An information processing device includes an obtaining unit that obtains a plurality of contents to which labels indicating users' subjective evaluation of the contents are assigned as metadata, a selection unit that selects labels having a high reliability in regards to evaluation of the contents among the labels assigned to the plurality of contents obtained by the obtaining unit, a calculation unit that calculates a degree of similarity between the labels selected by the selection unit, a clustering unit that clusters the labels based on the degree of similarity calculated by the calculation unit, and a storage unit that stores a cluster obtained as a result of the clustering in the clustering unit, as one label.