An Information Network Overlay Architecture for the NSDL

TL;DR

This paper presents a new overlay architecture for the NSDL using a graph-based information network in Fedora, enabling resource contextualization and reuse for educational purposes.

Contribution

It introduces an innovative information network overlay architecture based on digital objects in Fedora for the NSDL.

Findings

Supports complex relationships among digital objects

Facilitates resource reuse and contextualization

Enhances the utility of NSDL for teaching and learning

Abstract

We describe the underlying data model and implementation of a new architecture for the National Science Digital Library (NSDL) by the Core Integration Team (CI). The architecture is based on the notion of an information network overlay. This network, implemented as a graph of digital objects in a Fedora repository, allows the representation of multiple information entities and their relationships. The architecture provides the framework for contextualization and reuse of resources, which we argue is essential for the utility of the NSDL as a tool for teaching and learning.