DiAGRA (Distributed AGgRegator of Annotation) is essentially a component that can be plugged in existing web-servers which provide information on real world items that belong to a fixed domain. Such web-sites generally offer two kinds of services: an item catalog and a item annotation list. The item catalog provides information about items, while the annotation list is a collection of the annotations posted by the users on various items. DiAGRA helps such cooperating web-sites to exchange annotations on items among themselves. This plug-in promotes heterogeneity and specifies the minimal set of requirements needed for interoperability among different servers. Hence it requires very little changes to be done on the web server part. This document describes the overall architecture of the system which deploys DiAGRA. It then describes the development, deployment and Administration details for successful implementation of such a plug-in. Though the DiAGRA component can be used by web servers of any domain, examples provided in this document refer to the specific domain of ski-mountaineering, where items correspond to ski-route and annotations are posted on ski-trips
The DiAGRA User Guide
Tiella, Roberto;
2004-01-01
Abstract
DiAGRA (Distributed AGgRegator of Annotation) is essentially a component that can be plugged in existing web-servers which provide information on real world items that belong to a fixed domain. Such web-sites generally offer two kinds of services: an item catalog and a item annotation list. The item catalog provides information about items, while the annotation list is a collection of the annotations posted by the users on various items. DiAGRA helps such cooperating web-sites to exchange annotations on items among themselves. This plug-in promotes heterogeneity and specifies the minimal set of requirements needed for interoperability among different servers. Hence it requires very little changes to be done on the web server part. This document describes the overall architecture of the system which deploys DiAGRA. It then describes the development, deployment and Administration details for successful implementation of such a plug-in. Though the DiAGRA component can be used by web servers of any domain, examples provided in this document refer to the specific domain of ski-mountaineering, where items correspond to ski-route and annotations are posted on ski-tripsI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
