Merge pull request #439 from alan-turing-institute/dev

For a 0.15.4 release

Project.toml

@@ -1,7 +1,7 @@
 name = "MLJBase"
 uuid = "a7f614a8-145f-11e9-1d2a-a57a1082229d"
 authors = ["Anthony D. Blaom <[email protected]>"]
-version = "0.15.3"
+version = "0.15.4"
 
 [deps]
 CategoricalArrays = "324d7699-5711-5eae-9e2f-1d82baa6b597"

src/machines.jl

@@ -624,8 +624,7 @@ keyword        | values                        | default
 `format`       | `:julia_serialize`, `:BSON`   | `:julia_serialize`
 `compression`  | `:gzip`, `:none`              | `:none`
 
-See (see
-[https://github.com/invenia/JLSO.jl](https://github.com/invenia/JLSO.jl)
+See [https://github.com/invenia/JLSO.jl](https://github.com/invenia/JLSO.jl)
 for details.
 
 Any additional keyword arguments are passed to model-specific

src/measures/continuous.jl

@@ -346,7 +346,10 @@ metadata_measure(LogCosh;
     supports_weights         = false,
     docstring                = "log cosh loss; aliases: `log_cosh`.")
 
-function (log_cosh::LogCosh)(ŷ::Vec{<:Real}, y::Vec{<:Real})
+_softplus(x::T) where T<:Real = x > zero(T) ? x + log1p(exp(-x)) : log1p(exp(x))
+_log_cosh(x::T) where T<:Real = x + _softplus(-2x) - log(convert(T, 2))
+
+function (log_cosh::LogCosh)(ŷ::Vec{<:T}, y::Vec{<:T}) where T <:Real
     check_dimensions(ŷ, y)
-    return log.(cosh.(ŷ-y))
+    return _log_cosh.(ŷ - y)
 end

src/resampling.jl

@@ -1042,7 +1042,7 @@ function MLJBase.update(resampler::Resampler{Holdout},
                           _acceleration,
                           false)
 
-    report = NamedTuple
+    report = NamedTuple()
 
     return fitresult, cache, report