| Carr, L. A., De Roure, D. C., Hall, W., Hill, G. J.: Implementing an Open Link Service for the World Wide Web. World Wide Web Journal, Vol.1, No. 2 (1998) |
....links that point to or from a document may be very costly if we do not introduce a type link in the object model. With offline links it will be the only feasible way of managing links for a specific document. In this case the XML Repository must be able to act as a link server as in Microcosm [CDDH98] We propose to extend the Ozone model with a new class of XML objects called XLINK to represent XML links. XLINK objects will have the same structure as the XMLcomplex objects. A more specific structure could be defined as required when XML links are fully standardised. In the same way a ....
Les A. Carr, David C. DeRoure, Hugh C. Davis, and Wendy Hal. Implementing an Open Link Service for the World Wide Web. World Wide Web Journal, 1(2), 1998.
....into the document, it is explicit and pre computed [1] Hypermedia research however suggests broader and more general link functionality. Namely n ary links (linking more than two locations) separation of link and content, and annotations, are mentioned and implemented in existing systems [16,21,7,5,2], as described in Section 2. A more elaborate link model would not only increase the capabilities of the Web as a hypermedia system, the usability of the Web would also be improved. The main improvements from a user point of view are: Educated choices Right now, users are left with little or ....
Leslie A. Carr, David C. De Roure, Hugh C. Davis, and Wendy Hall. Implementing an Open Link Service for the World Wide Web. World Wide Web Journal, 1(2):61--71, 1998.
....with successive portions of text to the link service. In such an implementation the limitations of generic links soon become apparent. Too many links overwhelm the reader and are a distraction. This problem has been addressed by work done for the Open Journals project by modifying the DLS [18]. The DLS has a concept of link priority schemes, different links can be given a priority by their author and the system can colour the links accordingly or even not display certain priority levels of links. Using pattern matching to create links in text is shown by the example of linking Board ....
Les A. Carr, David C. DeRoure, Hugh C. Davis, and Wendy Hall. Implementing an Open Link Service for the World Wide Web. World Wide Web Journal, 1(2), 1998.
....of peers. 2 Application Scenario We conceive an Open Hypermedia System called the Distributed Dynamic Link Service (DDLS) based on a peer to peer architecture. To the best of our knowledge, most implementations of the DLS maintain linkbases on the link server side; however, one of them proposes [6] the basic network model for a decentralised style of link service, where linkbases are located both at the client side and on the remote server. The DDLS is a complementary hypermedia service that clients inquire about a set of linkbases. By decentralizing both linkbases and link service ....
Carr, L. A., De Roure, D. C., Hall, W., Hill, G. J.: Implementing an Open Link Service for the World Wide Web. World Wide Web Journal, Vol.1, No. 2 (1998)
....has highlighted links to other documents or applications: these represent the main or sole possibilities for navigation. An example of a low constraint application would be the more query based interaction with a hypermedia system, as embodied by generic and computelink facilities (e.g. MICROCOSM [20, 21]) and where the user requests more information about a topic that may or may not be highlighted as a button (e.g. Tell me more about elephants ) We hypothesise that speech will become increasingly useful as the domain becomes less constrained. Thus, we intend eventually to study human ....
L. Carr, D. de Roure, H. Davis, and W. Hall. Implementing an open link service for the World Wide Web. World Wide Web Journal, 1(2):61--71, 1998.
....from other sources, or from a local cache of metadata. subscription accept inform contract refuse reason unsubscribe new delta request inform metadata Figure 8: Service Agent Transitions The architecture we have adopted in our implementation uses the notion of a hypermedia link service [3], which resolves the source anchor of a link to all the possible destinations by querying a link database ( linkbase ) to identify relevant links. Links may be regarded as metadata. In our implementation, the service agent requested metadata from a linkbase and stored the results in the local ....
L.A. Carr, D.C. De Roure, H.C. Davis, and W. Hall. Implementing an open link service for the world wide web. World Wide Web Journal, 1(2), 1998.
No context found.
Carr, L. A., De Roure, D. C., Davis, H. C. and Hall, W. (1998a). Implementing an Open Link Service for the World Wide Web. World Wide Web Journal, 1(2).
....and information discovery activities. KEYWORDS: Links, hypertext, open hypermedia, link services, autonomous user interface agents. INTRODUCTION The work described on the Distributed Link Service has been in progress since 1994 and has been previously described (most particularly in [5] and [2]) It is represented here in an updated form as an historical context for the implementation of the linking facilities together with the experiences and feedback that have shaped their development. In particular, we believe that it is this historical description which makes sense of the shift in ....
....objects by giving them a status independent of their containing documents, but the DLS now allows the user to directly manipulate links to control presentation and navigation features. The following section briefly describes some of these facilities; for greater detail the reader is referred to [2]. Link Inclusion: The control panel in figure 2 gives the user the ability to choose which of the server s installed linkbases are to be combined with requested documents, or to completely bypass the link compilation if a normal document viewing mode is required. The Open Journal Framework [4] ....
Carr, L., De Roure, D., Davis, H., and Hall, W., (1998) "Implementing an Open Link Service for the World Wide Web". World Wide Web. 1(2). Baltzer. Amsterdam: Netherlands (in press)
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