The bound .

If we have updated the value of less than 10 times, we will set (see Section 3.4.1 to know about ). This is because we are not sure of the value of if it has been updated less than 10 times.

If the step size we have computed at step 3 of the CONDOR algorithm is , then .

Otherwise, , where is an estimate of the slope of around (see Section 4.10 to know how to compute ).

We see that, when the slope is high, we permit a more approximative ( big value of ) model of the function.

Frank Vanden Berghen 2004-04-19