DOI: 10.17587/prin.10.20-29

Ensuring the Availability of Services of the Corporate Intellectual Space by Controlling the Flow of Input Data

D. K. Levonevskiy, DLewonewski.8781@gmail.com, I. V. Vatamaniuk, vatamaniuk@iias.spb.su, D. A. Malov, malovdmitrij@gmail.com, St. Petersburg Institute for Informatics and Automation of the Russian Academy of Sciences, St. Petersburg, 199178, Russian Federation

Corresponding author: Levonevskiy Dmitriy K., Researcher, St. Petersburg Institute for Informatics and Automation of Russian Academy of Sciences, St. Petersburg, 199178, Russian Federation, E-mail: DLewonewski.8781@gmail.com

This paper considers providing availability of the corporate smart space services. Intended and unintended impacts on the smart space, such as conflicting user requests, exhaustion of resources, network attacks are considered availability threats. In order to estimate availability, it is proposed to measure parameters that determine quality of experience (QoE) and, in particular, quality of service (QoS). Such parameters include, for instance, average delays, average request processing times, denial rates. As an example, the paper discusses the process of communication between users and the information service of MINOS (Multimodal Information and Navigation Cloud System). Users can send requests to the service using various modalities such as speech, gestures, or control the service using their mobile devices or personal computers. In conditions of availability threats the service may be unable to allocate the required resource for all pending requests. In this case, it is necessary to find the optimal strategy of request processing that will maximize the QoS values. The optimality of strategies depends on a set of parameters (request and resource intensity, number of users, etc.). A mass queuing model was built to conduct the experiments. These experiments simulate different strategies of processing requests and methods of their filtering. The experiments show that the effect estimate has maximum values depending on the conditions of the applied system operating. Thereby, the task of determining the parameters of control strategies and filtering methods can be represented as an optimization task in a multidimensional space. The changing conditions of operating may be taken into account using adaptive approaches. The conducted research helps improving the quality of service and user experience in human-computer interaction in corporate smart spaces by means of providing the availability of the smart space services.

Keywords: smart spaces, multimodal interfaces, corporate information systems, information and navigation systems, cloud systems, computer security, availability

pp. 20–29

For citation:
Levonevskiy D. K., Vatamaniuk I. V., Malov D. A. Ensuring the Availability of Services of the Corporate Intellectual Space by Controlling the Flow of Input Data, Programmnaya Ingeneria, 2019, vol. 10, no. 1, pp. 20—29