By Adjusting Keyword Frequency and Separating Keyword into Different Layers to Improve Readability of KeyGraph in Decision Making

One drawback of KeyGraph is its poor readability. Providing qualified documents are expected helpful for KeyGraph to translate the documents an appropriate and easy read KeyGraph diagram. And further, to discover worthy chances for decision making. We proposed 2 preprocessing strategies for assuring appropriate quality of documents, especially for decision makers when they try to discover chances with KeyGraph. A case study of INSTANT MESSAGER is used to verify the validity and readability of the proposed strategies. The results shown that the proposed strategies are helpful for creating readability KeyGraph diagrams, and further to create clear scenarios for discovering chances.