20. The EPG generating apparatus according to claim 12 , wherein, the semantic similarity degree corresponding to each edge of the edge set must be greater than or equal to a similarity threshold.
12. The EPG generating apparatus according to claim 11 , wherein the processor constructs a node set according to the inputting keyword group and the program name keyword group, constructs an edge set according to the node set and the semantic similarity degree matrix, and constructs the undirected graph according to the node set and the edge set.