  Collective intelligence is manifested when multiple agents coherently work in
observation, interaction, decision-making and action. In this paper, we define
and quantify the intelligence level of heterogeneous agents group with the
improved Anytime Universal Intelligence Test(AUIT), based on an extension of
the existing evaluation of homogeneous agents group. The relationship of
intelligence level with agents composition, group size, spatial complexity and
testing time is analyzed. The intelligence level of heterogeneous agents groups
is compared with the homogeneous ones to analyze the effects of heterogeneity
on collective intelligence. Our work will help to understand the essence of
collective intelligence more deeply and reveal the effect of various key
factors on group intelligence level.
