Metadata for all DOIs in Crossref: JSON MongoDB exports of all works from the Crossref API

crossref-works.json.xz contains Crossref metadata for 87,542,370 DOIs retrieved by querying works from the Crossref API.<br>Queries began on 2017-03-21 and completed on 2017-04-02. The process died or stalled several times, but was restarted using the API's cursor. Accordingly, the works should represent the Crossref database as of 2017-03-21.<code><br></code><code>crossref-works.json.xz</code> is an xz-compressed file of exported works from MongoDB. It was created using <code>mongoexport</code> and can be imported into MongoDB using <code>mongoimport</code>. The file as a whole is not actually valid JSON. However, each line of the file is valid JSON and encodes a single work retrieved from the Crossref API. Accordingly, you can read this file without <code>mongoimport</code> by splitting at newlines and parsing each line as JSON.<br><br>See https://git.io/vSzIU for more information. The versioned shortDOI for this figshare article is https://doi.org/b48h.<br>

<code>crossref-works.json.xz</code> 包含了通过查询Crossref API的作品接口获取的87,542,370个数字对象标识符（DOI，Digital Object Identifier）对应的Crossref元数据。本次查询始于2017年3月21日，于2017年4月2日完成。采集进程曾多次中断或停滞，但借助API的游标（cursor）功能完成了重启。因此，该数据集收录的作品可代表2017年3月21日时的Crossref数据库状态。
<code><br></code><code>crossref-works.json.xz</code> 是经xz压缩的MongoDB导出作品文件。该文件通过<code>mongoexport</code>工具生成，也可使用<code>mongoimport</code>导入至MongoDB数据库。该文件整体并非标准合法JSON格式，但文件内每一行均为合法JSON条目，且各自编码了一条从Crossref API获取的作品元数据。因此，无需借助<code>mongoimport</code>即可读取该文件：只需按换行符分割内容，再将每一行作为独立JSON对象进行解析即可。
更多详细信息可参阅 https://git.io/vSzIU。该figshare文章的带版本短数字对象标识符（shortDOI）为 https://doi.org/b48h。