sgd: only calibrate when the user wants you to
sgd: only calibrate when the user wants you to

hlin117/factorie,pogren-oracle/factorie,melisabok/factorie,digitalreasoning/factorie-scala-210,joprice/factorie,Craigacp/factorie,patverga/factorie,factorie/factorie,strubell/factorie,asubbaswamy/factorie,zxsted/factorie,malcolmgreaves/factorie