Node-marker - A mechanism for visualizing tree diagrams for cluster analysis
Original Publication Date: 2003-Mar-27
Included in the Prior Art Database: 2003-Mar-27
In cluster analysis, visualization of groupings in a tree diagram is critical for efficient data interpretation. The current solution is to apply visual treatments using user-adjustable threshold lines. It allows users to pick the same threshold value to visualize all sections of the tree diagram. However, in the real world situation, it cannot be assumed that the logical groupings for all different sections of the tree diagram are defined by the same threshold value. Especially, when the contents of some sections of the tree diagrams are relatively independent, the threshold value for making separations can be very different. This problem is even more evident when working with large tree diagrams and multi-level thresholds. The disclosed invention introduces a mechanism, node marker, to allow users to define the locations of the threshold for each section of the tree diagram for visualization. It provides complete flexibility for users to customize the visual of the tree diagram to precisely reflect their understanding of the grouping pattern for the complete tree diagram.