wordEncoding

Модель кодирования Word, чтобы сопоставить слова с индексами и назад

Описание

Слово, кодирующее слова карт в словаре в числовые индексы.

Чтобы закодировать документы как матрицы слова или количеств n-граммы, использовать encode.

Создание

Описание

пример

enc = wordEncoding(documents) создает кодирование слова из слов в documents.

пример

enc = wordEncoding(words) создает кодирование слова из массива слов.

пример

enc = wordEncoding(documents,Name,Value) задает дополнительные опции с помощью одного или нескольких аргументов пары "имя-значение". Например, 'Order','frequency' присвоения понижают индексы к более частым словам.

Входные параметры

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Введите документы в виде tokenizedDocument массив.

Введите слова в виде вектора строки, вектора символов или массива ячеек из символьных векторов. Если вы задаете words как вектор символов, затем функция обрабатывает аргумент как отдельное слово.

Типы данных: string | char | cell

Аргументы в виде пар имя-значение

Задайте дополнительные разделенные запятой пары Name,Value аргументы. Name имя аргумента и Value соответствующее значение. Name должен появиться в кавычках. Вы можете задать несколько аргументов в виде пар имен и значений в любом порядке, например: Name1, Value1, ..., NameN, ValueN.

Пример: 'Order','frequency' сортирует индексы по общей частоте в документах в порядке убывания.

Сортировка индексов в виде разделенной запятой пары, состоящей из 'Order' и одно из следующего:

  • 'first-seen' – Присвойте индексы словам в порядке, в котором они происходят в документах.

  • 'frequency' – Присвойте индексы словам, отсортированным по общей частоте в документах в порядке убывания.

Если 'Order' 'frequency' и несколько слов имеют ту же частоту, затем функция не присваивает индексы ни в каком конкретном порядке.

Максимальное количество слов, чтобы закодировать в виде положительного целого числа или Inf. Функциональные первые виды индексы согласно 'Order' опция и затем кодирует главный MaxNumWords слова. Если MaxNumWords isinf, затем функция кодирует все слова во входных документах.

Свойства

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Количество слов в модели в виде неотрицательного целого числа.

Уникальные слова в модели в виде вектора строки.

Типы данных: string

Функции объекта

ind2wordСопоставьте индекс кодирования со словом
word2indСопоставьте слово с кодированием индекса
isVocabularyWordПротестируйте, если слово является членом встраивания слова или кодирования

Примеры

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Загрузите данные в качестве примера. Файл sonnetsPreprocessed.txt содержит предварительно обработанные версии сонетов Шекспира. Файл содержит один сонет на строку со словами, разделенными пробелом. Извлеките текст из sonnetsPreprocessed.txt, разделите текст в документы в символах новой строки, и затем маркируйте документы.

filename = "sonnetsPreprocessed.txt";
str = extractFileText(filename);
textData = split(str,newline);
documents = tokenizedDocument(textData);
documents(1:10)
ans = 
  10x1 tokenizedDocument:

