Revisiting the Cosmological Constraints on the Interacting Dark Energy
  Models
  In this work, we consider the cosmological constraints on the interacting
dark energy models. We generalize the models considered previously by Guo {\it
et al.}, Costa and Alcaniz, and try to discuss two general types of models:
type I models are characterized by $\rho_{_X}/\rho_m=f(a)$ and $f(a)$ can be
any function of scale factor $a$, whereas type II models are characterized by
$\rho_m=\rho_{m0}\,a^{-3+\epsilon(a)}$ and $\epsilon(a)$ can be any function of
$a$. We obtain the cosmological constraints on the type I and II models with
power-law, CPL-like, logarithmic $f(a)$ and $\epsilon(a)$ by using the latest
observational data.
