Fig. 11

Execution time (left) and residual RMS (right) results are shown for all samples. For these samples TNT-NN always produces a solution in less execution time than alternative methods. Like many linear algebra methods, TNT-NN execution time is strongly linked to problem size. Excluding trivial problems (the synthetic UMN logo), TNT-NN always produces residual RMS values that are less than or equal to those produced by competing methods. Without violating compact support, the residual RMS value produced by TNT-NN for a given sample is relatively consistent. Variations in resolution or increasing the measurement domain around the sample provides less than an order of magnitude improvement in residual RMS