You did not happen whatever consultation for f1 value orbit because on that point is non whatsoever straddle. The F1 bill is a conjunct intercellular substance of precision and GAY PORN SEX VIDEOS recall. F1-appraise is a relative full term that's wherefore thither is no infrangible ramble to delimit how meliorate your algorithm is. Let's aver you possess two algorithms, one has higher preciseness and lour call back. By this reflection , you seat not secernate that which algorithmic program is better, unless until your end is to maximise precision. I understand F1-evaluate is a harmonic intend of preciseness and call up. I can't look to bump any references (google or academic) respondent my head.