Symbol network link prediction method and terminal device

The present invention is applicable to the field of social network analysis, and provides a symbol network link prediction method and a terminal device. The method comprises: obtaining a vertex pair of a known relationship and a vertex pair of an unknown relationship in a symbol network; calculating a neighbor set of the vertex, and according to the calculated neighbor set, calculating a same attribute set, an inverse attribute set, and a different attribute set; according to the calculated neighbor set, the same attribute set, the inverse attribute set, and the different attribute set, calculating the weight; according to the calculated neighbor set, calculating an i value, and further calculating an i-value sign, wherein the i value represents the probability that the different attributeis converted to the same attribute or the inverse attribute; according to the calculated neighbor set, the same attribute set, the inverse attribute set, the different attribute set, the i value andthe i-value sign, calculat