In this embodiment, even when the lenticular plate 16 is formed with a synthetic resin such as acrylic of large thermal expansion coefficient, the pitch shift from the light receiving portion 8 resulting from the thermal expansion or shrinkage can be automatically compensated for. ...
Notably, shrinkage methods have demonstrated exceptional efficacy in financial portfolio allocation. For the estimation of sparse or approximately sparse covariance matrices, various element-wise thresholding techniques for the sample covariance matrix have emerged. These include hard thresholding [12,13], ...
Notably, shrinkage methods have demonstrated exceptional efficacy in financial portfolio allocation. For the estimation of sparse or approximately sparse covariance matrices, various element-wise thresholding techniques for the sample covariance matrix have emerged. These include hard thresholding [12,13], ...