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The features of the test problems.
| Problem | Features |
|---|---|
| DTLZ1 | Linear, multimodal |
| DTLZ2 | Concave |
| DTLZ3 | Concave, multimodal |
| DTLZ4 | Concave, biased |
| DTZL7 | Mixed, disconnected, multimodal |
| WFG1 | Mixed, biased |
| WFG2 | Convex, disconnected, multimodal, nonseparable |
| WFG3 | Linear, degenerate, nonseparable |
| WFG4 | Concave, multimodal |
| WFG5 | Concave, deceptive |
| WFG6 | Concave, nonseparable |
| WFG7 | Concave, biased |
| WFG8 | Concave, biased, nonseparable |
| WFG9 | Concave, biased, multimodal, deceptive, nonseparable |
