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Diffstat (limited to 'docs/user-guide/07-autodiff.md')
| -rw-r--r-- | docs/user-guide/07-autodiff.md | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/docs/user-guide/07-autodiff.md b/docs/user-guide/07-autodiff.md index 9fc5205e7..0664d2499 100644 --- a/docs/user-guide/07-autodiff.md +++ b/docs/user-guide/07-autodiff.md @@ -501,7 +501,7 @@ The following built-in functions are backward differentiable and both their forw ## Primal Substitute Functions -Sometimes it is desirable to replace a function with another when generating forward or backward derivative propagation code. For example, the following code shows a function that computes the integral of some term by sampling and we want to use a different sampling stragegy when computing the derivatives. +Sometimes it is desirable to replace a function with another when generating forward or backward derivative propagation code. For example, the following code shows a function that computes the integral of some term by sampling and we want to use a different sampling strategy when computing the derivatives. ```csharp float myTerm(float x) { @@ -535,7 +535,7 @@ float getSampleForDerivativeComputation(float a, float b) Here, the `[PrimalSubstituteOf(getSample)]` attributes marks the `getSampleForDerivativeComputation` function as the substitute for `getSample` in derivative propagation functions. When a function has a primal substitute, the compiler will treat all calls to that function as if it is a call to the substitute function when generating derivative code. Note that this only applies to compiler generated derivative function and does not affect user provided derivative functions. If a user provided derivative function calls `getSample`, it will not be replaced by `getSampleForDerivativeComputation` by the compiler. -Similar to `[ForwardDerivative]` and `[ForwardDerivativeOf]` attributes, The `[PrimalSubsitute(substFunc)]` attribute works the other way around: it specifies the primal substitute function of the function being marked. +Similar to `[ForwardDerivative]` and `[ForwardDerivativeOf]` attributes, The `[PrimalSubstitute(substFunc)]` attribute works the other way around: it specifies the primal substitute function of the function being marked. Primal substitute can be used as another way to make a function differentiable. A function is considered differentiable if it has a primal substitute that is differentiable. The following code illustrates this mechanism. ```csharp |