... follows:(13)(14)(15)(16)Comparing with Equation 2, the LSA factors,and correspond to the factors andof the PLSA model and the mixing propor-tions of the latent classes in PLSA, , corre-spond to the singular values of the ... probability:Relating the term in the PLSA model to the distribution of the LSA term over documents,,and relating the latent class in the PLSA model108 to the LSA right eigenvector , we then estimatefrom ... thanenough to approach the optimal likelihood. The coefficients range from -0.64 to 0.25. The poorcorrelation indicates the need for a method to han-dle the variation in performance due to the influ-ence...