| ArabicStemmerParameter | Arabic Stemmer Parameters |
| ClusterParam | A package of cluster parameter definitions and loading procedures General cluster-related parameters |
| CORIParameter | |
| CosSimParameter | Parameters used in the CosSim retrieval method |
| DistMergeMethodParameter | |
| InQueryParameter | Parameters used in the InQuery structured query retrieval method |
| LocalParameter | Application specific parameters |
| MultiRegrMergeMethodParameter | |
| OkapiParameter | Okapi retrieval model parameter namespace |
| PLSAParam | A package of PLSA parameter definitions and loading procedures General PLSA related parameters |
| QBSParameter | Parameters for query-based samping |
| RetrievalParameter | A package of retrieval parameter definitions and loading procedures General retrieval-related parameters |
| SimpleKLParameter | Simple KL divergence retrieval model parameters |
| SingleRegrMergeMethodParameter | |
| std | |
| TFIDFParameter | Parameters used in the TFIDF retrieval method |
| XLingParameter | Cross lingual retrieval model parameters |
1.2.18