Читать книгу Intelligent Data Analytics for Terror Threat Prediction - Группа авторов - Страница 35

Monitor observation means monitoring the network by inserting monitor or sensor nodes in it which works as an observer in network [36]. These sensor nodes gather information about states of nodes and pass this to administrator. The administrator will maintain all gathered data about each node state in a database. But there is chance of missing information in monitor observation as sensor nodes are inserted in a few places of network. Also, there may be a loss of information about some nodes where sensor nodes are not available. Due to unavailability of information of some nodes in network it reduces the accuracy of system, as system is based on number of nodes. If number of nodes increases then accuracy may increase but reduces performance of system due heavy load on network.

These are three types of network observations which help to understand states of nodes and network structure. Network topology and network observation both are used to understand the structure of network. Network structure is one of the best factors that are considered in source identification. Other factors also considered are diffusion model which is mandatory in source identification as discussed in Section 1.5.2.