  Fully-coherent all-sky search for gravitational wave (GW) signals from the
coalescence of compact object binaries is a computationally expensive task.
Approximations, such as semi-coherent coincidence searches, are currently used
to circumvent the computational barrier with a concomitant loss in sensitivity.
We explore the effectiveness of Particle Swarm Optimization (PSO) in addressing
this problem. Our results, using a simulated network of detectors with initial
LIGO design sensitivities and a realistic signal strength, show that PSO can
successfully deliver a fully-coherent all-sky search with < 1/10 the number of
likelihood evaluations needed for a grid-based search.
