Transcript Greenstone Digital Library - PKU: Search Engine and Web

Greenstone Digital Library
Usage and Implementation
By:
Paul Raymond A. Afroilan
Network Applications Team
Preginet, ASTI-DOST
Introduction
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Greenstone is a suite of software for building and
distributing digital library collections. It provides a
new way of organizing information and publishing it
on the Internet or on CD-ROM. Greenstone is
produced by the New Zealand Digital Library
Project at the University of Waikato, and developed
and distributed in cooperation with UNESCO and the
Human Info NGO. It is open-source, multilingual
software, issued under the terms of the GNU General
Public License.
Features
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Builds and distributes digital library
collections
Full-text document search and display
Multi-platform support
Web-based user interface
Highly customizable
Document collections can be exported to CDROMs
Can be used for archiving
Overview of Greenstone
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Collections
A typical digital library built with
Greenstone will contain many
collections, individually organized—
though they bear a strong family
resemblance. Easily maintained,
collections can be augmented and
rebuilt automatically.
Overview of Greenstone
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Document Formats
Source documents come in a variety of
formats, and are converted into a
standard XML form for indexing by
“plugins.” Plugins distributed with
Greenstone process plain text, HTML,
WORD and PDF documents, and
Usenet and E-mail messages.
Overview of Greenstone
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Multimedia documents
Collections can contain text, pictures,
audio and video. Non-textual material is
either linked into the textual documents
or accompanied by textual descriptions
(such as figure captions) to allow fulltext searching and browsing.
Using Greenstone Collections
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Figure 1
Figure 1 shows a
screenshot of the
“Demo”
collection
supplied
with
the
Greenstone software.
Almost all icons are
clickable.
Several
icons appear at the
top of almost every
page.
Using Greenstone Collections
Using Greenstone Collections
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Figure 2
Figure 2 shows a
document in the demo
collection. Beside the
photograph is a table of
contents: the entry in
bold face marks where
you are, in this case
Introduction
and
Summary—Section 1 of
the chosen book. This
table is expandable:
click on the folders to
open them or close
them.
Using Greenstone Collections
Making Greenstone
Collections
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The simplest way to build new
collections is to use Greenstone’s
“librarian” interface (GLI). This allows
you to collect sets of documents, import
or assign metadata, and build them into
a Greenstone collection. It supports five
basic
activities,
which
can
be
interleaved
but
are
nominally
undertaken in this order:
Making Greenstone
Collections
1. Copy documents from the computer’s file
space, including existing collections, into
the new collection. Any existing metadata
remains “attached” to these documents.
Documents may also be gathered from the
web through a built-in mirroring facility.
2. Enrich the documents by adding further
metadata to individual documents or groups
of documents.
Making Greenstone
Collections
3. Design the collection by determining
its appearance and the access
facilities that it will support.
4. Build the collection using Greenstone.
5. Preview the newly created collections,
which will have been installed on your
Greenstone home page as one of the
regular collections.
GLI – Start a new collection
GLI – Exploring file space
GLI – Importing metadata
GLI – Assigning metadata
GLI – Designing a collection
GLI – Specifying plug-ins
GLI – Create collection
GLI – View collection
The Collector: Collection Building
Login >>
The Collector: Collection Building
<< Collection
information
The Collector: Collection Building
<< Getting the
source file
The Collector: Collection Building
Collection >>
Configuration
Searching Collections
Viewing Documents
Implementation
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The Greenstone Digital Library software can
run on any linux or windows based platform.
The Preginet Digital Library system
(http://digilib.asti.dost.gov.ph) was installed in
a server running Redhat Linux 9. Other
software requirements include the java
runtime system and apache webserver (for a
more detailed description of the system
requirements refer to GSDL documentation
available at www.greenstone.org).
Implementation
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The web-based user interface was
customized in accordance to the ASTI
theme and collections organized to
satisfy the needs of the partner
institutions (for more details in
customizing greenstone refer to the
development manual available at
www.greenstone.org).
Services
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The system utilizes the Preginet
infrastructure to provide the much
needed content to connected partners.
It is offered as a service to partners,
which include collection hosting and
administration. Preginet also offers
system customization and setup,
training-workshops for users and
administrators.
Services
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In these efforts the Preginet Digital Library
system aims to link different repositories from
partner institutions and assembling virtual
collections that users can search and browse
online.
 Currently the Network Applications Team is
focused in encouraging partners to avail of
the service in the attempt to promote
information
sharing
and
enhance
collaborative research and learning.
Contacts
ASTI Website: www.asti.dost.gov.ph
 PREGINET Digital Library System:
http://digilib.asti.dost.gov.ph
 Email: [email protected]
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