WEIGHTED KAPPA - NOMINAL SCALE AGREEMENT WITH PROVISION FOR SCALED DISAGREEMENT OR PARTIAL CREDIT
WEIGHTED KAPPA - NOMINAL SCALE AGREEMENT WITH PROVISION FOR SCALED DISAGREEMENT OR PARTIAL CREDIT
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DOI：
10.1037/h0026256
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发表时间：
1968-01-01
影响因子：
22.4
通讯作者：
COHEN, J
中科院分区：
文献类型：
--
作者：
COHEN, J
先前描述的标称尺度的一致性系数Kappa同等对待所有不一致。给出了加权kappa（Kw）的推广。Kw提供了将比率缩放的不一致（或一致）程度并入到联合名义标度分配的k* k表的每个单元格中，使得相应地对不同严重性的不一致（或不同程度的一致）进行加权。虽然提供了部分信贷，千瓦是完全机会纠正。文中给出了它的抽样特性和假设检验及置信限设定的步骤。在一定条件下，Kw等于积矩r。对对称单元格使用不等权重使得Kw适合作为有效性的度量。（PsycInfo数据库记录（c）2016阿帕，保留所有权利）
A previously described coefficient of agreement for nominal scales, kappa, treats all disagreements equally. A generalization to weighted kappa (Kw) is presented. The Kw provides for the incorpation of ratio-scaled degrees of disagreement (or agreement) to each of the cells of the k* k table of joint nominal scale assignments such that disagreements of varying gravity (or agreements of varying degree) are weighted accordingly. Although providing for partial credit, Kw is fully chance corrected. Its sampling characteristics and procedures for hypothesis testing and setting confidence limits are given. Under certain conditions, Kw equals product-moment r. The use of unequal weights for symmetrical cells makes Kw suitable as a measure of validity.(PsycINFO Database Record (c) 2016 APA, all rights reserved)