Personalized adaptation technology has been adopted in a wide range of digital applications such as health, training and education, e-commerce and entertainment. Personalization systems typically build a user model, aiming to characterize the user at hand, and then use this model to personalize the interaction. Personalization and user modeling, however, are often intrinsically at odds with each other (a fact some times referred to as the personalization paradox). In this paper, we take a closer look at this personalization paradox, and identify two ways in which it might manifest: feedback loops and moving targets. To illustrate these issues, we report results in the domain of personalized exergames (videogames for physical exercise), and describe our early steps to address some of the issues arisen by the personalization paradox.

中文翻译：

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个性化悖论：准确的用户模型与个性化的自适应系统之间的冲突

个性化的适应技术已被广泛用于健康，培训和教育，电子商务和娱乐等数字应用中。个性化系统通常会构建一个用户模型，旨在表征手边的用户，然后使用该模型来个性化交互。但是，个性化和用户建模通常在本质上是相互矛盾的（事实有时称为个性化悖论）。在本文中，我们仔细研究了这种个性化悖论，并确定了它可能表现出的两种方式：反馈回路和移动目标。为了说明这些问题，我们在个性化exergames（用于体育锻炼的视频游戏）领域报告结果，并描述我们为解决因个性化悖论而引起的某些问题的早期步骤。