Spaces:
Build error
Build error
File size: 760 Bytes
b93970c |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 |
import torch
import torch.nn.functional as F
from collections import defaultdict
def make_positions(tensor, padding_idx):
"""Replace non-padding symbols with their position numbers.
Position numbers begin at padding_idx+1. Padding symbols are ignored.
"""
# The series of casts and type-conversions here are carefully
# balanced to both work with ONNX export and XLA. In particular XLA
# prefers ints, cumsum defaults to output longs, and ONNX doesn't know
# how to handle the dtype kwarg in cumsum.
mask = tensor.ne(padding_idx).int()
return (
torch.cumsum(mask, dim=1).type_as(mask) * mask
).long() + padding_idx
def softmax(x, dim):
return F.softmax(x, dim=dim, dtype=torch.float32)
|