  We present a unified description of gravitational-wave data analysis that
unites the template-based analysis used to detect deterministic signals from
well-modeled sources, such as binary-black-hole mergers, with the
cross-correlation analysis used to detect stochastic gravitational-wave
backgrounds. We also discuss the connection between template-based analyses and
those that target poorly-modeled bursts of gravitational waves, and suggest a
new approach for detecting burst signals.
