Metadata and API

CiNii provides Web API (Application Program Interface) for system linkage.
The following three type forms are being provided.

OpenURL

OpenURL is a standard of URL for transferring bibliographic information of articles, books and journals, etc. between systems . It is used for linking with library OPAC (Online Public Access Catalog) and Link Resolver, etc.
About details of OpenURL, see the following Page.
OpenURL - Wikipedia, the free encyclopedia

CiNii offers the OpenURL(*Note1) receiving function. Describing a link in the OpenURL format enables links to specific articles, journal information, or search results.
Also, CiNii Articles has the OpenURL sending function (function of showing the link to Link Resolver or OPAC). For more details, see " Open URL Sending Function"

【Function Diagram】（*The OpenURL in the diagram has been simplified）

OpenURL受信機能概念図

About details of receivable parameters, etc., see the each API page.

CiNii Article
About the OpenURL Receiving Function for CiNii Articles>>
About the OpenURL Sending Function for CiNii Articles>>

CiNii Books
About the OpenURL Receiving Function for CiNii Books>>

*NOTE1:OpenURL is a standard description format for transmitting data such as article, book and journal information in the URL format between systems.

OpenSearch

Standards for using search results of some web services from other web services etc.
For more information about OpenSearch, please refer to the following website.
http://sites.google.com/site/tsukamoto/doc/opensearch/spec-1-1-draft4

Example of use of OpenSearch

A. Search for Articles with your browser’s search bar.

Example : Search for Articles with the search bar on Firefox
* Web browsers such as Internet 7 and 8, etc. are possible to perform the equivalent thing.

Display the CiNii page by Firefox. After clicking on the icon "▼" of the left end of search box, select [Add "CiNii"](or [Add "CiNii Author"]) and add it.
Clicking on the icon "▼" of the left end of search bar, select "CiNii OpenSearch"(or "CiNii Author OpenSearch" etc.).
Enter keyword(s) in the search bar and the browser will take you to the article search results page.

B. RSS and Atom Feed

Registering the search results of the keyword into "RSS reader" enables you to check the updates of the keyword.

ex) Registers into the RSS reader of Internet Explorer 9.

Display a search-result.
Choose "RSS 1.0" or "Atom 1.0" from "Tool" ＞ "feeding search".
Contents screen of feed of RSS or Atom is displayed. Click on "subscribe this feed".
Select screen of choosing the directory to save the feed is displayed. Please specify the place.
You can check on "feed" tab of "bookmark", and will be notified when there is updating.

C. Request query of OpenSearch to CiNii

Making query of OpenSearch and request to CiNii enable you to search equivalent to search on the screen of CiNii. You can use for system linkage, etc.

Example of query (Article Search)：
http://ci.nii.ac.jp/opensearch/search?q=%E5%AE%89%E9%81%94&count=20&start=1&lang=ja&title=library&author=&affiliation=&journal=&issn=&volume=&issue=& page=&publisher=&references=&year_from=&year_to=&range=&sortorder=&format=rss
Example of response (RSS feed)：
query specific

In CiNii, API is prepared for every search type. About the specification of query and response for each search type, see the each API page.

CiNii Article
CiNii Articles OpenSearch for Articles>>
CiNii Articles OpenSearch for Authors>>
CiNii Articles OpenSearch for Full text>>

CiNii Books
CiNii Books OpenSearch for Books & Journals>>
CiNii Books OpenSearch for Authors>>
CiNii Books OpenSearch for Libraries>>
CiNii Books OpenSearch for Holdings>>

RDF

RDF is a standard for expression of metadata (data about data). The abbreviation for Resource Description Framework.
With RDF, CiNii’s data can be utilized in various ways since each data item, like article name or author name, is structured in a standardized way using metadata descriptors such as Dublin Core, etc. and is output with XML.
For more information please refer to the following site.
http://www.w3.org/RDF/

The output method of RDF is as follows.

Display the detailed information page. (RDF can be outputted by each of papers, authors, books and journals and libraries.)
Add ".rdf" to the URL in the address bar. Even when the RDF URL is input directly, the same results are displayed because the RDF URL becomes "details page URL" + ".rdf".
Example：http://ci.nii.ac.jp/naid/110004744915 → http://ci.nii.ac.jp/naid/110004744915.rdf
The content of the details page is output with RDF.

