https://lucene.apache.org/core/8_9_0/core/org/apache/lucene/search/similarities/LambdaDF.html
LambdaDF (Lucene 8.9.0 API)
luceneapi
https://lucene.apache.org/core/5_3_0/core/org/apache/lucene/search/similarities/LambdaDF.html?is-external=true
LambdaDF (Lucene 5.3.0 API)
luceneapi
https://lucene.apache.org/core/6_2_1/core/org/apache/lucene/search/similarities/class-use/LambdaDF.html
Uses of Class org.apache.lucene.search.similarities.LambdaDF (Lucene 6.2.1 API)
https://lucene.apache.org/core/5_4_0/core/org/apache/lucene/search/similarities/LambdaDF.html
LambdaDF (Lucene 5.4.0 API)
luceneapi