0
2
0
0.2
0.4
0.6
0.8
1
0
2
4
6
Candidate
Observations
Ground truth
step=0
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
BO with UCB acquisition function
x
x
y
Acquisition value
▶
◼
plotly-logomark