Information Technology Reference
In-Depth Information
The role of each of these tools is defined as follows:
- DOC tool: extracts from existing documentation the semantics of elements
- FUNC tool: parses the code of each single process in order to identify elements,
verify existence of RepInfo (if RepInfo missing, a warning is generated, see demo
below), and provides PDI for the process according to the PATCH ontology
template
- FILE tool: analyze the global structure of all provided files, encodes PDI of work
according to provided WORK ontology template
- LANG tool: re-encodes the syntax of the original process according to the chosen
language (FAUST)
The results of these extractions are stored in the archive, according to the OAIS
methodology, during the Ingest phase.
22.4.1 Preserving Logical Relationships
In order to preserve logical relationship, we developed several ontology templates
for specific elements of the objects we have to preserve. These ontologies have
been expressed using CIDOC-CRM (Conceptual Reference Model), that provides
definitions and a formal structure for describing the implicit and explicit concepts
and relationships used in cultural heritage documentation. CIDOC CRM is an ISO
standard (ISO 21127:2006).
Ontologies have been defined, and expressed in RDF for each element we have
to preserve:
•
Work
•
Real-time process (with subclasses, patch libraries, functions)
•
Documents: program notes, Hall program, Biography, Interview, audio sample,
Video sample, Score, Recording
...
These ontologies provide a template for relationship with other elements of the work
to be preserved.
Examples:
Ontology for WORK provides a template aimed to express the rela-
tionship between all elements composing the work, and particularly documentation
files is shown in Fig.
22.4
.
The ontology for “patch” (real-time process) is shown in Fig.
22.5
.
22.4.2 IRCAM Scenario
In order to test the validity of the provided information (PDI as well as
Representation Information), we developed specifically an “accelerated lifetime
test”, by assuming that one of the main elements in use today (the Max/MSP
software) is not available anymore.
