... terms, or to browse through the search results to find the per-son they are seeking. Besides, an ever-increasing number of question answering and information extraction systems are coming to rely ... exam-ple, as shown in Figure 1, with the background knowledge that both Learning and Graphical models are the topics related to Machine learning, while Machine learning is the sub domain of Computer ... equals to quantifying the similar-ity between nodes in a weighted graph. To simpl-ify the description, we assign each node in se-mantic-graph an integer index from 1 to |V| and use this index to...