LAMOST DR1: Stellar parameters and chemical abundances with SP_Ace
  We present a new analysis of the LAMOST DR1 survey spectral database
performed with the code SP_Ace, which provides the derived stellar parameters
T$_{\rm eff}$, log (g), [Fe/H], and [$\alpha$/Fe] for 1,097,231 stellar
objects. We tested the reliability of our results by comparing them to
reference results from high spectral resolution surveys. The expected errors
can be summarized as $\sim$120 K in T$_{\rm eff}$, $\sim$0.2 in log (g),
$\sim$0.15 dex in [Fe/H], and $\sim$0.1 dex in [$\alpha$/Fe] for spectra with
S/N$>$40, with some differences between dwarf and giant stars. SP_Ace provides
error estimations consistent with the discrepancies observed between derived
and reference parameters. Some systematic errors are identified and discussed.
The resulting catalog is publicly available at the LAMOST and CDS websites.
