emd

Sifting condition checking system has been revamped to be more flexible.
New sift conditions added:
- Projections based on functions:
  - Energy Difference function (for Energy Difference Tracking)
  - Mean envelope RMS
- For the above, we can now stop sifting based on:
  - Those projections reaching a certain value
  - Successive values of those projections reaching a certain squared difference (Cauchy-inspired convergence)
- S-Number Criterion
Add test suites

Version 0.1.9.0

October 9, 2019

https://github.com/mstksg/emd/releases/tag/v0.1.9.0

Breaking: hlMags field in HHT v n a now contains n + 1 items, instead of n items. Use V.init to regain the original behavior.
Added hlInitPhase field to HHTLine, to denote the initial phase that an HHT Line starts at.
Added hhtResidual field to HHT, to store the residual of the original EMD.
Add ihht and ihhtEmd, to invert Hilbert-Huang Transform and reconstruct the original series (or the original EMD).
Begin benchmarking hht and ihht.

Version 0.1.8.0

October 4, 2019

https://github.com/mstksg/emd/releases/tag/v0.1.8.0

Add meanMarginal
Fix degreeOfStationarity for divide-by-zero errors.
Add foldFreq for generalized folding on HHT, and rewrote other functions in terms of it.
Drop support for GHC 8.2 and lower.
0.1.8.1: Exported marginal again; it was unexported by mistake.

Version 0.1.7.0

September 24, 2019

https://github.com/mstksg/emd/releases/tag/v0.1.7.0

Rewrite hilbert using the fft library, matching the matlab implementation. This means that the library now depends on fftw.

Version 0.1.6.0

September 24, 2019

https://github.com/mstksg/emd/releases/tag/v0.1.6.0

Add hilbertPhase to Numeric.HHT.

Version 0.1.5.1

September 3, 2019

https://github.com/mstksg/emd/releases/tag/v0.1.5.1

Remove dependency on pure-fft, using statistics instead.

Version 0.1.5.0

August 31, 2019

https://github.com/mstksg/emd/releases/tag/v0.1.5.0

Add NFData instance for EMD, HHTLine, and HTT
Add iemd, inverting emd.

Version 0.1.4.0

August 20, 2018

https://github.com/mstksg/emd/releases/tag/v0.1.4.0

hhtSparseSpectrum added to Numeric.HHT module, for an alternate sparser representation of the Hilbert Spectrum.
hhtDenseSpectrum also added to Numeric.HHT, for an alternative denser representation.
expectedFrequency added to Numeric.HHT module, to calculate weighted average of frequency contributions at each step in time.
dominantFrequency also added to Numeric.HHT to calculate strongest frequency at each step in time.

Version 0.1.3.0

August 15, 2018

https://github.com/mstksg/emd/releases/tag/v0.1.3.0

Default instance for SiftCondition and EMDOpts, as a useful alternative to defaultEO and defaultSC for those who prefer it.
Binary instances for EMD, HHT, and related data types. These are based on Binary instance for v a, so the user must bring the orphan instance of their choice into scope. Not sure if this is the best way to do this.

Version 0.1.2.1

July 27, 2018

https://github.com/mstksg/emd/releases/tag/v0.1.2.1

BUG FIX Fixed behavior of frequency wrapping to wrap between 0 and 1, instead of 0.5, as claimed!

Version 0.1.2.0

July 27, 2018

https://github.com/mstksg/emd/releases/tag/v0.1.2.0

Actually implemented the Hilbert-Huang transform
Allowed for other border handling behaviors during EMD
Changed default stopping conditions for sifting process
Added clamped spline end conditions.
Removed unsized interface
Sifting will now throw runtime exception for singular splining matrices, instead of treating the result as a residual. This might change in the future.

Version 0.1.1.0

July 25, 2018

https://github.com/mstksg/emd/releases/tag/v0.1.1.0

Unsized interface added.

Version 0.1.0.0

July 25, 2018

https://github.com/mstksg/emd/releases/tag/v0.1.0.0

Initial release