A Cause and Effect Analysis of Motion Trajectories for Modeling Actions (2014, background): “Changing the delay parameter for smaller model orders did not affect the performance while for larger order values the performance degraded with increase in delay due to the decrease in number of equations for computing prediction matrices.”
Action Recognition with Actons (2013, background): “, which are computed on the local 3D patches extracted by spatial-temporal interesting point (STIP) detectors [11] or dense sampling strategies [27, 24].”
A Critical Review of Action Recognition Benchmarks (2013, methodology): “Curiously, despite being saturated and despite their simplistic settings, these benchmarks are still frequently used today, with recent examples including [13] on the Weizmann set and [34] on KTH.”