Evaluation of different blocking strategies in probabilistic record linkage
Evaluation of different blocking strategies in probabilistic record linkage
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DOI：
10.1590/s1415-790x2002000200006
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发表时间：
2002-08-01
影响因子：
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通讯作者：
Camargo Jr., Kenneth Rochel de
中科院分区：
文献类型：
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作者：
Coeli, Cláudia Medina;Camargo Jr., Kenneth Rochel de
分块，即在要链接的文件中创建逻辑记录块，是在概率链接大型数据库的过程中必须采取的步骤之一。本文的目的是比较不同的阻塞策略和研究的有效性，我们已经开发的标准化算法，它使用相同的拼写相似的发音的第一个音节的名字。我们将一个包含59,065份死亡报告信息的死亡率数据库与一个包含531条记录的医院死亡报告数据库联系起来，这些记录在更大的数据库中有相应的条目。比较了不同阻塞策略的处理成本和丢失真匹配的比例。多步骤分块策略更有效，允许识别所有真正的匹配，同时产生的配对总数小于使用两种不同的单步策略获得的配对总数。在一步战略中，使用名字和性别的声音索引代码组合生成的键取得了最好的效果。利用算法，拼写发音相似的名字的第一个音节的拼写没有产生显着的效果，无论是在成本和减少损失的真正的比赛。
Blocking, that is, the creation of logical record blocks within the files to be linked, is one of the steps that have to be taken in the process of probabilistically linking large databases. This paper is aimed at comparing different blocking strategies and studying the effectiveness of a standardizing algorithm that we have developed, which uses the same spelling for similarly sounding first syllables of names. We linked a mortality database with information on 59,065 death reports with a hospital death report database with 531 records, which had corresponding entries in the larger database. Different blocking strategies were compared with regards to processing cost and the proportion of lost true matches. The multiple steps blocking strategy was more effective, allowing the identification of all the true matches, at the same time producing a total number of pairs which was smaller than the one obtained with the use of two different single-step strategies. Among the single-step strategies, the best result was achieved with the utilization of a key produced by a combination of the soundex codes of the first name and sex. The utilization of the algorithm that standardizes the spelling of similarly sounding first syllables of names produced no remarkable effects, both in terms of cost and reduction of the loss of true matches.