Changing PreservationTopKEdgeSampling and fixing multi edges#22
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Added the function: HasEdge()
Changed the PreservationTopKEdgeSampling to sample a ratio of each node's neighborhood, selecting neighbors with higher degrees.
Changed the AddEdge() function to avoid multi edges in undirected graphs. When adding edges, it checks for the existence of the edge.
halehdizaji
changed the title
Separated TopKEdge sampling and TopRatioEdge sampling algorithms.
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I changed PreservationTopKEdgeSampling to sample a ratio of each node's neighborhood, selecting neighbors with higher degrees and added the HasEdge() function to graph.go. Also I changed the AddEdge() function to avoid multi edges in undirected graphs. When adding edges, it checks for the existence of the edge.