在路径最大长度给定的前提下。在节点网络中找从各个节点出发的最短路径。-find several routes in the network and the total distance of these route is minimal and dont exceed the maximal distance of the route.

分析网络用户的行为，根据敏感词、高频词、发现网络用户的违规行为、跟踪用户行为-Analysis of the behavior of network users, according to the sensitive, high-frequency words, the discovery of the violation of network users, to track user behavior