public class BasicModelBE extends BasicModelLimiting form of the Bose-Einstein model. The formula used in Lucene differs slightly from the one in the original paper:
Fis increased by
Nis increased by
- WARNING: This API is experimental and might change in incompatible ways in the next release.
- NOTE: in some corner cases this model may give poor performance or infinite scores with
Normalizations that return large or small values for
tfnsuch as NormalizationH3. Consider using the geometric approximation (
BasicModelG) instead, which provides the same relevance but with less practical problems.
Constructors Constructor Description
BasicModelBE()Sole constructor: parameter-free
All Methods Instance Methods Concrete Methods Modifier and Type Method Description
score(BasicStats stats, float tfn)Returns the informative content score.
toString()Subclasses must override this method to return the code of the basic model formula.
public final float score(BasicStats stats, float tfn)Description copied from class:
BasicModelReturns the informative content score.