Estimating Open Access Mandate Effectiveness: I. The MELIBEA Score Philippe Vincent-Lamarre, Jade Boivin, Yassine Gargouri, Vincent Lariviere, Stevan Harnad ABSTRACT: MELIBEA is a Spanish database that uses a composite formula with eight weighted conditions to estimate the effectiveness of Open Access mandates (registered in ROARMAP). We analyzed 68 mandated institutions for publication years 2…