INFORMATION PROCESSING DEVICE, INFORMATION PROCESSING SERVER, INFORMATION PROCESSING METHOD, AND NON-TRANSITORY COMPUTER READABLE STORAGE MEDIUM

To achieve both protection of privacy and high inference accuracy.Provided is an information processing apparatus includes a learning unit that clusters hierarchical data on the basis of a plurality of inference models distributed from an information processing server, and performs learning using the inference model corresponding to every cluster, and a communication unit that transmits an intermediate result generated for every cluster in the learning by the learning unit to the information processing server. The hierarchical data includes information for specifying a main element and a log collected or generated in association with the main element.