Scheme for automatic data conversion definition generation...

Computer graphics processing and selective visual display system – Computer graphics processing – Three-dimension

Reexamination Certificate

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Details

C345S440000

Reexamination Certificate

active

06191792

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a scheme for automatically generating graphic expressions according to data feature such as a decision tree for classifying target attributes or a statistical feature of data in a visual multidimensional data analysis tool which is to be used in applying a sophisticated data analysis with respect to data stored in database or files, and more particularly, to a scheme for automatically generating data conversion definition according to the data feature which is to be used in a data conversion display device for converting data stored in database or files into graphic data according to the data conversion definition and displaying converted graphic data.
2. Description of the Background Art
In the conventional visual multidimensional data analysis tool, visualization conditions are usually defined by a user, and there is no known scheme for assisting this definition generation by the user according to a decision tree for classifying target attributes or statistical feature of data.
Thus in the conventional visual multidimensional data analysis tool, visualization conditions have to be defined by the user so that many trials and errors are required at a time of data analysis, and there has been a problem that it has been impossible to carry out the data analysis quickly.
Also, in the conventional visual multidimensional data analysis tool, visualization target attributes are to be selected and obtained by the user by repeating attribute selection operations.
In this regard, in the conventional visual multidimensional data analysis tool, there is no known scheme for automatically selecting target attributes by assigning priority orders among a plurality of attributes according to a correlation coefficient matrix, and it has been necessary for the user to select the visualization target attributes so that the user is required to repeat operations for selecting attributes that are effective for the data analysis and therefore there has been a problem that it has been impossible to carry out the data analysis quickly.
SUMMARY OF THE INVENTION
It is therefore an object of the present invention to provide a scheme for automatic data conversion definition generation based on data feature such as a decision tree or a statistical feature, so as to enable a quick data analysis in a visual multidimensional data analysis tool.
It is another object of the present invention to provide a scheme for automatic data conversion definition generation, which is capable of assigning priority orders among a plurality of attributes according to a correlation coefficient matrix and selecting visualization target attributes from data and a number of attributes to be selected entered by the user at a time of large quantity multidimensional data analysis.
According to one aspect of the present invention there is provided an automatic definition generation device for automatically generating a data conversion definition to be used in an apparatus for converting data stored in database or files into graphic data according to the data conversion definition and displaying the graphic data, the device comprising: a feature extraction unit for extracting a data feature of the data from a scheme and contents of the database or files; and a definition generation unit for automatically generating the data conversion definition according to the data feature extracted by the feature extraction unit, the data conversion definition being formed by an attribute mapping definition defining combinations of data attributes and graphic data parameters and a data conversion method definition defining a method for converting a value of each data attribute into a value of a corresponding graphic data parameter.
According to another aspect of the present invention there is provided an automatic definition generation method for automatically generating a data conversion definition to be used in an apparatus for converting data stored in database or files into graphic data according to the data conversion definition and displaying the graphic data, the method comprising the steps of: extracting a data feature of the data from a scheme and contents of the database or files; and automatically generating the data conversion definition according to the data feature extracted by the extracting step, the data conversion definition being formed by an attribute mapping definition defining combinations of data attributes and graphic data parameters and a data conversion method definition defining a method for converting a value of each data attribute into a value of a corresponding graphic data parameter.
According to another aspect of the present invention there is provided an article of manufacture, comprising: a computer usable medium having computer readable program code means embodied therein for causing a computer to function as an automatic definition generation system for automatically generating a data conversion definition to be used in an apparatus for converting data stored in database or files into graphic data according to the data conversion definition and displaying the graphic data, the computer readable program code means includes: first computer readable program code means for causing said computer to extract a data feature of the data from a scheme and contents of the database or files; and second computer readable program code means for causing said computer to automatically generate the data conversion definition according to the data feature extracted by the first computer readable program code means, the data conversion definition being formed by an attribute mapping definition defining combinations of data attributes and graphic data parameters and a data conversion method definition defining a method for converting a value of each data attribute into a value of a corresponding graphic data parameter.
Other features and advantages of the present invention will become apparent from the following description taken in conjunction with the accompanying drawings.


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