1. Accuracy of spatial databases
Methods and Techniques for error handling and uncertainty error handling in geographic information data, including:
Uncertainty error model;
Error Tracking and coding;
Calculation and Expression of errors in GIS applications;
Data Accuracy Evaluation;
Research on data quality, metadata, and data standards.
2. Study on Spatial Relational Language
Based on the standardized form of geospatial concepts, using natural language and mathematical methods,
Theory of spatial relationship expression;
Computing Model for locating expressions;
Acquisition and Expression of spatial concepts;
Topology relationship definition;
Visualization of spatial information;
GIS user interface.
3. Multiple Expressions of Spatial Data
Data of different versions and corresponding topological relationships organized for efficient data extraction, and
Multiple Expressions of Spatial Data;
Map Drawing Rules that meet data consistency and accuracy requirements;
Data Models, links, multiple organizations, and scales.
4 study on the use and value of geographic information
Understanding of factors and processes that play a key role in GIS acquisition, implementation and use;
GIS propagation model establishment method;
Determine the economic value of GIS.
5 research on the structure system of massive space Databases
Implementation methods for data models, structures, algorithms, user interfaces, and other issues in massive databases;
Space substitute mathematics;
Logic-based computer Query Language;
The specific content and organization of metadata;
Data Compression and encryption methods.
6. Spatial Decision Support System
The role of GIS and Its Related Disciplines in decision-making;
Spatial Decision Support Methods for Solving regional disaster problems;
Spatial Decision Support System models and data;
Spatial Decision Support System technology and implementation;
Research on user requirements and organization issues.
7. Research on Visualization of Spatial Information
Research on the Management and visual expression of data quality;
Error Model and data quality indicators;
Data quality management in databases;
Visualization tools that make internal expressions and Map Display easier;
Evaluate user requirements of data quality information.
8 standardization of map plotting
Study the corresponding methods and guidelines to improve the consistency of spatial data,
And the efficiency and accuracy of spatial data in expression and spatial analysis;
Research on the standardization of map plotting language;
Standardized design and evaluation system;
Embedding knowledge reasoning into a data model.
9 Research on geographic information data sharing
From geographic information and technology sharing to space data sharing;
Theoretical Research on space data sharing;
Space Data Sharing places;
The Processing Method of spatial data sharing.
10 spatial-temporal relationship in GIS
Studies on the space, time, and objects associated with changes in a geographical space;
Division of different time concepts, such as discrete, continuous, and monotonous;
In specific applications, the choice of the Cartesian coordinates and Euclidean coordinates;
Embody and formalize human cognitive processes on time and space;
The simulated computing mode of spatial phenomena.
11 integration of remote sensing and GIS
It solves the key problems of remote sensing and GIS integration, including:
Data structure and access problems;
Data processing process;
Error analysis;
Organization issues.
12 GIS User Interface Design and Implementation of Human-Computer Interaction user interface; research on interaction between people and computers in GIS environment; influence of different backgrounds, languages, and cultures on Human-Computer Interaction guidelines and methods for GIS software user interface design. 13 GIS and spatial analysis: spatial statistical analysis of spatial statistics geographical data; Role of geographic boundaries and map scales in spatial data systems; sampling and interpolation of spatial data; the relationship between GIS data structures and spatial statistical computing. 14 studies on the role of GIS in global changes comprehensively and quantitatively understand the role of GIS applications in global changes; starts from a small scale study and establishes the theoretical basis and computing structure; global data quality assessment. 15 laws, information policies, and spatial database relationships research the applicability of GIS data; a scientific understanding of laws and policies in the spatial database environment; and how to improve the content and quality of GIS laws; the role of spatial databases in public policy and legal construction the usefulness of GIS in public policy and legal aspects. 16 provide development and evaluation tools to form a space decision-making system through collaboration to solve complex spatial problems; establish knowledge acquisition methods; Establish assessment schemes; and determine the contact methods of collaborators; conflict resolution in an interactive environment. 17. In the social background, how should we study population management and control in GIS, determine the scope of population affected by conflicts, and exploit and use natural resources concerned by political economy. 18 Research on the interoperability of GIS open and distributed storage GIS structure; methods for obtaining semantic characteristics of geographic data; research on data abstraction and processing models; and Granularity of geospatial data ). 19 The standardization mode of the geographical world studies the Standardized Expression of the geographical world. Spatial Data structures are used to express the basic descriptive elements of the real world. GIS users' intuitive views on the geographical world.
