Types, open citations, closed citations, publishers, and participation reports of Crossref entities

This publication contains several datasets that have been used in the paper "Crowdsourcing open citations with CROCI – An analysis of the current status of open citations, and a proposal" submitted to the 17th International Conference on Scientometrics and Bibliometrics (ISSI 2019), available at https://opencitations.wordpress.com/2019/02/07/crowdsourcing-open-citations-with-croci/. Additional information about the analyses described in the paper, including the code and the data we have used to compute all the figures, is available as a Jupyter notebook at https://github.com/sosgang/pushing-open-citations-issi2019/blob/master/script/croci_nb.ipynb. The datasets contain the following information. <strong>non_open.zip:</strong> it is a zipped (~5 GB unzipped) CSV file containing the numbers of open citations and closed citations received by the entities in the Crossref dump used in our computation, dated October 2018. All the entity types retrieved from Crossref were aligned to one of following five categories: journal, book, proceedings, dataset, other. The open CC0 citation data we used came from the CSV dump of most recent release of COCI dated 12 November 2018. The number of closed citations was calculated by subtracting the number of open citations to each entity available within COCI from the value “is-referenced-by-count” available in the Crossref metadata for that particular cited entity, which reports all the DOI-to-DOI citation links that point to the cited entity from within the whole Crossref database (including those present in the Crossref ‘closed’ dataset). The columns of the CSV file are the following ones: <em>doi:</em> the DOI of the publication in Crossref; <em>type:</em> the type of the publication as indicated in Crossref; <em>cited_by:</em> the number of open citations received by the publication according to COCI; <em>non_open:</em> the number of closed citations received by the publication according to Crossref + COCI. <strong>croci_types.csv:</strong> it is a CSV file that contains the numbers of open citations and closed citations received by the entities in the Crossref dump used in our computation, as collected in the previous CSV file, alligned in five classes depening on the entity types retrieved from Crossref: <em>journal</em> (Crossref types: journal-article, journal-issue, journal-volume, journal), <em>book</em> (Crossref types: book, book-chapter, book-section, monograph, book track, book-part, book-set, reference-book, dissertation, book series, edited book), <em>proceedings</em> (Crossref types: proceedings-article, proceedings, proceedings-series), <em>dataset</em> (Crossref types: dataset), <em>other</em> (Crossref types: other, report, peer review, reference-entry, component, report-series, standard, posted-content, standard-series). The columns of the CSV file are the following ones: <em>type:</em> the type publication between "journal", "book", "proceedings", "dataset", "other"; <em>label:</em> the label assigned to the type for visualisation purposes; <em>coci_open_cit</em>: the number of open citations received by the publication type according to COCI; <em>crossref_close_cit:</em> the number of closed citations received by the publication according to Crossref + COCI. <strong>publishers_cits.csv:</strong> it is a CSV file that contains the top twenty publishers that received the greatest number of open citations. The columns of the CSV file are the following ones: <em>publisher</em>: the name of the publisher; <em>doi_prefix</em>: the list of DOI prefixes used assigned by the publisher; <em>coci_open_cit</em>: the number of open citations received by the publications of the publisher according to COCI; <em>crossref_close_cit</em>: the number of closed citations received by the publications of the publishers according to Crossref + COCI; <em>total_cit</em>: the total number of citations received by the publications of