three combination methods commonly used in tourism forecasting are the simple average method, the variance-covariance method and the discounted msfe method. these methods assign the different weights that can not change at each time point to each individual forecasting model. in this study, we introduce the iowga operator combination method which can overcome the defect of previous three combin...

Adaptive variance flooring has previously been suggested as a method to help preventing over-fitting of variance parameters during training of HMMs. With this method, the average variance over some calibration data set is multiplied by a constant variance flooring factor to produce the variance floor. In this paper, experiments with adaptive variance flooring is presented, in which we try to op...

One of the common algorithms used to reconstruct photoacoustic (PA) images is the non-adaptive Delayand-Sum (DAS) beamformer. However, the quality of the reconstructed PA images obtained by DAS is not satisfying due to its high level of sidelobes and wide mainlobe. In contrast, adaptive beamformers, such as minimum variance (MV), result in an improved image compared to DAS. In this paper, a nov...