We tried C = 0.1, 0.5, 1.0, 2.0, 5.0, 10.0, 20.0, 50.0, and 100.0 for each of SVM and LR where the size of training data is 50 and chose the C value that performs best.
we set C = 5.0 for SVM and C = 50.0 for LR.