Create Sparse CP ALS Proof of concept

[ntjohnson1]

• [ ] Sparse Tensor Methods
  • [x] ndims
  • [x] norm
  • [x] shape slice
  • [ ] mttkrp (partial implementation that only takes in factors, but not full ktensor)
    • [ ] ttv (needed for mttkrp)
      • [ ] Might require rust version of accumarray from numpy groupies or workaround
  • [ ] innerprod
    • [ ] find
  • [ ] CP ALS
  • [ ] Update Args Struct to handle Sparse and Dense tensors (potentially via traits/generics)

[ntjohnson1]

An option to define a variety of tensor traits then per algorithm can name the required combination https://stackoverflow.com/questions/26983355/is-there-a-way-to-combine-multiple-traits-in-order-to-define-a-new-trait