A direct measurement protocol allows reconstructing specific elements of the density matrix a quantum state without using tomography. However, protocols to date are primarily based on weak or strong measurements with an ancillary pointer, which interacts investigated system extract information about specified elements. Here, we present scheme phase-shifting operations do not need pointers. In t...

The coefficient of determination (R) is used for judging the goodness of fit in a linear regression model. It gives valid results only when the observations are correctly observed without any measurement error. The R provides invalid results in the presence of measurement errors in the data in the sense that sample R becomes an inconsistent estimator of population multiple correlation coefficie...

The original similarity measurement model is easy to ignore the processing of image details, resulting in poor accuracy measurement. In paper, we propose a for medical feature matrix based on convolutional neural network (CNN). First, Gaussian convolution kernel used obtain global and local data images, corresponding set formed. Second, layer CNN introduced, obtained by layer. Finally, construc...