Binom Rank by Date

Description

Rank objects binomially depending on a date property of theirs (the distance between two dates is measured in number of days).

Input

  • SOURCE [OBJ]: the list of objects to rank

Output

  • INCREASING [OBJ]: ranked objects using the specified ranking curve with increasing monotonicity (i.e., the rank tends towards 1 on the right side of the tipping point and towards 0 on the left).
  • DECREASING [OBJ]: ranked objects using the specified ranking curve with decreasing monotonicity (i.e., the rank tends towards 0 on the right side of the tipping point and towards 1 on the left). For most cases, this is just the complement of INCREASING with the exception of the Heaviside function.

Parameters

  • Property: the date property to use for the binomial ranking
  • Use sub-properties: when set to true, the values of all sub properties are also included. Sub-properties can be defined in the data with the rdfs:subPropertyOf relation.
  • Ranking curve: the binomial ranking curve (a.k.a. activation function) to be used. Possible options are Sigmoid (logistic function), Heaviside (step function), Arctan, Softsign and Piecewise Linear. All of these are scaled such that the resulting ranks lie between 0 and 1.
  • Tipping Point: for Sigmoid, Arctan, Softsign and Piecewise Linear, this is the point where the ranking curve attains 0.5. For Heaviside, this is the point where the curve jumps from 0 to 1.
  • Slope: Specifies the slope at the tipping point. The higher the slope, the steeper the curve. For Heaviside, this is interpreted as the value at the tipping point.