    70 tokens: fairest creatures desire increase thereby beautys rose might never die riper time decease tender heir might bear memory thou contracted thine own bright eyes feedst thy lights flame selfsubstantial fuel making famine abundance lies thy self thy foe thy sweet self cruel thou art worlds fresh ornament herald gaudy spring thine own bud buriest thy content tender churl makst waste niggarding pity world else glutton eat worlds due grave thee
    71 tokens: forty winters shall besiege thy brow dig deep trenches thy beautys field thy youths proud livery gazed tatterd weed small worth held asked thy beauty lies treasure thy lusty days say thine own deep sunken eyes alleating shame thriftless praise praise deservd thy beautys thou couldst answer fair child mine shall sum count make old excuse proving beauty succession thine new made thou art old thy blood warm thou feelst cold
    65 tokens: look thy glass tell face thou viewest time face form another whose fresh repair thou renewest thou dost beguile world unbless mother fair whose uneard womb disdains tillage thy husbandry fond tomb selflove stop posterity thou art thy mothers glass thee calls back lovely april prime thou windows thine age shalt despite wrinkles thy golden time thou live rememberd die single thine image dies thee
    71 tokens: unthrifty loveliness why dost thou spend upon thy self thy beautys legacy natures bequest gives nothing doth lend frank lends free beauteous niggard why dost thou abuse bounteous largess thee give profitless usurer why dost thou great sum sums yet canst live traffic thy self alone thou thy self thy sweet self dost deceive nature calls thee gone acceptable audit canst thou leave thy unused beauty tombed thee lives th executor
    61 tokens: hours gentle work frame lovely gaze every eye doth dwell play tyrants same unfair fairly doth excel neverresting time leads summer hideous winter confounds sap checked frost lusty leaves quite gone beauty oersnowed bareness every summers distillation left liquid prisoner pent walls glass beautys effect beauty bereft nor nor remembrance flowers distilld though winter meet leese show substance still lives sweet
    68 tokens: let winters ragged hand deface thee thy summer ere thou distilld make sweet vial treasure thou place beautys treasure ere selfkilld forbidden usury happies pay willing loan thats thy self breed another thee ten times happier ten ten times thy self happier thou art ten thine ten times refigurd thee death thou shouldst depart leaving thee living posterity selfwilld thou art fair deaths conquest make worms thine heir
    64 tokens: lo orient gracious light lifts up burning head eye doth homage newappearing sight serving looks sacred majesty climbd steepup heavenly hill resembling strong youth middle age yet mortal looks adore beauty still attending golden pilgrimage highmost pitch weary car like feeble age reeleth day eyes fore duteous converted low tract look another way thou thyself outgoing thy noon unlookd diest unless thou get son
    70 tokens: music hear why hearst thou music sadly sweets sweets war joy delights joy why lovst thou thou receivst gladly else receivst pleasure thine annoy true concord welltuned sounds unions married offend thine ear sweetly chide thee confounds singleness parts thou shouldst bear mark string sweet husband another strikes mutual ordering resembling sire child happy mother pleasing note sing whose speechless song many seeming sings thee thou single wilt prove none
    70 tokens: fear wet widows eye thou consumst thy self single life ah thou issueless shalt hap die world wail thee like makeless wife world thy widow still weep thou form thee hast left behind every private widow well keep childrens eyes husbands shape mind look unthrift world doth spend shifts place still world enjoys beautys waste hath world end kept unused user destroys love toward others bosom sits murdrous shame commits
    69 tokens: shame deny thou bearst love thy self art unprovident grant thou wilt thou art belovd many thou none lovst evident thou art possessd murderous hate gainst thy self thou stickst conspire seeking beauteous roof ruinate repair thy chief desire o change thy thought change mind shall hate fairer lodgd gentle love thy presence gracious kind thyself least kindhearted prove make thee another self love beauty still live thine thee

Создайте кодирование слова.

enc = wordEncoding(documents)
enc = 
  wordEncoding with properties:

      NumWords: 3092
    Vocabulary: [1x3092 string]

Чтобы создать кодирование слова из встраивания слова, введите словарь встраивания слова к wordEncoding функционируйте как список слов.

Загрузите предварительно обученное встраивание слова.

emb = fastTextWordEmbedding;

Извлеките словарь.

words = emb.Vocabulary;

Создайте кодирование слова с помощью словаря.

enc = wordEncoding(words)
enc = 
  wordEncoding with properties:

      NumWords: 999994
    Vocabulary: [1×999994 string]

Чтобы инициализировать соответствующий слой встраивания слова в нейронной сети для глубокого обучения с весами встраивания слова, используйте word2vec функционируйте, чтобы извлечь веса слоя и установить 'Weights' пара "имя-значение" wordEmbeddingLayer функция. Слой встраивания слова ожидает столбцы векторов слова, таким образом, необходимо будет транспонировать выход word2vec функция.

