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Concerning the problems of the comparative translation is not accurate in machine translation and the useful information is unable to match in information retrieval, a liheci word sense disambiguation method is adopted and a classifier model is established using Support Vector Machines(SVM). To improve the accuracy of the liheci word sense disambiguation, it extracts not only local words(LW), local...
With the development of mobile internet, wireless communications via mobile devices in the form of Delay Tolerant Networks (DTNs), becomes a hot research topic. One critical issue in the DTNs with social characteristics is that there could exist selfish nodes which are unwilling to forward messages from strangers and malicious nodes which intentionally impair normal communication. Although there are...
With the development of mobile internet, wireless communications via mobile devices, which is typically in the form of Delay Tolerant Networks (DTNs), becomes a hot research topic. One critical issue in the development of DTNs is the routing. Although there are a lot research works addressing routing issues in DTNs, they handle routing problem from only one or two aspects, which cannot produce an...
Delay tolerant networks (DTNs) use a store-carry-forward communication model relying on the mobility of nodes because a persistent end-to-end path from source to destination generally does not exist. Epidemic routing is a typical protocol in which data can be replicated along multiple opportunistic paths. With the advent of network coding, it is intuitive that data can not only be replicated, but...
Delay tolerant networks (DTNs) use a store-carry-forward communication model relying on the mobility of nodes because a persistent end-to-end path from source to destination generally does not exist. Being different from ad hoc, recent research in DTN is still in its infancy which mainly uses analytical model and simulation to analyze network protocols. As we all know, testbed is an important research...
Delay tolerant network (DTN) is a network which implies asynchronous communication and does not require an end-to-end path at any point in time. Its main characteristic is the links between nodes are volatile and may break down for a long time at any time, so it can't be assumed that a path exists between the source node and the destination node. The current studies on DTN mainly use theoretical analysis,...
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