| 摘要 |
Methods, including a computer program product for collecting metrics for determining content presentation quality are provided. An application executing on a mobile device requests and receives virtual content for presentation on the mobile device. The application logs focus duration information associated with presented content and transmits the focus duration information to a virtual content server in subsequent requests for virtual content. The virtual content server aggregates the content focus duration information received in the requests for virtual content, and provides quality metrics to virtual content providers based in part on the aggregated focus duration information.
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