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Measuring precision of modeled behavior

机译：测量建模行为的精度

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摘要

Conformance checking techniques compare observed behavior (i.e., event logs) with modeled behavior for a variety of reasons. For example, discrepancies between a normative process model and recorded behavior may point to fraud or inefficiencies. The resulting diagnostics can be used for auditing and compliance management. Conformance checking can also be used to judge a process model automatically discovered from an event log. Models discovered using different process discovery techniques need to be compared objectively. These examples illustrate just a few of the many use cases for aligning observed and modeled behavior. Thus far, most conformance checking techniques focused on replay fitness, i.e., the ability to reproduce the event log. However, it is easy to construct models that allow for lots of behavior (including the observed behavior) without being precise. In this paper, we propose a method to measure precision of process models, given their event logs by first aligning the logs to the models. This way, the measurement is not sensitive to non-fitting executions and more accurate values can be obtained for non-fitting logs. Furthermore, we introduce several variants of the technique to deal better with incomplete logs and reduce possible bias due to behavioral property of process models. The approach has been implemented in the ProM 6 framework and tested against both artificial and real-life cases. Experiments show that the approach is robust to noise and applicable to handle logs and models of real-life complexity.
机译：一致性检查技术出于各种原因将观察到的行为（即事件日志）与建模行为进行比较。例如，规范过程模型与记录的行为之间的差异可能表示欺诈或效率低下。产生的诊断信息可用于审核和合规性管理。一致性检查还可用于判断从事件日志中自动发现的过程模型。需要客观地比较使用不同过程发现技术发现的模型。这些示例仅说明了许多使观察到的行为和建模行为保持一致的用例。迄今为止，大多数一致性检查技术都集中在重放适应性上，即，重现事件日志的能力。但是，很容易构造允许很多行为（包括观察到的行为）而又不精确的模型。在本文中，我们提出了一种方法来测量过程模型的精度，给定它们的事件日志，方法是首先将日志与模型对齐。这样，测量对非拟合执行不敏感，并且可以为非拟合日志获得更准确的值。此外，我们介绍了该技术的多种变体，以更好地处理不完整的日志并减少由于流程模型的行为特性而可能产生的偏差。该方法已在ProM 6框架中实施，并已针对实际案例和实际案例进行了测试。实验表明，该方法对噪声具有鲁棒性，适用于处理现实生活中的日志和模型。

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