core
| GetTermInfo | |
| HighFreqTerms | HighFreqTerms class extracts the top n most frequent terms
(by document frequency ) from an existing Lucene index and reports their
document frequency. |
| IndexMergeTool | Merges indices specified on the command line into the index specified as the first command line argument. |
| SweetSpotSimilarity | A similarity with a lengthNorm that provides for a "plateau" of equally good lengths, and tf helper functions. |