Information Technology Reference
In-Depth Information
Table 1. SWITCH LOR quality evaluation criteria
Criteria
Sub-criteria
Description
Flexible and modular system
Flexible and modular architecture that allows us to include various extensions in the
future
Possibility to use a LOR system as part of a federation
Basic operations accessible through well-defined, documented and designed API.
API: SOAP, REST or comparable. Basic operations: create new, edit existing,
search, query (needed for LMS-LOR integration)
API for storage engine
API for user access rights
User access rights can be assigned in program form
API for federation functions
APIs for metadata harvesting and federated search
Metadata search with hetero-
geneous schemas
Metadata search works with heterogeneous schemas across the LOR federation and
within a LOR. Applies metadata mapping or another best-effort approach
Architecture
Full text search: in federation, in objects of the most common formats, i.e. HTML,
XML, TXT, PDF, PPT, DOC, IMS-CP (2009), SCORM (2009)
Full-text search
A common single-server installation is able to reasonably deal with at least 50000
objects
Performance
Scalability
Possibility to support up to 1Mio objects, if necessary with clustering etc
Security
No intrinsic vulnerabilities. Bullet-proof access rights system
Interoperability
OAI-PMH (2009), federated search
Persistent links
Possibility to add a persistent link system like OAI, handle, URN
Internationalization
Possibility to support at least EN, IT, DE, FR
Minimal metadata schema
Possibility to define a minimal metadata schema with overall mandatory items
Possibility to pre-define common metadata schemas (IMS, MPEG7, DC etc.) that
can be used when necessary
Predefined sets of metadata
Customizable metadata
schema
Institutions, groups of interest or individuals can extend the minimal metadata
schema according to their needs
Metadata
Metadata mapping for
metadata
search
Possibility to map metadata items between schemas. For example, “contributor” of
mandatory schema to “author” of the IMS schema
Unicode support
Social tagging
Possibility to support dynamically defined social tags
Complete standard UI available that covers all important functions for administra-
tors and end-users
Complete standard UI
Extensible standard UI
The standard UI can be customized and extended
Multiple standard UIs can be configured to run on the same repository system
(needed to support multiple institutions)
Multiple standard UIs
Possibility to add special purpose UIs as needed, like stripped-down query interface,
spec. video portal, etc.
Custom UIs
Graphical user
Interface
AAI authentication
Possibility to add the AAI authentication system
Associate copyright license
Pre-defined copyright licenses (like Creative Commons) can be easily associated
Direct distribution
Objects can be directly accessed through a URL
Direct streaming
Video/audio objects can be directly streamed
Alternative protocols for
data upload
Access trough https, WebDAV, (s)ftp.
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