OpenNMT-tf 1.15.0

OpenNMT-tf 1.15.0

New features

• Parameter sampling_topk to sample predictions from the output distribution (from Edunov et al. 2018)

Fixes and improvements

• Checkpoint utilities now save a relative path instead of absolute in the generated checkpoint state
• Fix error on missing configuration fields that should be optional
• Fix error on gradient accumulation in TensorFlow versions <= 1.9
• Fix optimizer variable names mismatch introduced by gradient accumulation which prevented to continue from an existing checkpoint trained without