| Abstract |
A digital library provides services that enable access to digital documents. At the same time the use of WWW allows users to access the documents from any node on the Internet. The fact that the paper is no longer used as the mean of storing the documents necessitates the device of a new procedure for the creation of annotations on the digital documents. This thesis deals with the creation of an annotation system of digital documents. Our goal is the management (creation, storage and retrieval) of annotations on digital documents as well as the process of retrieving a document based on the annotations. Internet is used in order to support networked scholarship communities and collaboration activities between groups of scientists located at different places making easier for the group members to have access to the annotations of the other members of the same group. ,This thesis deals with the creation of an annotation system of digital documents. Our goal is the management (creation, storage and retrieval) of annotations on digital documents as well as the process of retrieving a document based on the annotations. Internet is used in order to support networked scholarship communities and collaboration activities between groups of scientists located at different places making easier for the group members to have access to the annotations of the other members of the same group. Many annotation types are provided. There are two main categories of annotations: those concerning the annotations assigned on one document, and those that are related to more than one documents. The representation language TELOS is used in order to create the information model. For the annotation record fields the Dublin Core Metadata have been used. Also, by using the HTTP protocol, the easy use of our system over the Internet was made possible. The application was implemented in Java and also the Apache Web Server was used. Finally as the storage base for our application the Semantic Index System was used.
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Σύστημα Υπομνηματισμού Ηλεκτρονικών Εγγράφων στο Διαδίκτυο
