Matrix-Profile

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Issues when trying to update ND4J depenency to 1.0.0-M2.1

1

Hi Enzosos, I am trying to use your library in a Project for tuning an particle ion source (similar to what is show here: [Ion Source Optimization Using Bi-Objective Genetic...

wolfig

Offset of buffer can not be >= Integer.MAX_VALUE

1

Hello. Working with a TimeSeries of size 50.000, I got the next error message (Exception): > Exception in thread "main" java.lang.IllegalArgumentException: Offset of buffer can not be >= Integer.MAX_VALUE >...

mactsouk

Exception in thread `main`

4

When trying to use `getMPdistance()`, I get the following error: ``` Exception in thread "main" java.lang.NoSuchMethodError: 'org.nd4j.linalg.api.ndarray.INDArray org.nd4j.linalg.factory.Nd4j.zeros(long, long)' at io.github.ensozos.core.MPdistance.getMassDistMatrix(MPdistance.java:116) at io.github.ensozos.core.MPdistance.getMPdistance(MPdistance.java:52) at Main.Main.main(Main.java:29) ``` I suppose it is...

mactsouk

based on https://www.cs.ucr.edu/~eamonn/Motif_Discovery_ICDM.pdf

barrybecker4

How avoid NaN and Infinity values in the distance profile?

6

While adding more tests, I noticed that there are a number of cases where the distance part of the matrix profile can have Infinity and NaN values. One simple example...

barrybecker4

There are a few minor enhancements that I would like to make. I will submit a PR shortly.

barrybecker4

MatrixProfile.stamp does not give deterministic results for self-join case

2

For the versions of stamp and stmp that take a query parameter, I see that the results are the same between them. However for the self-join case (no query provided),...

barrybecker4

Replace MASS v2 with MASS v3

3

@ensozos, From you comment in #11, we should speed up the execution of MPdistance by replacing MASS v2 with MASS v3 algorithm. Do you have a reference for it?

barrybecker4