折痕有多脆？被试对网络浏览知觉的主观研究
How Crisp is the Crease? A Subjective Study on Web Browsing Perception of Above-The-Fold
摘要：
近年来，各种类型网站的体验质量（QoE）受到了极大的关注。为了设计和评估网站，一个度量，可以估计用户的体验质量鲁棒不同的内容是必要的。速度指数（SI）已被广泛采用，以估计感知网页加载进度。它测量浏览器窗口中可见的网页的渲染像素的速度。这被称为折叠折叠（ATF）。动画内容对ATF感知的影响还没有得到全面的研究。在本文中，我们提出了一个实验设计和方法来衡量ATF的感知网站和动画元素的各种页面内容类别。我们发现，网页与动画元素导致人们有更多不同的看法ATF在不同的网络条件下。动画内容也会影响网站SI的页面负载估计准确性。我们讨论了ATF的感知差异将如何影响Web应用程序的QoE管理。我们解释了重新访问ATF的视觉评估的必要性，包括动画内容，并提高SI等指标的鲁棒性。
英文摘要：
Quality of Experience (QoE) for various types of websites has gained significant attention in recent years. In order to design and evaluate websites, a metric that can estimate a user's experienced quality robustly for diverse content is necessary. SpeedIndex (SI) has been widely adopted to estimate perceived web page loading progress. It measures the speed of rendering pixels for the webpage that is visible in the browser window. This is termed Above-The-Fold (ATF). The influence of animated content on the perception of ATF has been less comprehensively explored. In this paper, we present an experimental design and methodology to measure ATF perception for websites with and without animated elements for various page content categories. We found that pages with animated elements caused people to have more varied perceptions of ATF under different network conditions. Animated content also impacts the page load estimation accuracy of SI for websites. We discuss how the difference in the perception of ATF will impact the QoE management of web applications. We explain the necessity of revisiting the visual assessment of ATF to include the animated contents and improve the robustness of metrics like SI.
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