“naturallanguage”)formratherthaninanytypeofstructuredinput,whetherwithBooleanoperatorsorotherwise.Free-textinputgenerallyimpliesbest-matchratherthanexact-matchevaluation.Thisapproachfitswellwithrecentexperiments(Turtle1994),whichconfirmindicationsofmanyyearsearlier(SparckJones1981)thatfree-text-inputbest-matchtext-...
(best of both worlds) – E.g., best-match query language that incorporates exact- match operators exact vs. best match 5 • Advantages of exact match – Can be very efficiently implemented – Predictable, easy to explain – Structured queries for pinpointing precise documents – Work well ...