首页 馆藏资源 舆情信息 标准服务 科研活动 关于我们
历史 ASTM E1697-05
到馆提醒
收藏跟踪
购买正版
Standard Test Method for Unipolar Magnitude Estimation of Sensory Attributes 感官属性单极性估计的标准测试方法
发布日期: 2005-04-01
1.1本试验方法描述了将单极幅度估计应用于感官属性幅度评估的程序。该测试方法涵盖培训小组成员以产生幅度估计和估计的统计评估的程序。 1.2震级估计是一种心理物理标度技术,其中小组成员为属性的震级指定数值。对小组成员的唯一约束是,分配的值应符合比率原则。例如,如果与样本A相比,样本B中的属性强度似乎是样本A的两倍,则样本B应收到一个值,该值是分配给样本A的值的两倍。 1.3可以使用幅度估计来评估属性的强度,如愉悦度、甜度、咸度或柔软度。 1.4震级估计可能比其他缩放方法具有优势,尤其是当小组成员的数量和可用于训练的时间有限时。通过大约1小时的训练,一个由15到20名未成年人组成的小组可以产生足够精度和再现性的数据。为确保小组成员能够正确识别正在评估的属性而可能需要的任何额外培训都超出了本测试方法的范围。
1.1 This test method describes a procedure for the application of unipolar magnitude estimation to the evaluation of the magnitude of sensory attributes. The test method covers procedures for the training of panelists to produce magnitude estimations and statistical evaluation of the estimations. 1.2 Magnitude estimation is a psychophysical scaling technique in which panelists assign numeric values to the magnitude of an attribute. The only constraint placed upon the panelist is that the values assigned should conform to a ratio principle. For example, if the attribute seems twice as strong in sample B when compared to sample A, sample B should receive a value which is twice the value assigned to sample A. 1.3 The intensity of attributes such as pleasantness, sweetness, saltiness or softness can be evaluated using magnitude estimation. 1.4 Magnitude estimation may provide advantages over other scaling methods, particularly when the number of panelists and the time available for training are limited. With approximately 1 h of training, a panel of 15 to 20 naive individuals can produce data of adequate precision and reproducibility. Any additional training that may be required to ensure that the panelists can properly identify the attribute being evaluated is beyond the scope of this test method.
分类信息
关联关系
研制信息
归口单位: E18.03
相似标准/计划/法规