Common use of Methods selection methodology Clause in Contracts

Methods selection methodology. The database of 42 508 800 values obtained with the four selection criteria considered is very large and hence cannot be easily analyzed. Moreover, the various denoising method parameters are not all independent one from each other. The analysis wavelet type and the number of anal- ysis levels are mutually independent and are also independent from the other parameters. On the other hand, the three denoising techniques parameters (the thresholding rule, the threshold expression and the noise estimate expression) are not mutually independent: the mathematical expression for the thresholding rule depends on the threshold expression which depends on the noise estimate expression (see Section 2.2). Therefore it has been chosen in this paper to study globally the influence of these three parameters on the denoising performance. The perfor- mance of the 54 denoising techniques should therefore be studied simultaneously, for each of the four selection criteria considered. For this purpose, we designed an appropriate algorithm to study the performance of these 54 denoising techniques. The general methodology used to process the database of 42 508 800 values consists of four steps, which are defined below and presented in Fig. 2.2.