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. 2013 Jun 24;40(7):072502. doi: 10.1118/1.4810937

Figure 4.

Figure 4

Example separable parameter space WSSE objective functions for fitting a 3K compartment model to curves at five different noise levels. The minimum is deeper and better-defined for lower noise data, and becomes shallower as noise increases. However, for all noise levels the reformulated objective function remained well-behaved, and no complex topological features appeared with increasing noise levels.