Add normalization parameters to documentation (#152)

* Add normalization parameters to documentation * Link tag reference Co-authored-by: Wei Ji <[email protected]> * Improve naming in table Co-authored-by: Wei Ji <[email protected]> --------- Co-authored-by: Wei Ji <[email protected]>
Clay-foundation · Feb 27, 2024 · daa5ab0 · daa5ab0
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diff --git a/docs/specification.md b/docs/specification.md
@@ -112,6 +112,26 @@ We store each chip as geotiff, along with their coordinate & timestamp informati
 
 ![bands](https://github.com/Clay-foundation/model/assets/23487320/85fbc8d2-28f6-4021-855b-c1eb84dd09e3)
 
+### Normalization parameters
+
+To normalize the data before passing it to the model, we computed the following normalization parameters from a random sample of the training data. The normalization parameters are used in the [Data Module](https://github.com/Clay-foundation/model/blob/v0.0.1/src/datamodule.py#L108), for partial
+inputs it will be necessary to subset these as shown in the partial input tutorial.
+
+| Band           | Mean    | Standard deviation |
+|----------------|---------|--------------------|
+| Sentinel-2 B02 | 1369.03 | 2026.96            |
+| Sentinel-2 B03 | 1597.68 | 2011.88            |
+| Sentinel-2 B04 | 1741.10 | 2146.35            |
+| Sentinel-2 B05 | 2053.58 | 2138.96            |
+| Sentinel-2 B06 | 2569.82 | 2003.27            |
+| Sentinel-2 B07 | 2763.01 | 1962.45            |
+| Sentinel-2 B08 | 2858.43 | 2016.38            |
+| Sentinel-2 B8A | 2893.86 | 1917.12            |
+| Sentinel-2 B11 | 2303.00 | 1679.88            |
+| Sentinel-2 B12 | 1807.79 | 1568.06            |
+| Sentinel-1 VV  | 0.026   | 0.118              |
+| Sentinel-1 VH  | 0.118   | 0.873              |
+| Copernicus DEM | 499.46  | 880.35             |
 
 ## Training Card