The object class hierarchy design is considered due to a hy-pertext editor implementation. The following basic classes were selected: the editor's coordinate system, the memory manager, the text buffer executing basic editing operations, the inherited hypertext buffer, the edit window, the multi-window shell. Special hypertext editing features, the incremental hypertext creation support and fur...

Materialized complex object-oriented views are a promising technique for the integration of heterogeneous databases and the development of powerful data warehousing systems. Path query views are virtual classes formed from selection queries that specify a predicate upon the value of an aggregation hierarchy path. The primary diierence between previous work regarding OODB indexing and the eecien...

Category allows the abstraction of similar ideas into a single term for easy communication with another person. The similarities may be succinctly captured by a definition. In this paper, we are interested in the implementation of a program to acquire definitions, and use them to answer questions concerning these definitions. Several major components of a definition have been identified and imp...

We introduce a method for the construction of robust class hierarchies. The base of this construction is a rigorous deenition of inheritance. There are four possible inheritance relationships. At least two of them turned out to be important in practice. According to this for the rst time, conditions for the correct use of polymorphism are given. We show how inheritance hierarchies can be constr...

Abstract A large amount of research on Convolutional Neural Networks (CNN) has focused flat Classification in the multi-class domain. In real world, many problems are naturally expressed as hierarchical classification problems, which classes to be predicted organized a hierarchy classes. this paper, we propose new architecture for classification, introducing stack deep linear layers using cross...

Class hierarchies, though theoretically reusable, have generally not seen much practical reuse in applications, due in part to the inflexibility of the inheritance relationship. We present a technique, base class injection, that allows the creation of generative class hierarchies that may be adapted by adding new methods, data members, and ancestor classes without modification to the class libr...

In this paper, we argue that object-oriented models must be able to represent three kinds of taxonomic structures: static classes, dynamic classes, and role classes, that behave diierently with respect to object migration. If CAR is a static subclass of V EHICLE, then a vehicle that is not a car can never migrate to the CAR subclass. On the other hand, if EMPloyee is a dynamic subclass of PERSO...

We address the problem of integrating classes that are developed independently. We propose to factorise the intensional and extensional dimensions of classes and let them be organised in separate hierarchies. Class integration becomes the problem of integrating extent graphs, and to describe relations between the properties of the classes to be integrated. Our approach may be seen as extending ...