Abstract: An information processing apparatus includes: a factual attribute determining unit that determines a factual attribute that can be confirmed to be a fact with respect to a user based on user-provided data having been provided by the user oneself or history data of the user; an inferred attribute determining unit which determines an inferred attribute having been inferred with respect to the user based on user-related data including at least the factual attribute related to the user; and a credit score inferring unit that infers a credit score to be set to the user based on an attribute data group including the factual attribute and the inferred attribute related to the user.

Abstract: A cylindrical electrostatic oil cleaner is provided for removing dust from an insulating liquid. The cleaner is constructed of a cylindrical receptacle, a plurality of cylindrical positive and negative electrode plates and insulating dust collectors. The positive and negative electrode plates are coaxially arranged in an opposing relationship within the receptacle, so that an innermost compartment is defined in a form surrounded by the innermost electrode plate and outer compartments are defined between the respective electrode plates. The insulating dust collectors are arranged in the innermost and outer compartments, respectively. Each of the dust collectors comprises a plurality of cylindrical collector elements which individually form a corrugated zigzag peripheral wall.