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. 2020 Jan 14;13:1408. doi: 10.3389/fnins.2019.01408

TABLE 2.

Nine bi-tasking benchmark problems.

Two-task problem Intersection and similarity Task Rs DT Global optimal Landscape
1 CI+HS Griewank 1.0000 50 (0, 0, . . ., 0)∈[−100, 100]50 Multimodal+Non-separable
Rastrigin 50 (0, 0, . . ., 0)∈ [−50, 50]50 Multimodal+Non-separable
2 CI+MS Ackley 0.2261 50 (0, 0, . . ., 0)∈ [−50, 50]50 Multimodal+Non-separable
Rastrigin 50 (0, 0, . . ., 0)∈ [−50, 50]50 Multimodal+Non-separable
3 CI+LS Ackley 0.0002 50 (42.0969, . . ., 42.0969)∈ [−50, 50]50 Multimodal+Non-separable
Schwefel 50 (420.9687, . . ., 420.9687)∈ [−500, 500]50 Multimodal+Separable
4 PI+HS Rastrigin 0.8670 50 (0, 0, . . ., 0)∈ [−50, 50]50 Multimodal+Non-separable
Sphere 50 (0, . . ., 0, 20, . . ., 20)∈ [−100, 100]50 Unimodal+Separable
5 PI+MS Ackley 0.2154 50 (0, . . ., 0, 1, . . ., 1)∈ [−50, 50]50 Multimodal+Non-separable
Rosenbrock 50 (1, 1, . . ., 1)∈ [−50, 50]50 Multimodal+Non-separable
6 PI+LS Ackley 0.0725 50 (0, 0, . . ., 0)∈ [−50, 50]50 Multimodal+Non-separable
Weierstrass 25 (0, 0, . . ., 0)∈ [−0.5, 0.5]25 Multimodal+Non-separable
7 NI+HS Rosenbrock 0.9434 50 (1, 1, . . ., 1)∈ [−50, 50]50 Multimodal+Non-separable
Rastrigin 50 (0, 0, . . ., 0)∈ [−50, 50]50 Multimodal+Non-separable
8 NI+MS Griewank 0.3669 50 (10, 10, . . ., 10)∈ [−100, 100]50 Multimodal+Non-separable
Weierstrass 50 (0, 0, . . ., 0)∈ [−0.5, 0.5]50 Multimodal+Non-separable
9 NI+LS Rastrigin 0.0016 50 (0, 0, . . ., 0)∈ [−50, 50]50 Multimodal+Non-separable
Schwefel 50 (420.9687, . . ., 420.9687)∈ [−500, 500]50 Multimodal+Separable