ArrowHead: Projectile Point

In moviedo5/fda.tsc: Functional Data Sets for Time Series Classification

Description

The arrowhead data consists of outlines of the images of arrowheads.

Usage

data(ArrowHead)

Format

The variables are as follows:

• df: data.frame with the following variables:

  • class: Corresponding class level of “ArrowHead” curves with 3 classes: "Avonlea" (level 1, n=81) , "Clovis" (level 2, n=65) and "Mix" (level 3, n=65).

  • sample:Factor variable. In UCR, the first 36 values (sample=train) are used for training sample and the rest of 175 (sample=test) for testing.

• x: fdata class object with with n=221 curves (per row) observed in 251 discretization points (per column).

Details

The shapes of the projectile points are converted into a time series using the angle-based method. The classes are based on shape distinctions such as the presence and location of a notch in the arrow.

Source

Data source: http://alumni.cs.ucr.edu/~lexiangy/shapelet.html and http://timeseriesclassification.com/description.php?Dataset=ArrowHead

References

Detailed review of the literature on projectile point classification. http://alumni.cs.ucr.edu/~lexiangy/Shapelet/Proj_Point_Review.pdf

moviedo5/fda.tsc documentation built on May 16, 2019, 12:10 a.m.