There is provided a neural network control apparatus. The apparatus comprises a memory; and a processor configured to: classify a target node into a head group or a tail group based on a reference feature value for each class included in a graph structure; determine, if the target node is classified into the head group, a class of the target node by using a first neural network trained to derive embeddings based on a node with a class corresponding to the head group among nodes included in the graph structure; and determine, if the target node is classified into the tail group, a class of the target node by using a second neural network trained to derive embeddings based on a node with a class corresponding to the tail group among nodes included in the graph structure.