Community detection and key nodes of complex technology exchange network

The complex technology exchange network is composed of the vendor, the vendee and the transaction characteristics. In this construction, vendee and vendor were painted as vertices and the trades were painted as the lines, which connected the points together. The paper is pointed at analysising the result by using the igraph package of R. In accordance with different algorithms, we picked the best suitable one at last to detect the regular pattern in it about the important vertices.