#8216;The mathematical programming approach to efficiency analysis&#8217;, in: Fried H, Knox C A K and Schmidt S (editors), The measurement of productive efficiency: techniques and applications, Oxford University Press.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A convex cone has its vertex as its origin and includes all nonnegtive linear combinations of its points. The envelopment surface obtained from the CCR model has the shape of a convex cone. If the situation in Figure 1 were drawn 3-dimensionally, the efficiency frontier would consist of a set of interlaced facets formed by &hellip; <\/p>\n<p><a class=\"more-link btn\" href=\"http:\/\/deazone.com\/en\/faqconvex-cone-conical-hull\">Continue reading<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1,50],"tags":[53],"_links":{"self":[{"href":"http:\/\/deazone.com\/en\/wp-json\/wp\/v2\/posts\/975"}],"collection":[{"href":"http:\/\/deazone.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/deazone.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/deazone.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/deazone.com\/en\/wp-json\/wp\/v2\/comments?post=975"}],"version-history":[{"count":6,"href":"http:\/\/deazone.com\/en\/wp-json\/wp\/v2\/posts\/975\/revisions"}],"predecessor-version":[{"id":13690,"href":"http:\/\/deazone.com\/en\/wp-json\/wp\/v2\/posts\/975\/revisions\/13690"}],"wp:attachment":[{"href":"http:\/\/deazone.com\/en\/wp-json\/wp\/v2\/media?parent=975"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/deazone.com\/en\/wp-json\/wp\/v2\/categories?post=975"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/deazone.com\/en\/wp-json\/wp\/v2\/tags?post=975"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}