Comments (7)
- AutoCorrelationFunction: Java version is here
https://github.com/goastler/uea-tsc/blob/master/src/main/java/timeseriesweka/filters/ACF.java
public double[] fitAutoCorrelations(double[] data)
is the actualy implementation, although happy to use an off the shelf one
single parameter is maximum lag, which I think I default to max of 100 or seriesLength/4
Needed for classifier RISE
from sktime.
- FastFourierTransform: FFT
https://github.com/goastler/uea-tsc/blob/master/src/main/java/timeseriesweka/filters/FFT.java
set to either do an FFT or DFT
Classifier: RISE and BOSS
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- PowerSpectrum:
https://github.com/goastler/uea-tsc/blob/master/src/main/java/timeseriesweka/filters/PowerSpectrum.java
public static double[] powerSpectrum(double[] d)
basically take the DFT and square the terms. Issues here are whether to use FFT and padding zeros (O(mlogm, but padding may skew things, especially if the data is not normalised) or use the exact DFT (O(m^2)). Only keep have of the terms, second half of power spectrum is a duplicate of the first
Needed for classifier RISE
from sktime.
- SFA
all of the boss transforms we have are encapsulated within boss. We should probably change this
https://github.com/goastler/uea-tsc/blob/master/src/main/java/timeseriesweka/classifiers/BOSS.java
however, the previously sourced boss implementation can be used here
Needed for classifier BOSS
from sktime.
- Piecewise Aggregate Approximation (PAA)
https://github.com/goastler/uea-tsc/blob/master/src/main/java/timeseriesweka/filters/PAA.java
Simple transform that forms the basis of many others.
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- SAX
composed of PAA then a simple discretisation transform
from sktime.
For available Python implementation, see #6
from sktime.
Related Issues (20)
- [ENH] Tracking issue for `make_reduction` outstanding issues HOT 3
- [DOC] Inconsistency in documented `TimeSeriesForestClassifier` locations, sktime 0.25.0 docs HOT 6
- [ENH] should we merge the `transformations.series` and `panel` contents to root level?
- [ENH] tracking of authors' credit vs maintainer role - how do we do this
- [ENH] upgrade `all_estimators` and `all_tags` to work with lists and object type inheritace HOT 2
- [BUG] Very different behaviour depending on whether make_pipeline is from sktime or sklearn HOT 27
- [BUG] package versions on `binder` are old HOT 1
- [ENH] classifier, transformer pipelines etc should allow access to steps via `steps`, and fitted steps via `steps_`
- [BUG] Possible sktime pipeline issue (unexpected warning) in time-series classification on panel data HOT 6
- [ENH] exposing components of `sklearn` `Pipeline` via `get_fitted_params` HOT 4
- [ENH] Introduction of FallbackForecaster HOT 1
- [ENH] Name change of old `SAX`, `PAA` in favour of new
- [BUG] WindowSummarizer unexpected NaN
- [BUG] `show_versions` is failing with `AttributeError` HOT 9
- [BUG] `SARIMAX` fails when `X` is passed in `predict` but not used in `fit`
- [ENH] Loader for pretrained transformer models from hugging face HOT 5
- [MNT] plan to drop support for python `3.8` HOT 1
- [BUG] "test everything" workflow fails at linting HOT 6
- [BUG] `test_single_dataset_single_strategy_against_sklearn` fails since `sklearn 1.4.0`
- [BUG] Neural Network models don't seem to get trained when using model.fit
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from sktime.