如何工作

搜索

用AGRIS搜索内容,只需在搜索框中输入有关需要查找的主题的关键词。

如果输入多于一个关键词,系统会默认使用“布尔逻辑或”运算符,先检索包含所有关键词的记录,再检索只包含部分关键词的记录。

手动进行更复杂的搜索,包括其他布尔逻辑运算符,请参考AGRIS搜索帮助(英文)页面。

搜索结果在一页显示,左侧是文献数据,右侧是资源链接和高级搜索区。

进行过滤搜索,点击高级搜索区中的选项:AGROVOC主字符、国家名称和内容类型。搜索区的选项是与搜索到的记录整体最相关的。

进一步进行过滤搜索,点击“获得典型视图”。系统会跳转到文献数据的经典视图页面,便于基于文献数据领域进行高级搜索,设置过滤条件如数据提供者的国家、语言、全文记录的情况等。

 

……关于文献数据

结果页第一页左侧显示前十条最相关的文献记录,可以浏览全部结果。最初只显示作者、题目和摘要,但点击题目,就会显示整条记录全部内容。

点击“获得典型视图”,在记录列表顶端可以找到,便可以:
进入文献数据的经典视图页面。
进行高级搜索,限于文献数据。
输出单条或前250条数据,格式可以是:AGRIS APEndNote TXTEndNote XMLRDF XMLHTMLTXT


……关于网络资源扩充AGRIS数据

点击数据标题,系统会跳转至集成页面,显示全部AGRIS文献记录和相关网络资源。目前,AGRIS包含七百多万个集成页面。谷歌也索引了这些页面,因此可以直接通过谷歌搜索进入。

 


集成页面包含什么?

文献信息

AGRIS文献记录包含丰富的元数据,并大多由粮农组织的农业多语种叙词表AGROVOC索引。AGRIS文献记录覆盖农业、林业、动物饲养、水产科学、渔业、人类营养和推广领域的出版物。出版物形式多样,包括期刊文章、专题著作及书目章节,还有特殊灰色文件,例如未出版的科学和技术报告、论文及会议文件。通过谷歌小工具可以查看大多数AGRIS记录的全文。

网络资源链接

以下的数据资源列表是:1) 与AGROVOC叙词表匹配,2) 与AGRIS记录链接(全部由AGROVOC索引)。这样一来,AGRIS可以从以下资源获取信息,扩充AGRIS数据。

DBpedia: A community effort to extract structured information from Wikipedia and to make this information available on the web.
AGRIS extracts from DBPedia the definitions of concepts. It also provides you with the possibility to directly modify the information in Wikipedia.

World Bank: An international financial institution that provides loans to developing countries for capital programs. The World Bank Indicators APIs let you programmatically access more than 3,000 indicators and query the data in several ways, using parameters to specify your request. The Indicators give a lot of details about countries: name, region, coordinates, capital, income level, lending type, total population, etc.
AGRIS uses the World Bank APIs to retrieve widgets (maps, charts).

Google Custom Search API enables you to search a website or a collection of websites, create a search engine tailored to specific needs and interests, and present the results in your website.
AGRIS queries Google Custom Search APIs to retrieve the full texts of the AGRIS records.

Nature OpenSearch provides an open, bibliographic search service for content hosted on nature.com, comprising around half a million news and research articles and citations. The API is accessible both through a Sparql endpoint as a REST Web service (AGRIS’s choice).
AGRIS queries Nature’s API to retrieve articles and publications.

FAO Geopolitical Ontology – Country profiles: An ontology that contains country statistics, official country names and codes.
AGRIS extracts from this ontology information about countries.

Global Biodiversity Information Facility  works to mobilize data and to improve search mechanisms, data and metadata standards, web services, and the other components of an Internet-based information infrastructure for biodiversity.
AGRIS queries the GBIF repository to obtain the KML of the Distribution Map for Species.

International Food Policy Research Institute (IFPRI): An international agricultural research center that aims to improve the understanding of national agricultural and food policies to promote the adoption of innovations in agricultural technology.
AGRIS queries the IFPRI Sparql endpoint to retrieve the Global Hunger Indicator and Children Mortality Rate by country.

FAO Fisheries and Aquaculture fact sheets API allows you to download statistical graphs about fish species.
AGRIS queries the APIs to obtain the Aquatic species capture and aquaculture production graphs.

Bioversity International contains 3200 unique original field report documents, recording information about more than 200,000 landrace and crop wild relative samples collected all over the world for almost forty years.
AGRIS extracts information from the Crop Collecting Missions.

Chinese Agricultural Sci-tech Documents Database (CASDD), a bibliographic database covering literature from more than 1,000 titles of Chinese agricultural academic journals, proceedings, and other materials. A dedicated Web service was set up only to allow AGRIS to access this repository, relying on the alignment between AGROVOC and CAT.

CGRIS germplasm database, a repository for all type of plant genetic resources information in China. It contains over 4000 MB of data about 200 kinds of crops. 410,000 germplasm resources are stored in the CGRIS database. The access to this database is provided by a Web service that accepts scientific names or AGROVOC URIs.


集成页面是如何创建的?

开放数据互联技术连接AGRIS文献数据集(数据、期刊、中心)与相关网络数据集。

  1. AGRIS数据集转换为RDF格式,形成两百多万个三元组。如欲查看形成流程,请前往建立AGRIS记录的RDF数据集使用的系列的属性值。
  2. AGROVOC与其他叙词表同步。
  3. 发现Sparql端点、网络服务及应用程序编程接口。
  4. 通过AGROVOC LOD支持,AGRIS RDF与外部数据集互连。

最终结果:当前的网络集成应用,可以查询AGRIS-RDF内容及其链接的资源。

何处可以进入AGRIS Sparql端点?

AAGRIS RDF存储在马来西亚微电子系统研究院
MIMOS),使用Allegrograph图形数据库管理三元组。进入AGRIS数据集的Sparql端点,请参见以下链接。

Sparql Endpoint AGRIS-Records

 

Sparql Endpoint AGRIS-Serials

 

Sparql Endpoint AGRIS-Centers

 

   

然后,VoID文件“VoID.ttl”提供链接的数据集的描述,同时Data Hub网站提供AGRIS LOD更多相关信息,能够搜索数据和已出版的数据集。