Number of iterations needed by NMTF training algorithms to converge (Eq 11, ε = 10−6).
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Symbol ∞ denotes no convergence. MUR, multiplicative update rules; ALS, alternating least squares; PG, projected gradients; COD, coordinate descent. The MUR/COD column shows a speed-up of coordinate descent relative to multiplicative update rules, i.e., the number of iterations of MUR divided by the number of iterations of COD.
创建时间：
2019-06-11
