Statements (22)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
statistical analysis
|
| gptkbp:application |
text classification
document ranking keyword extraction |
| gptkbp:category |
gptkb:machine_learning
data mining text analysis |
| gptkbp:component |
inverse document frequency
term frequency |
| gptkbp:form |
tf-idf(t,d,D) = tf(t,d) * idf(t,D)
|
| gptkbp:fullName |
gptkb:Term_Frequency-Inverse_Document_Frequency
|
| https://www.w3.org/2000/01/rdf-schema#label |
TF-IDF
|
| gptkbp:idfDefinition |
logarithm of total documents divided by number of documents containing term t
|
| gptkbp:introducedIn |
1972
|
| gptkbp:inventedBy |
gptkb:Karen_Spärck_Jones
|
| gptkbp:purpose |
evaluate importance of a word in a document
|
| gptkbp:tfDefinition |
number of times term t appears in document d
|
| gptkbp:usedIn |
information retrieval
natural language processing text mining |
| gptkbp:bfsParent |
gptkb:museum
|
| gptkbp:bfsLayer |
4
|