National Incident-Based Reporting System, 2005: Extract Files

The National Incident-Based Reporting System (NIBRS) is a part of the Uniform Crime Reporting Program (UCR), administered by the Federal Bureau of Investigation (FBI). The extract files version of NIBRS is an attempt to simplify working with NIBRS data. Data management issues with NIBRS are significant, especially when two or more segment levels are being merged. These issues require skills separate from data analysis. NIBRS data as formatted by the FBI are stored in a single file. These data are organized by various segment levels (record types). There are six main segment levels: administrative, offense, property, victim, offender, and arrestee. Each segment level has a different length and layout. There are other segment levels that occur with less frequency than the six main levels. Significant computing resources are necessary to work with the data in its single-file format. In addition, the user must be sophisticated in working with data in complex file types. For these reasons and the desire to facilitate the use of NIBRS data, ICPSR created the extract files. The data are not a representative sample of crime in the United States.

国家事件基于报告系统（NIBRS）是统一犯罪报告计划（UCR）的一部分，由联邦调查局（FBI）负责管理。NIBRS的提取文件版本旨在简化对该系统数据的处理。NIBRS在数据管理方面存在重大问题，尤其是在合并两个或多个数据段级时尤为显著。这些问题需要与数据分析技能相区别的技能。由FBI格式化的NIBRS数据存储在单个文件中，并按照不同的数据段级（记录类型）进行组织。主要包含六个数据段级：行政、罪行、财产、受害者、犯罪者和被逮捕者。每个数据段级具有不同的长度和布局。还有其他出现频率低于六个主要数据段级的数据段级。处理这些数据的单文件格式需要大量的计算资源。此外，用户在处理复杂文件类型的数据时必须具备复杂的技能。基于这些原因以及对促进NIBRS数据使用的愿望，国家犯罪犯罪数据交换中心（ICPSR）创建了提取文件。这些数据并非美国犯罪的代表性样本。