Design And Implementation Of Spatiotemporal Relevant Information System

In the information age,people are inseparable from the search,analysis,synthesis of the information and knowledge acquisition.Information object generally refers to anything that exists in the form of information,which is perceivable or imaginable,such as characters,events,and so on.At present,the content of network information is complex and has reached sea quantification.but the development and evolution of information objects are inconsistent in time and space,isolated and unrelated among information objects,and lack of intuitive and holistic presentation.In order to solve the problem of inconsistent time units of information objects,the conversion model of the temporal cues is established.and the time domain information conversion algorithm is designed to unify the time of key nodes in the development of information object.Aiming at the problem that the spatial background of information objects is not uniform,a spatial vector model of geographic evolution is established,and corresponding algorithms are designed to realize the evolution of spatial geography with time.Because of the isolation and independence of the information objects,the association model of multi-information object is established,and corresponding deep mining association algorithm is designed to establish the memory association between information objects.Finally,due to the lack of visual display of the development and evolution of information objects,a visual evolution model of information objects is established to realize the visualization system based on time line.The main work of this thesis includes the following aspects.1.Constructing a mutual transformation model of various dating methods to achieve the normalization of temporal semantic expression.2.Establish an interactive system of information retrieval to extract the geographic information of historical dynasties,including the vectorization of administrative divisions and the recognition and extraction of geographic name information.3.Design and establish a spatiotemporal database based on geographic information of dynasty and time series,and form time-based digital storage of geographic information,which lays a foundation for time-space information query.4.The information application platform based on spatiotemporal database is designed and implemented to realize the analysis and mining of spatiotemporal data,the trajectory of characters,the evolution of events and the visualization of associations,etc.The innovations of this research mainly include:(1)An interactive vectorization method for geographic images is proposed and implemented,and an application platform is developed.(2)Design and implement a mutual conversion model of various dating methods.(3)Propose and implement a visualization method of event evolution and association based on spatiotemporal background.