Skip to content

Special-case ReshapeTransform for singleton inputs #699

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 2 commits into from
Oct 25, 2024
Merged

Special-case ReshapeTransform for singleton inputs #699

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
db391a2
Special-case ReshapeTransform for singleton inputs
penelopeysm Oct 25, 2024
8c9cc71
Use fill(x[], ()) instead
penelopeysm Oct 25, 2024
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
2 changes: 1 addition & 1 deletion Project.toml
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
name = "DynamicPPL"
uuid = "366bfd00-2699-11ea-058f-f148b4cae6d8"
version = "0.30.1"
version = "0.30.2"

[deps]
ADTypes = "47edcb42-4c32-4615-8424-f2b9edc5f35b"
Expand Down
11 changes: 9 additions & 2 deletions src/utils.jl
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -286,8 +286,15 @@ function (f::ReshapeTransform)(x)
if size(x) != f.input_size
throw(DimensionMismatch("Expected input of size $(f.input_size), got $(size(x))"))
end
# The call to `tovec` is only needed in case `x` is a scalar.
return reshape(tovec(x), f.output_size)
if f.output_size == ()
# Specially handle the case where x is a singleton array, see
# https://github.com/JuliaDiff/ReverseDiff.jl/issues/265 and
# https://github.com/TuringLang/DynamicPPL.jl/issues/698
return fill(x[], ())
else
# The call to `tovec` is only needed in case `x` is a scalar.
return reshape(tovec(x), f.output_size)
end
end

function (inv_f::Bijectors.Inverse{<:ReshapeTransform})(x)
Expand Down
Loading