3 research outputs found
Content Request Markup Language (CRML): A Distributed Framework for XML-Based Content Publishing
No full textOntolog铆as para servicios web sem谩nticos de informaci贸n de tr谩fico: descripci贸n y herramientas de explotaci贸n.
Get PDFRESUMEN
Esta tesis forma parte de los denominados Sistemas Inteligentes de Tr谩fico (ITS) los
cuales se basan en la aplicaci贸n de tecnolog铆as de Telecomunicaciones e Inform谩tica
(Telem谩tica) a los sistemas de ayuda al tr谩fico vial, perteneciendo al dominio Servicios
de Informaci贸n al Viajero (TIS).
Como se pone de manifiesto, existen algunos problemas derivados del uso de este tipo
de sistemas, desde el punto de vista del usuario, que dan lugar a que 茅ste sea incapaz de
obtener la informaci贸n clara y precisa correspondiente a sus requerimientos.
Los principales problemas identificados han sido la falta de un vocabulario com煤n de
t茅rminos que haga uso de una sem谩ntica bien definida que permita obtener el
significado (incluso aqu茅l no expl铆cito) de cada concepto de tr谩fico vial, as铆 como la
recuperaci贸n de informaci贸n desde distintas fuentes heterog茅neas, de una forma
intuitiva y sencilla.
Varios aspectos describen la problem谩tica actual relativos al acceso y distribuci贸n de la
informaci贸n:
1. Un gran volumen de informaci贸n de tr谩fico se distribuye entre varios sitios Web.
El principal problema para un usuario que necesita informaci贸n de este tipo es
encontrar estos sitios Web y adem谩s tratar con los diferentes accesos a 茅sta, as铆
como sus diferentes formas de presentaci贸n.
2. Por otra parte, un usuario puede necesitar informaci贸n de diferente naturaleza o
tipo, y por lo tanto el almacenaje de toda esta informaci贸n en un solo sitio Web
no es viable a nivel de costes de almacenamiento ni incluso a nivel de
mantenimiento.
3. El tratamiento de la informaci贸n no permite realizar inferencias sobre ella de
manera que pueda ser obtenido como resultado, informaci贸n que a priori no
estuviera expl铆citamente detallada.
Tras el descubrimiento de la problem谩tica existente y la identificaci贸n de elementos que
pudieran solventar esta situaci贸n, el presente trabajo se centra en el estudio de los
sistemas ITS orientados a facilitar informaci贸n de tr谩fico al usuario, y que a su vez
permitan la gesti贸n de la informaci贸n, su tratamiento e intercambio, de manera eficaz
entre los diferentes elementos que componen la arquitectura de servicios de informaci贸n
de tr谩fico, como los usuarios, aplicaciones, y proveedores de la informaci贸n.
Para la consecuci贸n de los objetivos marcados han sido desarrollados diversos
elementos como parte integrante de una arquitectura, que supusieron determinados
aportes y/o resultados:
1. Construcci贸n de una infraestructura ontol贸gica cuyo dominio queda enmarcado
en la informaci贸n sobre tr谩fico vial.
2. Se ha expuesto un marco de trabajo para la conversi贸n de portales Web
convencionales de informaci贸n en Servicios Web Sem谩nticos (SWS).
3. Extensi贸n a las metodolog铆as de construcci贸n de ontolog铆as, previamente
existentes, para plantear el proceso a seguir en la obtenci贸n de un modelo
sem谩ntico formal a partir de un modelo de Entidad-Relaci贸n (ER).
4. Se ha dise帽ado, implementado y evaluado, un algoritmo de emparejamiento de
SWS, que aprovecha al m谩ximo las capacidades proporcionadas por las
ontolog铆as de descripci贸n de servicios y que constituye una mejora de los ya
existentes. Inclusi贸n del grado fraternal o de hermanos y otra serie de
modificaciones.
5. Se han mostrado una serie de propuestas que permiten crear y manejar Servicios
Web Sem谩nticos de informaci贸n de tr谩fico vial: nuevo par谩metro no funcional
(valor a帽adido), ontolog铆a de categorizaci贸n de servicios de tr谩fico y elecci贸n de
factores de medida en la QoS.
Finalmente las propuestas han sido validadas a partir del desarrollo de un prototipo
software basado en la arquitectura de integraci贸n de SWS de informaci贸n sobre tr谩fico
vial, que ha permitido el ensamblaje de todos los elementos (ontolog铆as de tr谩fico,
algoritmo de emparejamiento, servicios de informaci贸n de tr谩fico), obtenidos como
resultado en cada una de las etapas de esta investigaci贸n.
__________________________________________________________________________________________________This thesis forms part of the common Intelligent Transportation Systems which in turn
are based on the application of telecommunication and Informatics (Telematics) to
traffic management which belongs to the domain of Traveller Information..
The principle identified problems are the lack of a common vocabulary of elements
which use a well defined semantic description which permits obtaining the meaning
(including the non-explicit) of each concept of rural traffic as well as obtaining
information from different heterogeneous sources in an intuitive and simple way.
Different aspects describe the actual problem related to the access and distribution of
information:
1. High volume of traffic information is distributed over different web sites. The
main problem for a user who needs such information is to find such webs and
handle the different ways of access and presentation
2. On the other hand, the users need information of a different nature or type, and
the storage of such information on a simple site would be too costly as well for
maintenance.
3. It is no possible to obtain any information if this information is not explicit
before,
After defining the existing problems and identifying the elements which could solve this
situation, the present work focuses on those ITS-systems which provide traffic
information to the user, its handling and exchange, in an efficient way between the
elements which compose the architecture of traffic information systems, such as users
applications and information providers.
Different elements have been developed as an integral part of an architecture:
1. Construction of an ontological infrastructure which domain is covered by road
traffic information,
2. A framework was defined for the conversion of conventional web portals to
semantic web services (SWS),
3. Extension of the existing methodology for the construction of ontologies based
on ER model,
4. A SWS matching algorithm was designed, implemented and evaluated which
make maximal use of the capabilities of the ontologies of the service description,
which constitute an improvement of the existing ones.
5. A number of proposals were demonstrated which permits creation and handling
of Semantic web services of road traffic information
Space In The Ambience: : Is Ambient Music Socially Relevant?
Get PDFToday, nearly every space that can be filled with digital content is filled with digital content. Even contemplative personal reflective time can now be digitally mediated. This is a different world from the one where the idea of ambient music first emerged. In the 1970s and early 1980s, our ambient environment featured no augmented reality overlays, fewer opportunities for distracted attention (unless they were deliberately sought out), and a vastly reduced need for personal multitasking. Then, fewer situations required a high degree of context switching to address incoming information from sources other than those which we have immersed ourselves in out of choice, and ambient music - as an idea, was born within those environmental and cognitive conditions. Now, new definitions of embodied cognition have demonstrated that our ambient environment is crucial for understanding the world through non-mediated forms of information, yet the idea initially behind much historical ambient music was one of inhabiting a space in our perception through which the un-mediated could be addressed. By defining historical ambient music as an information overlay itself where a surrounding environment is displaced temporarily and overlaid with new information (as with an augmented reality), an alternative trajectory of development can be mapped out. Why do we now create specific environments for ambient music listening, rather than allowing ambient music itself the chance to occupy those situations? Has the embodiment brought about by increasing interaction in public ambient art, through technological processes, changed how we respond to artistic material embedded in our own day-to-day ambience? This chapter performs an experimental re-assembly of the situated components of ambient music, originally inherited from a pre-internet, pre-information society. It provides an assessment of the relevance of ambient as an idea in a contemporary media-driven world where space in the ambience is already at a premium
