Decimation of data from a fixed length queue retaining a representative sample of the old data. The user-centered information search may include generating an object as a classification unit of an information search structure and a property of the object, generating a class and determining a property of the class using the object; and detecting a search result corresponding to an information request from a user using at least one of the object, property, and class. The first device identification information corresponds to a first IO device driver in the data processing system. The second material, is held by the first member to the integrated circuit structure.