{"id":980,"date":"2011-10-31T13:47:35","date_gmt":"2011-10-31T13:47:35","guid":{"rendered":"http:\/\/deazone.com\/en\/?p=980"},"modified":"2011-11-07T17:20:45","modified_gmt":"2011-11-07T17:20:45","slug":"faqconvexity-constraint","status":"publish","type":"post","link":"http:\/\/deazone.com\/en\/faqconvexity-constraint","title":{"rendered":"Convexity constraint"},"content":{"rendered":"<p>Ensures that the region specified by a set of points (units) forms a convex set. The BCC model is obtained by simply adding a convexity constraint Sigma (Lambdas)=1 to the dual of the CCR model, which means that each composite unit is a convex combination of its reference units. For a dull discussion on convexity, see a standard non-linear programming text such as Bazaraa et aI (1993). For details about BCC model See Banker et al (1984).<\/p>\n<p>-Banker, R.D., R.F. Charnes, &amp; W.W. Cooper (1984) &#8220;Some Models for Estimating Technical and Scale Inefficiencies in Data Envelopment Analysis, Management Science vol. 30, pp. 1078\u20131092.<br \/>\n&#8211; Bazaraa M, Sherahi H and Shetty C M, Nonlinear programming, John Wiley &amp; Sons, 1993, or later edition.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ensures that the region specified by a set of points (units) forms a convex set. The BCC model is obtained by simply adding a convexity constraint Sigma (Lambdas)=1 to the dual of the CCR model, which means that each composite unit is a convex combination of its reference units. For a dull discussion on convexity, &hellip; <\/p>\n<p><a class=\"more-link btn\" href=\"http:\/\/deazone.com\/en\/faqconvexity-constraint\">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\/980"}],"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=980"}],"version-history":[{"count":5,"href":"http:\/\/deazone.com\/en\/wp-json\/wp\/v2\/posts\/980\/revisions"}],"predecessor-version":[{"id":13688,"href":"http:\/\/deazone.com\/en\/wp-json\/wp\/v2\/posts\/980\/revisions\/13688"}],"wp:attachment":[{"href":"http:\/\/deazone.com\/en\/wp-json\/wp\/v2\/media?parent=980"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/deazone.com\/en\/wp-json\/wp\/v2\/categories?post=980"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/deazone.com\/en\/wp-json\/wp\/v2\/tags?post=980"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}