COCI CSV dataset of all the citation data

This dataset contains all the citation data (in CSV format) included in COCI, released on 23 January 2023. In particular, each line of the CSV file defines a citation, and includes the following information:

[field "oci"] the Open Citation Identifier (OCI) for the citation;
[field "citing"] the DOI of the citing entity;
[field "cited"] the DOI of the cited entity;
[field "creation"] the creation date of the citation (i.e. the publication date of the citing entity);
[field "timespan"] the time span of the citation (i.e. the interval between the publication date of the cited entity and the publication date of the citing entity);
[field "journal_sc"] it records whether the citation is a journal self-citations (i.e. the citing and the cited entities are published in the same journal);
[field "author_sc"] it records whether the citation is an author self-citation (i.e. the citing and the cited entities have at least one author in common).

This version of the dataset contains:

1,463,920,523 citations;
77,045,952 bibliographic resources.

The size of the zipped archive is 37.5 GB, while the size of the unzipped CSV file is 238.5 GB.

Additional information about COCI can be found at the official webpage.

本数据集囊括了全部的引用数据（CSV格式），该数据集由COCI于2023年1月23日发布。具体而言，CSV文件中的每一行定义了一条引用，并包含以下信息：

[字段 'oci'] 引用的开放引用标识符（Open Citation Identifier，简称OCI）；
[字段 'citing'] 引用实体的DOI；
[字段 'cited'] 被引用实体的DOI；
[字段 'creation'] 引用的创建日期（即引用实体的出版日期）；
[字段 'timespan'] 引用的时间跨度（即被引用实体的出版日期与引用实体的出版日期之间的间隔）；
[字段 'journal_sc'] 记录该引用是否为期刊自引（即引用实体和被引用实体发表在同一期刊上）；
[字段 'author_sc'] 记录该引用是否为作者自引（即引用实体和被引用实体至少有一位共同作者）。

本版本的数据集包含：

1,463,920,523条引用；
77,045,952条书目资源。

数据集的压缩档案大小为37.5 GB，解压后的CSV文件大小为238.5 GB。
有关COCI的更多信息，可在官方网页查阅。