41,439 research outputs found
A Parsing Scheme for Finding the Design Pattern and Reducing the Development Cost of Reusable Object Oriented Software
Because of the importance of object oriented methodologies, the research in
developing new measure for object oriented system development is getting
increased focus. The most of the metrics need to find the interactions between
the objects and modules for developing necessary metric and an influential
software measure that is attracting the software developers, designers and
researchers. In this paper a new interactions are defined for object oriented
system. Using these interactions, a parser is developed to analyze the existing
architecture of the software. Within the design model, it is necessary for
design classes to collaborate with one another. However, collaboration should
be kept to an acceptable minimum i.e. better designing practice will introduce
low coupling. If a design model is highly coupled, the system is difficult to
implement, to test and to maintain overtime. In case of enhancing software, we
need to introduce or remove module and in that case coupling is the most
important factor to be considered because unnecessary coupling may make the
system unstable and may cause reduction in the system's performance. So
coupling is thought to be a desirable goal in software construction, leading to
better values for external software qualities such as maintainability,
reusability and so on. To test this hypothesis, a good measure of class
coupling is needed. In this paper, based on the developed tool called Design
Analyzer we propose a methodology to reuse an existing system with the
objective of enhancing an existing Object oriented system keeping the coupling
as low as possible.Comment: 15 page
An Infrastructure for the Dynamic Distribution of Web Applications and Services
This paper presents the design and implementation of an infrastructure that enables any Web application, regardless of its current state, to be stopped and uninstalled from a particular server, transferred to a new server, then installed, loaded, and resumed, with all these events occurring "on the fly" and totally transparent to clients. Such functionalities allow entire applications to fluidly move from server to server, reducing the overhead required to administer the system, and increasing its performance in a number of ways: (1) Dynamic replication of new instances of applications to several servers to raise throughput for scalability purposes, (2) Moving applications to servers to achieve load balancing or other resource management goals, (3) Caching entire applications on servers located closer to clients.National Science Foundation (9986397
Message-Passing Protocols for Real-World Parsing -- An Object-Oriented Model and its Preliminary Evaluation
We argue for a performance-based design of natural language grammars and
their associated parsers in order to meet the constraints imposed by real-world
NLP. Our approach incorporates declarative and procedural knowledge about
language and language use within an object-oriented specification framework. We
discuss several message-passing protocols for parsing and provide reasons for
sacrificing completeness of the parse in favor of efficiency based on a
preliminary empirical evaluation.Comment: 12 pages, uses epsfig.st
- …