The RAdial Velocity Experiment (RAVE): Fourth data release
  We present the stellar atmospheric parameters (effective temperature, surface
gravity, overall metallicity), radial velocities, individual abundances and
distances determined for 425 561 stars, which constitute the fourth public data
release of the RAdial Velocity Experiment (RAVE). The stellar atmospheric
parameters are computed using a new pipeline, based on the algorithms of
MATISSE and DEGAS. The spectral degeneracies and the 2MASS photometric
information are now better taken into consideration, improving the parameter
determination compared to the previous RAVE data releases. The individual
abundances for six elements (magnesium, aluminum, silicon, titanium, iron and
nickel) are also given, based on a special-purpose pipeline which is also
improved compared to that available for the RAVE DR3 and Chemical DR1 data
releases. Together with photometric information and proper motions, these data
can be retrieved from the RAVE collaboration website and the Vizier database.
