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Top > Publications > NDL Newsletter > Back Numbers 2007 > No. 158, December 2007

National Diet Library Newsletter

No. 158, December 2007

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NDL Digital Archive Portal "PORTA"
started full scale operation

NDL Digital Archive Portal "PORTA"

The NDL Digital Archive Portal "PORTA" is a comprehensive portal site which navigates users to a vast repository of Japanese digital information resources and services providing such resources. Since October 15, 2007, PORTA has started a fully-fledged service after examining its prototype system.

Searchable archives

PORTA guides you in an integrated fashion to 20 types of digital archives with 8 million data (as of October 2007) of other cooperating institutions as well as the National Diet Library (NDL) digital archives.

NDL digital archives

Digital archives of cooperating institutions

●…texts, digital images, etc.
○…catalogs, indexes, etc.
□…websites
☆…tools for research and reference information

Functions

[Search function]
Simple Search
: Search without identifying search item
Advanced Search: Keyword search by identifying titles, creators, classifications, etc.
Associative Search: Search method using keywords having a high association with phases and natural language
Classification Search: Search by following NDC (Nippon Decimal Classification) and NDLC (National Diet Library Classification)

[Accessory function]
Dictionary Search
: Search with dictionary data (NDL authority files) whose search results are graphically displayed
Search Support by Dictionaries: Display search results of dictionary data and links to the Wikipedia when searching by keywords
Links to Related Information: Search related websites etc. from search results

For more details, go to PORTA or read its booklet (PDF 1.91MB).

PORTA

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