To Search or to Crawl - Toward a Query Optimizer for Text-Centri...

To Search or to Crawl? Towards a Query Optimizer for Text-Centric TasksPanagiotis G. Ipeirotis New York Universitypanos@nyu.eduEugene Agichtein Microsoft Researcheugeneag@microsoft.comPranay Jain Columbia Universitypranay.jain@columbia.eduLuis Gravano Columbia Universitygravano@cs.columbia.eduABSTRACT Text is ubiquitous and, not surprisingly, many important applications rely on textual data for a variety of tasks. As a notable example, in- formation extraction applications derive structured rela