Patent attributes
A system comprising: at least one hardware processor; and a non-transitory computer-readable storage medium having stored thereon program instructions, the program instructions executable by the at least one hardware processor to: receive a data stream representing events; receive a plurality of complex event patterns (CEPs) comprising (a) a set of conditions reflecting relations among said events, and (b) a set of attributes associated with each of said events; and calculate an optimal multi-pattern evaluation plan corresponding to said CEPs by: (i) generating an initial evaluation plan, (ii) applying a search method to calculate modified versions of said initial evaluation plan, (iii) assigning a score to each of said modified versions based on a cost function, and (iv) selecting one of said modified versions having a highest said score as said optimal multi-pattern evaluation plan.
