TimeSeriesDelta
Package
weka.filters.unsupervised.attribute
Synopsis
An filter that assumes instances form time-series data and replaces attribute values in the current instance with the difference between the current value and the equivalent attribute attribute value of some previous (or future) instance. For instances where the time-shifted value is unknown either the instance may be dropped, or missing values used. Skips the class attribute if it is set.
Options
The table below describes the options available for TimeSeriesDelta.
Option |
Description |
|---|---|
attributeIndices |
Specify range of attributes to act on. This is a comma separated list of attribute indices, with "first" and "last" valid values. Specify an inclusive range with "-". E.g: "first-3,5,6-10,last". |
fillWithMissing |
For instances at the beginning or end of the dataset where the translated values are not known, use missing values (default is to remove those instances) |
instanceRange |
The number of instances forward/backward to merge values between. A negative number indicates taking values from a past instance. |
invertSelection |
Invert matching sense. ie calculate for all non-specified columns. |
Capabilities
The table below describes the capabilites of TimeSeriesDelta.
Capability |
Supported |
|---|---|
Class |
Nominal class, Date class, Unary class, Empty nominal class, Binary class, String class, Numeric class, No class, Relational class, Missing class values |
Attributes |
Numeric attributes, Nominal attributes, Relational attributes, Binary attributes, Missing values, Date attributes, String attributes, Empty nominal attributes, Unary attributes |
Min # of instances |
0 |