DictionaryExtensions extension

Extensions on DftMapEntry.

on

Properties

terms → List<String>: Returns the dictionary terms (keys) as an ordered list, sorted alphabetically.
no setter

addEntry(DftMapEntry value) → void: Inserts or replaces the value in the DftMap.
getEntries(Iterable<String> terms) → DftMap: Filters the DftMap by terms.
getFrequency(String term) → Ft: Returns the mapped value for the term key from the DftMap.
idFt(String term, int n) → double?: Returns the inverse document frequency of the term for a corpus of size n.
idFtMap(int collectionSize) → Map<String, double>: Returns a hashmap of term to inverse document frequency of the term.
incrementFrequency(String term) → DftMapEntry: Returns a DftMapEntry with the key set to term.
setFrequency(String term, Ft frequency) → DftMapEntry: Returns a DftMapEntry with:
tfIdfMap(Map<String, num> termFrequencies, int n) → Map<String, double>: Returns a hashmap of term to Tf-idf weight for a document.