Learn More
— The web today is increasingly characterized by social and real-time signals, which we believe represent two frontiers in information retrieval. In this paper, we present Earlybird, the core retrieval engine that powers Twitter's real-time search service. Although Earlybird builds and maintains inverted indexes like nearly all modern retrieval engines, its(More)
Various constrained frequent pattern mining problem formulations and associated algorithms have been developed that enable the user to specify various itemset-based constraints that better capture the underlying application requirements and characteristics. In this paper we introduce a new class of <i>block</i> constraints that determine the significance of(More)
  • 1