Presentation slides I used at this year (2012)'s 14th International Conference on Asia-Pacific Digital Libraries, held in Taipei, Taiwan. The pre-print is here[1], and the actual publisher copy is here [2]. I used a bastardised version of the Beamer theme Torino [3] [1] http://goo.gl/ne5tX [2] http://goo.gl/NbNB3 [3] http://blog.barisione.org/2007-09/torino-a-pretty-theme-for-latex-beamer

2. Bonolo∗
A General Digital Library System for File-based Collections
Lighton Phiri Kyle Williams Miles Robinson
Stuart Hammar Hussein Suleman
Digital Libraries Laboratory
Department of Computer Science
University of Cape Town
November 13, 2012
∗
Sotho word meaning easy.

3. http://martinwest.uct.ac.za
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4. http://lloydbleekcollection.cs.uct.ac.za
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5. Motivation
Preservation costs
Preservation lifecycle
Heritage funding model
Technical skills and education
Content curators skillset
Steep learning curve for most solutions
Internet bandwidth
Bandwidth intensive solutions
Cloud-centric solutions not feasible
Existing solutions
Complexity
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6. Design Principles
Design for least possible resources
Flexible design to facilitate extensibility
Hardware and/or software platform independence
Heterogeneous object, metadata and service integration
Minimalist design approach
Simplified preservation process
Structured organisation of data
Support for community and international standards
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7. Prototype Implementation
Clients
Curator End User Solr
Services
Authentication Browse Commenting
Indexing Search Tagging
File System
Repository
Thumbnails
Metadata Content Indicies
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8. Tools and Technologies
Core technologies
Apache Tomcat
CSS
HTML
Java
JavaScript
XML
Additional software components
Apache Solr
ImageMagick
SQLite
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9. Repository Design
Thumbnails
Metadata Content Indicies
Hierarchical structure
Digital content and metadata stored on file system
Objects stored with corresponding metadata record
Metadata records encoded using XML
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10. Repository Design (2)
archive/
notebooks
wilhelmbleeknotebooks
BC 151 A1 4 001
A1 4 1 00001.JPG
A1 4 1 00001.JPG.metadata
:
BC 151 A1 4 001.metadata
:
wilhelmbleeknotebooks.metadata
drawings
stories
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11. End User Interface
Curator End User Solr
Authentication
Browse
Commenting
Search
Tagging
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12. End User Interface (2)
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13. Curator Interface
Curator End User Solr
Authentication
Batch import and export
Browse
Collection and Object management (add, edit, delete)
Indexing
Search
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14. Curator Interface (2)
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15. End User Interface UX Experiment
Objective
Feasibility of building user interface using file store
Assess impact of file store on user experience
Target Group
Individuals with basic Web experience
17 participants (80% students)
Approach
Informed consent
Pre-experiment briefing
Typical DL end user tasks (search, browse)
Post-experiment questionnaire
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16. End User Interface UX Experiment (2)
5
Intuitive
Simple
Satisfied
4 Expected
Response
Effective
Beneficial
Survey Participants
3
2
1
0
Search& Browse Navigability Similarity General
Average UX Ratings
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17. Curator Interface UX Experiment
Objective
Assess user experience when performing curation tasks
Target Group
Individuals with no experience working with DL tools
Social networking site recruitment
23 participants
Approach
Intrinsic Motivation Inventory
Five (5) minute ’HOWTO’ screencast
Curation tasks with two datasets
Online questionnaire
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18. Curator Interface UX Experiment (2)
25
Strongly Agree
Agree
Neutral
20
Disagree
Strongly Disagree
Survey Participants
15
10
5
0
Interest/Enjoyment Perceived Competence Value/Usefulness
Average UX Ratings
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19. Curator Interface UX Experiment (3)
Participants general comments
”· · · Also, I fail to see how Bonolo differentiates itself from
something like Dropbox. I can create a folder structure on my
PC and upload it to Dropbox very easily. I can then browse my
files and folders in Dropbox’s web interface.· · · ”
”· · · I have to say though that I managed to complete the tasks
without watching the video (which is a great sign I think). I’m
impatient with manuals but even worse with instructional
videos· · · ”
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20. Repository Performance Experiment
Objective
Impact of file store structure on performance
Performance metrics: response time
Test Environment
Intel Core 2 Duo CPU E7400@ 2.80GHz
2 GB RAM
32-bit Windows 7 Ultimate edition
Approach
Structured and unstructured collections
Exponential increase of files in collections
Load time and corresponding data transfer during navigation
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21. Repository Performance Experiment (2)
5000
Structured
Unstructured
4000
Time (Milliseconds)
3000
2000
1000
0
1,024 2,048 4,096 8,192 16,384
Files in Directory
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22. Conclusion
Experimental results look promising
Effectiveness
Usability
Medium-sized collections
Work in progress
Evaluation
Flexibility
Scalability
Future work
Reference implementation
Design principles
Extensibility
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23. Thank You
Questions?
Additional Information
http://dl.cs.uct.ac.za