因果估计量和估计
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本部分介绍了 Meridian 如何定义主要的被估量,包括增量效果、投资回报率、边际投资回报率和响应曲线。这些量使用潜在结果和反事实(因果推理领域的用语)进行定义。
有了明确的被估量定义,您就可以查看营销组合建模分析 (MMM) 提供有效推理所需的假设。这些假设有助于确保模型确实能够估计出这些量。如果不满足假设条件,估计结果可能会出现严重偏差。
我们建议您针对任何 MMM 方法明确定义因果被估量和必要假设。否则,模型结果很可能被误解。影响更大的是,如果忽略了必要假设,分析结果可能会因严重的潜在偏差而变得毫无意义。
下一部分中的定义并不依赖于 Meridian 模型规范的任何方面。同样的定义适用于任何 MMM。定义因果被估量对于任何 MMM 分析都至关重要,这样才能使结果具有可解释性,并有助于确定特定模型在何种假设下才适合进行分析。
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最后更新时间 (UTC):2025-01-25。
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