us gpo aip independence test
DESCRIPTION
US GPO AIP Independence Test. CS 496A – Senior Design Team members: Antonio Castillo, Johnny Ng, Aram Weintraub, Tin-Shuk Wong Faculty advisor: Dr. Russ Abbott GPO contact: Kate Zwaard. Overview. Background OAIS FDsys Project Objectives AIP METS, MODS, and PREMIS Solution Strategy - PowerPoint PPT PresentationTRANSCRIPT
US GPOAIP Independence Test
CS 496A – Senior Design
Team members: Antonio Castillo, Johnny Ng, Aram Weintraub, Tin-Shuk Wong
Faculty advisor: Dr. Russ AbbottGPO contact: Kate Zwaard
Overview Background
OAIS FDsys Project Objectives
AIP METS, MODS, and PREMIS
Solution Strategy XML parsing A note on deliverables Repositories Testing
Conclusion
OAIS Open Archival Information System
“An OAIS is an archive consisting of an organization of people and systems that has accepted the responsibility to preserve information and make it available for a Designated Community”
Developed by the Consultive Committee on Space Data Systems (ISO 14721:2003)
FDsysFederal Digital System
FDsys – Am OAIS maintained by the U.S. Government Printing Office to provide public access to information submitted by Congress and Federal agencies.
OAIS Primary Functions Ingest – Turn SIPs into AIPs Archival Storage – Storage and retrieval
of AIPs Data Management – Populating,
maintaining and accessing the varieties of information
Administration – Controls day to day operations
Preservation Planning – Maintaining archive accessibility
Access – Functions for access of archive
Information Package- critical component of OAIS
The information package is a conceptual linking of content information with its preservation description and packaging information.
Three kinds of information packages SIP – Submission Information Package AIP – Archive Information Package DIP – Distribution Information Package
AIP
Archival Information Package Defines how digital objects and its associated
metadata are packaged using XML based files. METS (binding file) MODS PREMIS
Project Objective: Prove AIP Independence
An AIP is independent if, in the event of catastrophic and irretrievable loss or damage of the content management system, a knowledgeable user can still make sense of the data.
Project Objectives This project simulates FDsys breaking down
due to some catastrophic attack or error. We are attempting to categorize and
reconstruct an amount of sample data from FDsys outside the context of the actual CMS. The only references we have available, other
than the actual files in the archive, are publicly defined standards.
It is our hope that this project will help GPO improve the robustness of their file system.
AIP: METS Schema
XML file format
Seven major sections
AIP: METS Schema
5 Major Sections5 Major Sections 1) METS Header 2) Descriptive Metadata 3) Administrative Metadata 4) File Section 5) Structural Map
AIP: MODS
Descriptive metadata
Extension to METS
Top-level elements Mandatory Recommended Optional
AIP: MODS
AIP: PREMIS
Preservation metadata
Extension to METS
PREMIS Data Model Intellectual Entity Object Entity Event Entity Agent Entity Rights Entity*
AIP: PREMIS
Solution Strategy
Data submitted to us are AIPs, not SIPs. Repository software cannot ingest AIPs, only SIPs. We must write scripts that parse the AIPs in such a way to construct SIPs from the the arbitrary file structure, then ingest those SIPs with a repository software to create to new AIPs.
XML Parsing As described above, all metadata is in
the form of XML files. Hence, using code to read XML files is integral to the project.
We plan to use the Java programming language for our scripting needs. Java API for XML Processing (JAXP): the
standard Java library for handling XML It provides several different possible
representations for XML
A Note on Deliverables
This is not a typical computer science design project because our aim is not to design software. Instead, we will be conducting scripted tests on real data and forming conclusions based on the results.
Deliverables will most likely include: a written report of our findings and
recommendations a reorganized version of the input data
Testing After parsing and organizing the data, it will be
important to perform checks to ensure that the reconstruction is accurate. We may send a preliminary report to GPO for
verification.
The exact testing procedure is still undefined, as we haven’t had a chance to investigate the data in depth yet. Our goals should be clearer once we understand
exactly what type of data we are dealing with.
Repositories Third party repository software to
ingest created SIPs. DSpace, Fedora Commons (Duraspace)
Based on simple technologies JavaMysqlApache Tomcat Javascript Server
Conclusion
Our thanks to Kate, Dr. Abbott, and Dr. Pamula for their support.