Features

Add:

• depth_measured - (some medium of the input itself)

---

• depth_measured: the depth measured by the crew
• DATA_TYPE: multi-beam, single beam, nautical chart, grid
• YEAR: Year the survey was conducted
• INST_SHIP: Which ship was used (when known)
• predicted_depth: the predicted depth with the gravity model
• depth_measured minus predicted_depth
• d10: average depth of the sea floor in the 10km grid
• d20: average depth of the sea floor in the 20km grid
• d60: average depth of the sea floor in the 60km grid
• curv: Vertical gravity gradient V27.1
• age: Age of the oceanic plate
• rate: Plate half-spreading rate
• sed: Sediment thickness (From Crust 1.0)
• rough: Seafloor roughness
• regional_depth: Long wavelength regional depth

Following features are based on the aggregations of the sea floor depth over a fixed-size grid:

• depth minus MEDIAN_in_5km_blocks
• STD_in_5km_blocks
• NUM_in_5km_blocks
• depth minus MEDIAN_in_10km_blocks
• STD_in_10km_blocks
• NUM_in_10km_blocks
• depth minus MEDIAN_in_20km_blocks
• STD_in_20km_blocks
• NUM_in_20km_blocks
• depth minus MEDIAN_in_60km_blocks
• STD_in_60km_blocks
• NUM_in_60km_blocks

Removed Features

Following features will be removed from training:

• lon: longitude
• lat: latitude
• sigh
• id
• SID: use only for partitioning data. Specifically, the data points from each SID will either be used for training or testing, but not both.