With the aim of improving rapidity and accuracy quadrotor UAV positional trajectory tracking, this paper proposes a fuzzy automatic disturbance rejection control based on improved whale optimization algorithm (IWOA-Fuzzy-ADRC). (1) To address problems low slow convergence traditional algorithm, combination logistic chaos mapping skew tent is applied to improve diversity initial population. (2) ...

Multilevel thresholding image segmentation is one of the most widely used methods in field segmentation. This paper proposes a multilevel technique based on an improved whale optimization algorithm. The WOA has been applied to many complex problems because its excellent performance; however, it easily falls into local optimization. Therefore, firstly, mixed-strategy-based algorithm (MSWOA) prop...

In many fields, such as oil logging, it is expensive to obtain labeled data, and a large amount of inexpensive unlabeled data are not used. Therefore, necessary use semisupervised learning accurate classification with limited data. The support vector machine (S3VM) the most useful method in learning. Nevertheless, S3VM model performance will degrade when sample number categories even or have lo...

The non-orthogonal multiple access (NOMA) scheme has proven to be a potential candidate enhance spectral potency and massive connectivity for 5G wireless networks. To achieve effective system performance, user grouping, power control, decoding order are considered fundamental factors. In this regard, joint combinatorial problem consisting of grouping control is considered, obtain high spectral-...