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Vol.10 No.2
June 15, 2011
Research Articles:
Enterprise Frameworks for Data Intensive Web
Applications: an End-User Development Model Based Approach
(pp087-108)
Franca Garzotto
This paper investigates enterprise frameworks in the context of data
intensive web applications, and proposes an approach that integrates the
paradigms of End User Development and Model Based development. An
enterprise framework denotes a reusable, semi-complete application
“skeleton” that can be easily adapted to produce custom software
products in a specific business sector. Traditionally, it is conceived
as a tool for expert software developers. In contrast, we propose to
regard enterprise frameworks as tools that enable domain experts to
develop for data intensive web applications in a given field without the
need of technological training or support by expert programmers. We
propose the adoption of a model-driven process for framework-enabled
development, based on conceptual models that are appropriate for the
framework domain and domain experts can understand, adapt, and
customize. We discuss requirements for and benefits of combining the two
paradigms, and exemplify our approach presenting CHEF, an enterprise
framework for data-intensive multichannel web applications in the domain
of cultural heritage and cultural tourism. CHEF has been developed in
the context of a wide international initiative called MEDINA and has
been intensively evaluated in this and other projects.
Model-Driven Web Development for Multiple Platforms
(pp109-152)
Ali Fatolahi, Stephane S. Some, and Timothy C. Lethbridge
Mode-driven development of web applications relies on the definition of
the mappings that transform high-level models to models of specific web
platforms. Thus, the transformations are often platform-specific and may
not be used for more than one platform. The current web, however, is a
heterogeneous network of different technologies and it often happens
that one specific application needs to run on several platforms. Also,
many patterns of web applications could be re-used in several projects
that are performed using different technological configurations. In this
paper, we describe our approach for targeting multiple platforms by
defining an intermediate abstract web platform. This is a
technology-independent model that carries common properties of web
applications. Thus, transformations will become two-step
transformations; the first step targets the abstract web platform and
hence, is re-usable. The second step maps the abstract web model to
specific web platforms; this is shorter than conventional
platform-specific transformations.
Automatic maintenance of Web directories
(pp153-173)
Carlos Hurtado and Marcelo Mendoza
Web directories allow Web users to browse a hierarchy of categories,
under which different types of resources are classified. We study the
problem of maintaining a Web directory, that is, the problem of
continually discovering and ranking resources that are relevant to the
categories of the directory. We propose an unsupervised computational
method that conducts the maintenance of the directory by analyses of
user browsing data. The method is based on the extraction and
classification of user sessions (sequences of resources selected by
users) into the categories of the directory. In addition, we show that
the directory maintenance method can be slightly modified to find
queries that are useful to find relevant resources allowing users to
switch from directory browsing to query formulation. Experimental
results allow for affirmation that the proposed methods are effective,
that they attain identification of new pages in each category and also
recommend related queries with high precision, without needing labeled
data to conduct traditional web page and query classification tasks.
Book Review:
On Handbook of Research on Web 2.0, 3.0 and X.0: Technologies,
Business, and Soclial Applications, edited by San Murugesan
(pp174-174)
Bebo White
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