Evaluation Of Adaptive Algorithms Research Articles

Time-efficient evaluation of adaptation algorithms for DASH with SVC: dataset, throughput generation and stream simulator

Bitrate adaptation algorithms have received considerable attention recently. In order to evaluate these algorithms objectively, multiple DASH datasets have been proposed. However, only few of them are compatible to SVC-based adaptation algorithms. Apart from the dataset, to fully implement and evaluate an adaptation algorithm, many time-consuming steps are required such as MPD parser design, adaptation logic design and network environment setup. In this paper, a dash simulator which assesses the performance of SVC-based adaptation algorithms without the requirement of any additional implementation steps is proposed. Also, an SVC dataset that includes both CBR and VBR encoded videos is designed. Demonstration is performed as evaluation of an SVC-based adaptation algorithm under several throughput scenarios using the designed dataset. Results show that the proposed system considerably reduces time requirement compared to real-time assessment. Dataset, throughput generation tool and simulator are all publicly available so that the researchers can test their implementation and compare with the results presented in this paper.

Unsupervised noise cancellation for vibration signals: part I—evaluation of adaptive algorithms

Vibration analysis of machines gains much in efficiency if periodic vibrations can be separated out from non-deterministic ones. The first part of this paper reviews the existing adaptive algorithms that may be used to achieve this goal. The presentation is carried out from the viewpoint of prediction theory and gives a more solid theoretical basis to a number of recommendations for setting the algorithm parameters, as well as speeding up the computation by fast convolution using FFT processing. The application of Self-Adaptive Noise Cancellation is then illustrated on simulated and actual vibration signals. This first part is an introduction to part II of the same topic where a new method is proposed.