<?xml version="1.0" encoding="utf-8"?> <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:dcterms="http://purl.org/dc/terms/" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:prism="http://prismstandard.org/namespaces/basic/2.0/" xmlns:con="http://www.w3.org/2000/10/swap/pim/contact#" xmlns:cinii="http://ci.nii.ac.jp/ns/1.0/"> <rdf:Description rdf:about="http://ci.nii.ac.jp/naid/110004744915#article"> <foaf:isPrimaryTopicOf rdf:resource="http://ci.nii.ac.jp/naid/110004744915.rdf" /> <dc:title>情報爆発時代の研究基盤構想 : データマイニング、次世代サーチなどの研究(「自動化:推論,発見,学習,データマイニング」及び一般)</dc:title> <dc:creator>安達淳</dc:creator> <dc:publisher>社団法人電子情報通信学会</dc:publisher> <prism:publicationName>電子情報通信学会技術研究報告. AI, 人工知能と知識処理</prism:publicationName> <prism:issn>09135685</prism:issn> <prism:volume>106</prism:volume> <prism:number>38</prism:number> <prism:startingPage>29</prism:startingPage> <prism:endingPage>32</prism:endingPage> <prism:publicationDate>2006-05-11</prism:publicationDate> <dc:description>2006年度から実質的に開始した、科研費による大規模な共同研究「情報爆発IT基盤」の概要について紹介し、何をねらって5年間に渡る研究を進めるかについて概要を述べる。</dc:description> <foaf:topic rdf:resource="http://ci.nii.ac.jp/keyword/%E6%83%85%E5%A0%B1%E7%88%86%E7%99%BA" dc:title="情報爆発" /> <foaf:topic rdf:resource="http://ci.nii.ac.jp/keyword/%E3%83%87%E3%83%BC%E3%82%BF%E3%83%9E%E3%82%A4%E3%83%8B%E3%83%B3%E3%82%B0" dc:title="データマイニング" /> <foaf:topic rdf:resource="http://ci.nii.ac.jp/keyword/%E6%83%85%E5%A0%B1%E6%A4%9C%E7%B4%A2" dc:title="情報検索" /> <foaf:topic rdf:resource="http://ci.nii.ac.jp/keyword/%E3%82%B9%E3%82%B1%E3%83%BC%E3%83%A9%E3%83%96%E3%83%AB%E8%A8%88%E7%AE%97%E5%9F%BA%E7%9B%A4" dc:title="スケーラブル計算基盤" /> <foaf:topic rdf:resource="http://ci.nii.ac.jp/keyword/%E5%A4%A7%E8%A6%8F%E6%A8%A1%E3%82%B3%E3%83%BC%E3%83%91%E3%82%B9" dc:title="大規模コーパス" /> <foaf:topic rdf:resource="http://ci.nii.ac.jp/keyword/%E5%AE%9F%E4%B8%96%E7%95%8C%E3%82%A4%E3%83%B3%E3%82%BF%E3%83%A9%E3%82%AF%E3%82%B7%E3%83%A7%E3%83%B3" dc:title="実世界インタラクション" /> <dc:date>2006-05-11</dc:date> <cinii:naid>110004744915</cinii:naid> <cinii:ncid>AN10013061</cinii:ncid> <cinii:ndljpi>7937888</cinii:ndljpi> <dc:language>JPN</dc:language> <dc:source>CJP</dc:source> <dc:source>NDL</dc:source> <dc:source>NII-ELS</dc:source> <cinii:fulltext>1</cinii:fulltext> <dcterms:isPartOf rdf:resource="http://ci.nii.ac.jp/ncid/AN10013061" dc:title="電子情報通信学会技術研究報告. AI, 人工知能と知識処理" /> <rdfs:seeAlso rdf:resource="http://ci.nii.ac.jp/lognavi?name=web&tourl=opac.ndl.go.jp%2farticleid%2f7937888%2fjpn" dc:title="NDL-OPAC - 国立国会図書館で本をさがす" /> </rdf:Description> <rdf:Description rdf:about="http://ci.nii.ac.jp/naid/110004744915#article" xml:lang="en"> <dc:title>Research Project on Cyber Infrastructure for Information-explosion Era</dc:title> <dc:creator>ADACHI Jun</dc:creator> <dc:publisher>The Institute of Electronics, Information and Communication Engineers</dc:publisher> <prism:publicationName>IEICE technical report. Artificial intelligence and knowledge-based processing</prism:publicationName> <dc:description>We has just started a large-scale collaborative research project which is titled "Cyber Infrastructure for Information-explosion Era" from April 2006, supported by the Grant-in-Aid for Scientific Research provided by the Ministry of Education, Culture, Sports, Science and Technology. In this talk, the aims and the structure of this project is outlined.</dc:description> <foaf:topic rdf:resource="http://ci.nii.ac.jp/keyword/information_explosion" dc:title="information_explosion" /> <foaf:topic rdf:resource="http://ci.nii.ac.jp/keyword/data_mining" dc:title="data_mining" /> <foaf:topic rdf:resource="http://ci.nii.ac.jp/keyword/information_retrieval" dc:title="information_retrieval" /> <foaf:topic rdf:resource="http://ci.nii.ac.jp/keyword/scalable_computing_platform" dc:title="scalable_computing_platform" /> <foaf:topic rdf:resource="http://ci.nii.ac.jp/keyword/large-scale_corpora" dc:title="large-scale_corpora" /> <foaf:topic rdf:resource="http://ci.nii.ac.jp/keyword/real-world_interaction" dc:title="real-world_interaction" /> </rdf:Description> <rdf:Description rdf:about="http://ci.nii.ac.jp/naid/110004744915#article"> <foaf:depiction> <foaf:Image rdf:about="http://ci.nii.ac.jp/pdfthumbnail/11/1100/110004/110004744915.jpg" /> </foaf:depiction> <foaf:maker> <foaf:Person rdf:about="http://ci.nii.ac.jp/nrid/1000080143551"> <foaf:name>安達淳</foaf:name> <foaf:name xml:lang="en">ADACHI Jun</foaf:name> <con:organization> <foaf:Organization rdf:about="http://ci.nii.ac.jp/org/%E5%9B%BD%E7%AB%8B%E6%83%85%E5%A0%B1%E5%AD%A6%E7%A0%94%E7%A9%B6%E6%89%80"> <foaf:name>国立情報学研究所</foaf:name> <foaf:name xml:lang="en">National Institute of Informatics</foaf:name> </foaf:Organization> </con:organization> </foaf:Person> </foaf:maker> </rdf:Description> </rdf:RDF>

About details of a format, see the each API page.

CiNii Article
CiNii Articles RDF for Articles>>
CiNii Articles RDF for Authors>>

CiNii Books
CiNii Books RDF for Books & Journals>>
CiNii Books RDF for Authors>>
CiNii Books RDF for Libraries>>

API User Registration

API user of OpenSearch and RDF, please register from the following.

API User Registration>>

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