Model-independent determination of cosmic curvature based on Pad\'{e}
  approximation
  Given observations of the standard candles and the cosmic chronometers, we
apply Pad\'{e} parameterization to the comoving distance and the Hubble
paramter to find how stringent the constraint is set to the curvature parameter
by the data. A weak informative prior is introduced in the modeling process to
keep the inference away from the singularities. Bayesian evidence for different
order of Pad\'{e} parameterizations is evaluated during the inference to select
the most suitable parameterization in light of the data. The data we used
prefer a parameterization form of comoving distance as $D_{01}(z)=\frac{a_0
z}{1+b_1 z}$ as well as a competitive form $D_{02}(z)=\frac{a_0 z}{1+b_1 z +
b_2 z^2}$. Similar constraints on the spatial curvature parameter are
established by those models and given the Hubble constant as a byproduct:
$\Omega_k = 0.25^{+0.14}_{-0.13}$ (68\% confidence level [C.L.]), $H_0 = 67.7
\pm 2.0$ km/s/Mpc (68\% C.L.) for $D_{01}$, and $\Omega_k = -0.01 \pm 0.13$
(68\% C.L.), $H_0 = 68.8 \pm 2.0$ km/s/Mpc (68\% C.L.) for $D_{02}$. The
evidence of different models demonstrates the qualitative analysis of the
Pad\'{e} parameterizations for the comoving distance.
