Source code for gluonts.torch.modules.lookup_table
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# Licensed under the Apache License, Version 2.0 (the "License").
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# http://www.apache.org/licenses/LICENSE-2.0
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import torch
import torch.nn as nn
from gluonts.core.component import validated
[docs]class LookupValues(nn.Module):
"""
A lookup table mapping bin indices to values.
Parameters
----------
bin_values
Tensor of bin values with shape (num_bins, ).
"""
@validated()
def __init__(self, bin_values: torch.Tensor):
super().__init__()
self.register_buffer("bin_values", bin_values)
[docs] def forward(self, indices: torch.Tensor) -> torch.Tensor:
assert isinstance(self.bin_values, torch.Tensor)
indices = torch.clamp(indices, 0, self.bin_values.shape[0] - 1)
return torch.index_select(
self.bin_values, 0, indices.reshape(-1)
).view_as(indices)