4. The computer program product of claim 1 , the method further comprising categorizing the causal sets, using multiple instance learning and at least partially based on quasi-periodic scores, wherein quasi-periodic scores are produced by measuring repetitiveness of keyframes.
6. The computer program product of claim 4 , wherein categorizing causal sets comprises applying a quasi-periodic version of a multiple instance learning via embedded instance selection analytical technique, wherein a subset of concept class instances is created to correspond to instances in the training set that have high quasi-periodic score.