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arXiv 2302.02706cs.LGcs.HC
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当真值不为真时:在时间注释中模拟人类偏见

When the Ground Truth is not True: Modelling Human Biases in Temporal Annotations

University of Bristol(布里斯托大学)

Taku Yamagata, Emma L. Tonkin, Benjamin Arana Sanchez, Ian Craddock, Miquel Perello Nieto, Raul Santos-Rodriguez, Weisong Yang, Peter Flach

摘要:

在监督学习中,低质量的注释会导致分类和检测模型性能低下,同时也会导致评估不可靠。这在时态数据上尤其明显,其中注释质量受到多种因素的影响。例如,在日常活动的事后自我报告中,认知偏差是最常见的成分之一。特别是,在活动结束后报告活动的开始和持续时间可能会包含个人时间观念带来的偏见,以及由于时间舍入而造成的不精确和缺乏粒度。在这里,我们提出了一种方法来模拟人类的偏见时间注释,并主张使用软标签。在合成数据中的实验结果表明,软标签提供了一个更好的近似的真值的几个指标。我们展示了一个真实的日常活动数据集的方法。

英文摘要:

In supervised learning, low quality annotations lead to poorly performing classification and detection models, while also rendering evaluation unreliable. This is particularly apparent on temporal data, where annotation quality is affected by multiple factors. For example, in the post-hoc self-reporting of daily activities, cognitive biases are one of the most common ingredients. In particular, reporting the start and duration of an activity after its finalisation may incorporate biases introduced by personal time perceptions, as well as the imprecision and lack of granularity due to time rounding. Here we propose a method to model human biases on temporal annotations and argue for the use of soft labels. Experimental results in synthetic data show that soft labels provide a better approximation of the ground truth for several metrics. We showcase the method on a real dataset of daily activities.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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