Multi-step network traffic prediction using echo state network with a selective error compensation strategy

Communication networks grow exponentially in this globalization era; thus, the network traffic modelling and prediction plays a crucial role in network management and security warning. Solely, the multi-step network traffic prediction may involve greater errors hence worsening prediction performance. To overcome this problem, an optimized echo state network model with selective error compensation is proposed. In the optimized echo state network-based multi-step prediction model, an improved fruit–fly optimization algorithm based on cloud model (named LVCMFOA) is used to select optimum values of four key parameters of the model. The proposed LVCMFOA algorithm uses the levy-flight function to redefine the generation of the fruit–fly population, which can randomly change the search radius and help getting out of a possible local optimal solution and prevent local optimum. To reduce the calculation time but improve the prediction accuracy simultaneously, a sophisticated selective error compensation strategy employing the variable sliding window technology is proposed so as to avoid the error accumulation problem in the multi-step prediction. The effectiveness of the proposed method is verified by applying it to Henon mapping chaotic series, Mackey–Glass chaotic series and two public network traffic data sets all known in the literature.

Teledentistry: Limitation and Challenges

Dentistry is the top listed most risky jobs in this pandemic Covid 19 situation, as dentist contain close face-to-face contact with the patients which increase the potential transmission of the (SARS)-CoV-2 virus from human to human through direct contact via oro-pharyngeal droplets and indirect contacts with fomites where dental professionals are highly vulnerable to get infected from the coronavirus. Thus, dental practice has mostly been suspended during this period. Teledentistry introduces a novel solution to resume dental practice by providing dental treatment, guidance, and education through teleconsultation, telediagnosis and telemonitoring through Information Technology (IT) instead of direct contact with patients. But there are some major challenges like lack of government initiatives, compensation strategy, legal issues, technical base, co-ordination among doctors, along with patients’ co-operation and limitations in telediagnosis. This technical note highlighted these limitations and challenges to make a concern to the dentist as at least teledentistry can accompaniment the existing threaten dental system during this living pandemic. Update Dent. Coll. j: 2021; 11(2): 1-3