Why the loc_elevation is not updated in the env?

airsplay / R2R-EnvDrop

PyTorch Code of NAACL 2019 paper "Learning to Navigate Unseen Environments: Back Translation with Environmental Dropout"

MIT License

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Why the loc_elevation is not updated in the env? #23

Open ZuoJiaxing opened 4 years ago

ZuoJiaxing commented 4 years ago

https://github.com/airsplay/R2R-EnvDrop/blob/c416108e1f713a5fea2e2bda887ab22080fb3cd1/r2r_src/env.py#L265

I'm curious about why the elevation of the navigable candidates is not updated as the heading, such as: loc_heading = normalized_heading - base_heading loc_elevation = normalized_elevation - base_elevation

airsplay commented 4 years ago

The normalization guarantees that the location is related to the current "front" view. In the paper of Speaker-Follower Models for Vision-and-Language Navigation, the "front" view is always set with elevation=0. We follow the practice here.