pinv_frule

tenferro_linalg

Function pinv_frule 

Source 
pub fn pinv_frule<T, C>(
    ctx: &mut C,
    tensor: &Tensor<T>,
    tangent: &Tensor<T>,
    rcond: Option<f64>,
) -> AdResult<(Tensor<T>, Tensor<T>)>
where
    T: KernelLinalgScalar + ScaleTensorByRealSameShape<C> + Conjugate,
    C: TensorLinalgContextFor<T> + TensorResolveConjContextFor<T> + TensorScalarContextFor<Standard<T::Real>>,
    C::Backend: 'static,
    T::Real: KeepCountScalar,
Expand description

Forward-mode AD rule for pseudoinverse (JVP / pushforward).

ยงExamples

use tenferro_linalg::pinv_frule;
use tenferro_prims::CpuContext;
use tenferro_tensor::{Tensor, MemoryOrder};
use tenferro_device::LogicalMemorySpace;

let col = MemoryOrder::ColumnMajor;
let mem = LogicalMemorySpace::MainMemory;
let mut ctx = CpuContext::new(1);
let a = Tensor::<f64>::zeros(&[3, 4], mem, col).unwrap();
let da = Tensor::<f64>::ones(&[3, 4], mem, col).unwrap();
let (pinv_a, dpinv_a) = pinv_frule(&mut ctx, &a, &da, None).unwrap();