The Meridian model health score gives a unified view of model integrity by combining six individual health checks into one metric ranging from 0 to 100. While individual diagnostics provide granular insights into specific model components, the model health score provides an aggregate measure on a model's health for causal inference. See Model health score to learn more.
| Metric check | Status | Recommended action |
|---|---|---|
| Convergence | The model has likely converged, as all parameters have R-hat values < 1.2. | |
| Baseline | The posterior probability that the baseline is negative is 0.00. We recommend visually inspecting the baseline time series in the Model Fit charts to confirm this. | |
| Bayesian p-value | The Bayesian posterior predictive p-value is 1.00. The observed total outcome is consistent with the model's posterior predictive distribution. | |
| Goodness of fit | R-squared = 0.7713, MAPE = 0.0269, and wMAPE = 0.0269. These goodness-of-fit metrics are intended for guidance and relative comparison. | |
| Prior-posterior shift |
5/5 channels passed
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The model has successfully learned from the data. This is a positive sign that your data was informative. |
| Calibration score |
0/5 channels recommended for calibration
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The overall calibration score is 93.5/100. No channels require calibration. |
The Meridian calibration score gives a view of the overall calibration health of your Meridian media and reach & frequency channels. The score combines the number of calibrated channels along with potential channel recommendations for the remaining channels. The calibration score is a factor in your overall model health score in the previous section. See Channel Calibration Recommendation and Score to learn more.
| Category | Overview | Summary |
|---|---|---|
| Prior calibration |
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No prior calibration has been completed using incrementality experiments. |
| Channel recommendation |
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No channels require calibration. |
| Score | High ROI | Low ROI | High Variance ROI | Potential Bias | |
|---|---|---|---|---|---|
| Channel0 |
94.9
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| Channel1 |
92.0
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| Channel2 |
95.1
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| Channel3 |
89.4
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| Channel4 |
96.2
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This plot displays your media and reach and frequency channels according to their spend and ROI. Channels closer to the boundaries of the Implausible High ROI and Implausible Low ROI regions may be strong candidates for calibration. For readability, ROIs between 0.6 and 19 are clustered together on this plot. Please hover over points or use MeridianAnalyzer.roi to view the exact ROI for specific channels.
This plot displays your media and reach and frequency channels according to their spend and Relative Credible Interval (RCI), a measure of their variance. Channels close to the boundary of the High Variance ROI region may be strong candidates for calibration.
This plot displays your media and reach and frequency channels along with their correlation with your available controls.