empty 2d domain,dubins car: measure number of witness neighbourhood expanded after some iterations with the folling parameters: delta = 0.03 delta_percent_clamp_low = 0.1 delta_percent_clamp_high = 1 delta_s = 0.02 delta_v = 0.04 iterations = 4000 scenario: obs_sparse, isound1 1 baseline + no witness disturbance: (200) done 2 no witness disturbance + frontier node sel: (200) done 3 no witness disturbance + control sel: (200) done 4 no witness disturbance + frontier node sel + control sel: (200) done