According to one embodiment, an information processing apparatus includes a memory unit which stores attribute information which indicates a characteristic quantity of each of components constituting a product, and parent-child relationship information which indicates a parent-child relationship between the components, a unit which calculates positions on a tree diagram of nodes corresponding to the components, a unit which calculates, for each of the components, a sum of the characteristic quantity of the component and the characteristic quantities of all child components belonging to the component, a unit which determines, for each of the nodes, a mode of a branch line which is to connect the node to a parent node thereof, based on the sum calculated for each of the components, and a unit which creates the tree diagram based on the calculated positions of the nodes and the determined mode of the branch line corresponding to each node.