| Name | Description | Type | Package | Framework |
| AfterEffect | This class acts as the base class for the implementations of the first normalization of the informative content in the DFR framework. | Class | org.apache.lucene.search.similarities | Apache Lucene |
| AfterEffect .NoAfterEffect | Class | org.apache.lucene.search.similarities.AfterEffect | Apache Lucene | |
| AfterEffectB | Model of the information gain based on the ratio of two Bernoulli processes. | Class | org.apache.lucene.search.similarities | Apache Lucene |
| AfterEffectL | Model of the information gain based on Laplace's law of succession. | Class | org.apache.lucene.search.similarities | Apache Lucene |