MoveSplitMerge (jaicore-ml 0.1.6 API)

java.lang.Object
- ai.libs.jaicore.ml.tsc.distances.MoveSplitMerge

All Implemented Interfaces:

ITimeSeriesDistance
```
public class MoveSplitMerge
extends java.lang.Object
implements ITimeSeriesDistance
```
Implementation of the Move-Split-Merge (MSM) measure as published in "The Move-Split-Merge Metric for Time Series" by Alexandra Stefan, Vassilis Athitsos and Gautam Das (2013). The idea behind the MSM metric is to define a set of operations that can be used to transform any time series into any other.
- A Move operation changes the value of a single point of the time series.
- A Split operation splits a single point of the time series into two consecutive points that have the same value as the original point.
- A Merge operation merges two consecutive points that have the same value int a single point that has that value.
Each operation has an associated cost. The cost for a Move for x to y is |x-y|. The cost for a Split and Merge is defined by a constant c. Let S = (s_1, s_2, .., s_n) be a sequence of Move/Split/Merge operations with s_i either Move, Split or a Merge. The Move-Split-Merge distance between to time series A and B is defined be the cost of the lowest-cost transformation S*, such that transform(S*, A) = B.

- Constructor Summary
  
  Constructors
  Constructor Description
  
  MoveSplitMerge(double c)
  Constructor.
- Method Summary
  
  All Methods Instance Methods Concrete Methods
  Modifier and Type Method Description
  
  double distance(double[] a, double[] b)
  Calculates the distance between two time series.
  - Methods inherited from class java.lang.Object
    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - MoveSplitMerge
```
public MoveSplitMerge(double c)
```
    Constructor.
    
    Parameters:
    
    c - The constant cost for Split and Merge operations.
- Method Detail
  - distance
```
public double distance(double[] a,
                       double[] b)
```
    Description copied from interface: ITimeSeriesDistance
    
    Calculates the distance between two time series.
    
    Specified by:
    
    distance in interface ITimeSeriesDistance
    
    Parameters:
    
    a - First time series.
    
    b - Second time series.
    
    Returns:
    
    Distance between the first and second time series.