National Diet Library Digital Archive Portal PORTA

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National Diet Library Digital Archive Portal -
PORTA -

• Gateway to digital information in Japan

April 3, 2008 Hideki Takeuchi (take-h_at_ndl.go.jp)
Planning Division, Administrative
Department National Diet Library, Japan
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1. What is PORTA?
http//porta.ndl.go.jp
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1. What is PORTA?

• Comprehensive portal site for navigating users to
  digital information
• Released in October 2007
• PORTA - the short name for the NDL Digital
  Archive Portal
• Gateway to digital information in Japan
• English version opened March 31, 2008

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1. What is PORTA?

• Day-to-day information seeking behavior is it
  enough to use only search engines?
• PORTA can search information from deep Web
  contents

Contents of Archive A
Contents of Archive B
Search
Archive A
Surface Web
Access to primary and other information in each
digital archive!
Archive B
Search for several digital archives at one time
Deep Web
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2. List of searchable archives

• 25 types of digital archives with 10 million data

NDL Digital Archives - Rare Books Image
Database - Digital Library from the Meiji Era -
Digital Library of Children's Literature -
Samples from the Rare Books Image - Catalog
(Japanese Books Magazines) - Japanese
Periodicals Index (from 2003) - Catalog of the
Gordon W. Prange Collection (Magazines
Newspapers) - Union Catalog Database of
Children's Literature - Database Navigation
Service (Dnavi) - Web Archiving Project (WARP)
- Current Awareness - Collaborative Reference
Database
Digital Archives of cooperating institutions -
Aozora Bunko - Selections from the digital
archive of the Akita Prefectural Library - Index
from collections of the Akita Prefectural
Library - Asian Historical Records Database -
National Archives of Japan Digital Archive -
Shinsho Map - Digital Okayama Encyclopedia -
List of digital archive sites of Governments -
Kyoto University Research Information
Repository - The Japan P.E.N. Club Digital
Library - Agriculture, Forestry and Fisheries
Research Information Center Union Catalog -
HERMES-IR(Special Collections)
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3. Outline of functions

• 3-1. Search functions
• - Keyword search
• - Associative search
• - Classification search
• - Dictionary search
• 3-2. Other convenient functions
• - New / updated contents, Rankings
• - Personalization function

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3-1. Search functions

• Search the metadata assigned to each content
• Use two types of search method
• - search database compiled by harvested
  metadata in advance
• - cross-search by accessing contents directly
  through the network on request

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3-1-1. Keyword Search

• Simple search
• - Search without identifying search item
• Advanced search
• - Keyword search by identifying titles,
  creators, classifications, etc.

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3-1-1. Keyword Search

• From search to view contents
• Top page - - Simple search

1. Keyword entry
2. Search
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3-1-1. Keyword Search

• From search to view contents

Search results
3. Select
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3-1-1. Keyword Search

• From search to view contents

Detailed search results
4. To contents
3. Select
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3-1-1. Keyword Search

• From search to view contents

5. Links to related contents
Detailed search results
3. Select
To location information
To online bookstore
To website search
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3-1-2. Other search functions

• Associative search
• - Search method using keywords having a high
  association with phrases and natural language
• - Useful to seek information related broadly
  to a theme instead of narrowing down the search
  by keywords
• Classification search
• - Search by following NDC, NDLC

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3-1-2. Other search functions

• Dictionary search
• - Search with dictionary data (NDL authority
  files) whose search results are graphically
  displayed

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3-1-2. Other search functions

• Search Support by dictionaries

Jump to search results in Wikipedia
Search results
OR search by the selected words is available
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3-2-1. New/updated contents, Ranking

• Top ten latest added or updated contents
• Access ranking
• Keyword ranking

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3-2-2. Personalization function

• After registration, you can change the settings
  to suit your preference and needs.
• User group options
• - five options
• - search objects and classification are preset
• Design options

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3-2-2. Personalization function

• Default settings for search options
• - Refined search conditions of search objects
  and classification and others can be saved
• Direct menu editing function
• - Menu items can be selected and added to the
  Direct Menu

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3-2-2. Personalization function

• Bookmark function
• - Favorite data with your comments can be
  saved
• - A kind of social bookmark
• - Knowledge sharing in digital contents by
  participation of users

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4. Cooperation with PORTA

• To be searchable by PORTA Guideline
• - Implement common specifications and
  guidelines for system cooperation
• - Metadata element set for harvesting and
  cross-search
• - Communications protocols

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4. Cooperation with PORTA

• Use of the interface provided by PORTA
• - To have outside systems utilize the search
  function of PORTA, it provides an API
  (Application Program Interface)
• - Released API SRW, OpenSearch, OpenURL,
  Z39.50
• - OAI-PMH API for data harvesting are planned
  to release

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4. Cooperation with PORTA

• Use of the interface provided by PORTA

PORTA users
PORTA Search functions
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Providing with value-added services
Searchable digital archives
Users of other websites
Other systems, websites, etc.
Using externally supplied interfaces (SRW etc.)
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5. PORTA in the future

• To build a national digital collection
• - NDL Digital Archiving System for long-term
  preservation and access to digital information
• - Will be Launched in FY 2009
• - PORTA will cooperate with NDL Digital
  Archiving System to facilitate access to digital
  information
• - improve functions and increase the searchable
  contents
• - expand cross-sectoral cooperation!

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5. PORTA in the future
Government agencies
Academic
Regions
Online periodicals and books
Cultures
????
Websites of Japan
Archives of Public and private sector
Corporations
Registration and preservation
Registration and preservation
Archives of libraries
Archives of various institutions
Archive of works
Archive of websites
WARP
NDL Digital Archive
Digital Archive Portal
Dnavi
Knowledge Database
Digitized contents (Digital Library from the
Meiji Era, Rare Books Image Database, etc.)

• - Integrated search
• - Jump to various contents
• Navigation to sources of information

Sending
Knowledge of materials
NDL-OPAC
Organization
Internet
Digitization
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• Thank you for your kind attention.