the publisher (= <em>coci_open_cit</em> + <em>crossref_close_cit</em>). <strong>20publishers_cr.csv: </strong>it is a CSV file that contains the numbers of the contributions to open citations made by the twenty publishers introduced in the previous CSV file as of 24 January 2018, according to the data available through the Crossref API. The counts listed in this file refers to the number of publications for which each publisher has submitted metadata to Crossref that include the publication’s reference list. The categories 'closed', 'limited' and 'open' refer to publications for which the reference lists are not visible to anyone outside the Crossref Cited-by membership, are visible only to them and to Crossref Metadata Plus members, or are visible to all, respectively. In addition, the file also record the total number of publications for which the publisher has submitted metadata to Crossref, whether or not those metadata include the reference lists of those publications. The columns of the CSV file are the following ones: <em>publisher: </em>the name of the publisher; <em>open: </em>the number of publications in Crossref with an 'open' visibility for their reference lists; <em>limited: </em>the number of publications in Crossref with an 'limited' visibility for their reference lists; <em>closed: </em>the number of publications in Crossref with an 'closed' visibility for their reference lists; <em>overall_deposited:</em> the overall number of publications for which the publisher has submitted metadata to Crossref.本数据集集合包含多篇用于论文《使用CROCI众包开放引用——开放引用现状分析与提案》的数据集，该论文已提交至第17届国际科学计量学与文献计量学会议（ISSI 2019），可在https://opencitations.wordpress.com/2019/02/07/crowdsourcing-open-citations-with-croci/获取。 关于论文中所述分析的补充信息（包括用于生成所有图表的代码与数据），可通过Jupyter笔记本（Jupyter Notebook）获取，地址为https://github.com/sosgang/pushing-open-citations-issi2019/blob/master/script/croci_nb.ipynb。本数据集集合包含以下内容。 **non_open.zip：** 该文件为压缩包（解压后约5 GB），格式为逗号分隔值（CSV）文件，包含2018年10月的Crossref数据集转储中各实体所获得的开放引用与非开放引用数量。从Crossref中提取的所有实体类型均被归类至以下五类之一：期刊（journal）、图书（book）、会议论文集（proceedings）、数据集（dataset）及其他（other）。本次使用的CC0许可开放引用数据，源自2018年11月12日发布的最新版COCI数据集转储CSV文件。非开放引用的数量通过以下方式计算：从目标被引实体的Crossref元数据中的“is-referenced-by-count”字段值中，减去COCI中可获取的该实体所获得的开放引用数量。该元数据字段记录了整个Crossref数据库中指向该被引实体的所有DOI到DOI的引用链接（包括Crossref“非开放”数据集中的链接）。 该CSV文件包含以下字段： *doi*：Crossref中收录的出版物的数字对象标识符（DOI）； *type*：Crossref标注的出版物类型； *cited_by*：根据COCI统计的该出版物所获得的开放引用数量； *non_open*：根据Crossref与COCI统计的该出版物所获得的非开放引用数量。 **croci_types.csv：** 该CSV文件包含前文所述Crossref数据集转储中各实体的开放引用与非开放引用数量，并根据从Crossref提取的实体类型将其划分为五类：*期刊（journal）*（对应Crossref类型：journal-article、journal-issue、journal-volume、journal）、*图书（book）*（对应Crossref类型：book、book-chapter、book-section、monograph、book track、book-part、book-set、reference-book、dissertation、book series、edited book）、*会议论文集（proceedings）*（对应Crossref类型：proceedings-article、proceedings、proceedings-series）、*数据集（dataset）*（对应Crossref类型：dataset）、*其他（other）*（对应Crossref类型：other、report、peer review、reference-entry、component、report-series、standard、posted-content、standard-series）。 该CSV文件包含以下字段： *type*：出版物类型，取值为“journal”“book”“proceedings”“dataset”或“other”； *label*：为可视化需求分配的类型标签； *coci_open_cit*：根据COCI统计的该类型出版物所获得的开放引用数量； *crossref_close_cit*：根据Crossref与COCI统计的该出版物所获得的非开放引用数量。 **publishers_cits.csv：** 该CSV文件收录了获得开放引用数量最多的前20家出版机构。该文件包含以下字段： *publisher*：出版机构名称； *doi_prefix*：该出版机构使用的DOI前缀列表； *coci_open_cit*：根据COCI统计的该出版机构旗下出版物所获得的开放引用数量； *crossref_close_cit*：根据Crossref与COCI统计的该出版机构旗下出版物所获得的非开放引用数量； *total_cit*：该出版机构旗下出版物所获得的总引用数量（= *coci_open_cit* + *crossref_close_cit*）。 **20publishers_cr.csv：** 该CSV文件根据Crossref API获取的数据，统计了前文所述20家出版机构截至2018年1月24日的开放引用贡献情况。本文件中的统计值指各出版机构向Crossref提交的、包含参考文献列表的出版物数量。其中“closed（非开放）”“limited（受限）”与“open（开放）”三类分别指代：参考文献列表仅对Crossref Cited-by会员可见、仅对该出版机构及Crossref Metadata Plus会员可见、对所有用户可见的出版物。此外，该文件还统计了该出版机构向Crossref提交元数据的所有出版物总数，无论这些元数据是否包含出版物的参考文献列表。 该CSV文件包含以下字段： *publisher*：出版机构名称； *open*：Crossref中参考文献列表开放可见的出版物数量； *limited*：Crossref中参考文献列表受限可见的出版物数量； *closed*：Crossref中参考文献列表非开放可见的出版物数量； *overall_deposited*：该出版机构向Crossref提交元数据的出版物总数。