Product definition data, environment definition data and action regulation are building on a unified simulation model structure and can effectively support VPD.

将产品定义数据、环境定义数据及两者之间的作用规律建立在统一的仿真模型结构之上，能够有效地支持虚拟产品开发。

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The online-ad industry has agreed to what amounts to a "Do Not Target" definition, which would still allow data to be collected for purposes such as market research and product development.

WSJ: FTC Urges Congress to Pass Digital-Privacy Law