1. A method for indexing information, comprising the steps of: processing a query having a phrase corresponding to concatenation of adjacent portions of the information; generating an index entry for the phrase; processing the query to identify one or more locations at which the phrase occurs within the information; and measuring an amount of time required to process the query to identify the one or more locations; wherein the index entry for the phrase is generated if the measured time exceeds a threshold.
1. A method for indexing information, comprising the steps of: processing a query having a phrase corresponding to concatenation of adjacent portions of the information; generating an index entry for the phrase; processing the query to identify one or more locations at which the phrase occurs within the information; and measuring an amount of time required to process the query to identify the one or more locations; wherein the index entry for the phrase is generated if the measured time exceeds a threshold. 3. A method according to claim 1, wherein the index entry includes a metaword.