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Update lempel_ziv.jl with binarization tip #438

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Update lempel_ziv.jl with binarization tip #438

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6 changes: 5 additions & 1 deletion src/complexity_measures/lempel_ziv.jl
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Expand Up @@ -5,7 +5,8 @@ export LempelZiv76
LempelZiv76()

The Lempel-Ziv, or `LempelZiv76`, complexity measure [LempelZiv1976](@cite),
which is used with [`complexity`](@ref) and [`complexity_normalized`](@ref).
which is used with [`complexity`](@ref) and [`complexity_normalized`](@ref)
along with a timeseries/vector input data.

For results to be comparable across sequences with different length, use the normalized
version. Normalized `LempelZiv76`-complexity is implemented as given in [Amigó2004](@citet).
Expand All @@ -18,6 +19,9 @@ two-element alphabet (precisely two distinct outcomes). For performance optimiza
we do not check the number of unique elements in the input. If your input sequence is not
binary, you must [`encode`](@ref) it first using one of the implemented [`Encoding`](@ref)
schemes (or encode your data manually).

A common binarization done on a timeseries is to transform each value to 0 if it is
less than the mean, or 1 if it is higher than the mean.
"""
struct LempelZiv76 <: ComplexityEstimator end

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