Factorisation of a multi-way array (tensor) into a sum or product of simpler tensors. Two canonical families: CP/PARAFAC (T = Σ_r λ_r a_r ⊗ b_r ⊗ c_r) and Tucker (T = Σ_{ijk} g_{ijk} u_i ⊗ v_j ⊗ w_k). Generalises matrix SVD to higher…
Factorisation of a multi-way array (tensor) into a sum or product of simpler tensors. Two canonical families: CP/PARAFAC (T = Σ_r λ_r a_r ⊗ b_r ⊗ c_r) and Tucker (T = Σ_{ijk} g_{ijk} u_i ⊗ v_j ⊗ w_k). Generalises matrix SVD to higher…