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A Method for Evaluating the Spatial-Temporal Autocorrelation of Geographical Events

An autocorrelation and event technology, applied in geographic information databases, special data processing applications, structured data retrieval, etc., can solve problems such as unsuitable spatiotemporal autocorrelation 3D visualization

Active Publication Date: 2019-12-17
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this visualization method is not suitable for 3D visualization of spatiotemporal autocorrelation

Method used

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  • A Method for Evaluating the Spatial-Temporal Autocorrelation of Geographical Events
  • A Method for Evaluating the Spatial-Temporal Autocorrelation of Geographical Events
  • A Method for Evaluating the Spatial-Temporal Autocorrelation of Geographical Events

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Embodiment Construction

[0028] In order to make the purpose, technical solution and advantages of the present invention clearer, the embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0029] Please refer to figure 1 with figure 2 , an embodiment of the present invention provides a method for evaluating spatiotemporal autocorrelation of geographic events, comprising the following steps:

[0030] (1) Obtain the location information and occurrence time of geographic events;

[0031] (2) Time is layered, and geographical events are aggregated in different time layers according to location information and time stamps; time is divided into n time periods, and n time periods correspond to n time layers, and each time layer is composed of Consisting of m areas, each layer has the same area structure, then n time layers have n×m areas, all of which are polygons, and each area is composed of a state, county, census area or census area.

[0...

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Abstract

The invention discloses a geographical event space-time autocorrelation evaluation method. The geographical event space-time autocorrelation evaluation method comprises the following steps of (1) acquiring the location information and occurrence time of geographical events; (2) layering the time; (3) calculating the frequency; (4) calculating space-time weight of all the geographical events; (5) calculating a global space-time Moran index and a local space-time association indicator, and evaluating global space-time association and local space-time association of all the geographical events. The invention provides a space-time Moran cluster diagram for three-dimensional visualization to help people visually observe the association among space-time events.

Description

technical field [0001] The invention relates to spatial statistics and spatio-temporal data mining, in particular to a method for evaluating spatio-temporal autocorrelation of geographical events. Background technique [0002] With the increasing availability and accessibility of data on the Internet and mobile devices, a large number of new data representing various aspects of life in a given period of time in a given area are continuously generated and available in reality. Events occurring over time associated with a definable area are defined as geographic events. These events not only form spatial patterns over time periods, but also spatial processes that represent how events develop over time. In today's big data era, geographic event data often comes from a wide variety of sources, requiring new ways to analyze and understand them. [0003] According to the first law of geography, there is a certain degree of spatial correlation between geographical events. In ord...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F16/29
CPCG06F16/29
Inventor 万波龚君芳李圣文
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)