Thanks a lot for your answer, I so much appreciate it.
Actually I wanted to know what other algorithms exist for Semantic Graphs (e.g. DBpedia in my case) rather than using spreading activation.
My question would be better this way: I want to traverse the graph (DBpedia) but not to apply spreading activation on the nodes, I wanted to know what other algorithms are also good/efficient to use instead of using spreading activation, like machine learning algorithms or genetic algorithms or any other algorithms.