1. An information processing apparatus, comprising: circuitry configured to: analyze event information related to an event in which a person participates; analyze a person image group including a plurality of person images including the person and store the person image group in a database; estimate a profile, comprising one or more profile items, of the person participating in the event based on a result obtained by analyzing the person image group and a result obtained by analyzing the event information and store the estimated profile; determine, for each of the one or more profile items, a certainty factor; and control display forms of the one of more profile items being displayed, wherein controlling the display forms include changing one or more of: size, color or transparency of characters indicating values of the one or more profile items according to levels of certainty factors associated with the one or more profile items.