document: Multispace information visualization framework for the intercomparison of data sets retrieved from web services We introduce a new visualization framework for the intercomparison of more than one data set retrieved from Web services . In our framework , we use more than one visualization space simultaneously , each of which visualizes a single data set retrieved from the Web service . For this purpose , we provide a new 3D component for accessing Web services , and provide a 3D space component , in which data set retrieved from the Web service is visualized . Moreover , our framework provides users with various operations applicable to these space components , i.e. , union , intersection , set-difference , cross-product , selection , projection , and joins .
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