question: public static double probToLogOdds ( double prob ) { if ( gr ( prob , 1 ) || ( sm ( prob , 0 ) ) ) { throw new IllegalArgumentException ( "probToLogOdds: probability must " + "be in [0,1] " + prob ) ; } double p = SMALL + ( 1.0 - 2 * SMALL ) * prob ; return Math . log ( p / ( 1 - p ) ) ; }
target:  Returns the log-odds for a given probabilitiy.