Package com.optimaize.langdetect
Class NgramFrequencyData
- java.lang.Object
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- com.optimaize.langdetect.NgramFrequencyData
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public final class NgramFrequencyData extends Object
Contains frequency information for n-grams coming from multipleLanguageProfile
s.For each n-gram string it knows the locales (languages) in which it occurs, and how frequent it occurs in those languages in relation to other n-grams of the same length in those same languages.
Immutable by definition (can't make Arrays unmodifiable).
- Author:
- Fabian Kessler
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description static @NotNull NgramFrequencyData
create(@NotNull Collection<LanguageProfile> languageProfiles, @NotNull Collection<Integer> gramLengths)
@NotNull LdLocale
getLanguage(int pos)
@NotNull List<LdLocale>
getLanguageList()
@org.jetbrains.annotations.Nullable double[]
getProbabilities(String ngram)
Don't modify this data structure! (Can't make array immutable...)
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Method Detail
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create
@NotNull public static @NotNull NgramFrequencyData create(@NotNull @NotNull Collection<LanguageProfile> languageProfiles, @NotNull @NotNull Collection<Integer> gramLengths) throws IllegalArgumentException
- Parameters:
gramLengths
- for example [1,2,3]- Throws:
IllegalArgumentException
- if languageProfiles or gramLengths is empty, or if one of the languageProfiles does not have the grams of the required sizes.
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getLanguage
@NotNull public @NotNull LdLocale getLanguage(int pos)
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getProbabilities
@Nullable public @org.jetbrains.annotations.Nullable double[] getProbabilities(String ngram)
Don't modify this data structure! (Can't make array immutable...)- Returns:
- null if no language profile knows that ngram.
entries are 0 for languages that don't know that ngram at all.
The array is in the order of the
getLanguageList()
language list, and has exactly that size. impl note: this way the caller can handle it more efficient than returning an empty array.
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