dimension = emb.Dimension;
numWords = numel(words);

layer = wordEmbeddingLayer(dimension,numWords, ...
    'Weights',word2vec(emb,words)')
layer = 
  WordEmbeddingLayer with properties:

         Name: ''

   Hyperparameters
    Dimension: 300
     NumWords: 999994

   Learnable Parameters
      Weights: [300×999994 single]

  Show all properties

Загрузите данные в качестве примера. Файл sonnetsPreprocessed.txt содержит предварительно обработанные версии сонетов Шекспира. Файл содержит один сонет на строку со словами, разделенными пробелом. Извлеките текст из sonnetsPreprocessed.txt, разделите текст в документы в символах новой строки, и затем маркируйте документы.

filename = "sonnetsPreprocessed.txt";
str = extractFileText(filename);
textData = split(str,newline);
documents = tokenizedDocument(textData);
documents(1:10)
ans = 
  10x1 tokenizedDocument:

    70 tokens: fairest creatures desire increase thereby beautys rose might never die riper time decease tender heir might bear memory thou contracted thine own bright eyes feedst thy lights flame selfsubstantial fuel making famine abundance lies thy self thy foe thy sweet self cruel thou art worlds fresh ornament herald gaudy spring thine own bud buriest thy content tender churl makst waste niggarding pity world else glutton eat worlds due grave thee
    71 tokens: forty winters shall besiege thy brow dig deep trenches thy beautys field thy youths proud livery gazed tatterd weed small worth held asked thy beauty lies treasure thy lusty days say thine own deep sunken eyes alleating shame thriftless praise praise deservd thy beautys thou couldst answer fair child mine shall sum count make old excuse proving beauty succession thine new made thou art old thy blood warm thou feelst cold
    65 tokens: look thy glass tell face thou viewest time face form another whose fresh repair thou renewest thou dost beguile world unbless mother fair whose uneard womb disdains tillage thy husbandry fond tomb selflove stop posterity thou art thy mothers glass thee calls back lovely april prime thou windows thine age shalt despite wrinkles thy golden time thou live rememberd die single thine image dies thee
    71 tokens: unthrifty loveliness why dost thou spend upon thy self thy beautys legacy natures bequest gives nothing doth lend frank lends free beauteous niggard why dost thou abuse bounteous largess thee give profitless usurer why dost thou great sum sums yet canst live traffic thy self alone thou thy self thy sweet self dost deceive nature calls thee gone acceptable audit canst thou leave thy unused beauty tombed thee lives th executor
    61 tokens: hours gentle work frame lovely gaze every eye doth dwell play tyrants same unfair fairly doth excel neverresting time leads summer hideous winter confounds sap checked frost lusty leaves quite gone beauty oersnowed bareness every summers distillation left liquid prisoner pent walls glass beautys effect beauty bereft nor nor remembrance flowers distilld though winter meet leese show substance still lives sweet
    68 tokens: let winters ragged hand deface thee thy summer ere thou distilld make sweet vial treasure thou place beautys treasure ere selfkilld forbidden usury happies pay willing loan thats thy self breed another thee ten times happier ten ten times thy self happier thou art ten thine ten times refigurd thee death thou shouldst depart leaving thee living posterity selfwilld thou art fair deaths conquest make worms thine heir
    64 tokens: lo orient gracious light lifts up burning head eye doth homage newappearing sight serving looks sacred majesty climbd steepup heavenly hill resembling strong youth middle age yet mortal looks adore beauty still attending golden pilgrimage highmost pitch weary car like feeble age reeleth day eyes fore duteous converted low tract look another way thou thyself outgoing thy noon unlookd diest unless thou get son
    70 tokens: music hear why hearst thou music sadly sweets sweets war joy delights joy why lovst thou thou receivst gladly else receivst pleasure thine annoy true concord welltuned sounds unions married offend thine ear sweetly chide thee confounds singleness parts thou shouldst bear mark string sweet husband another strikes mutual ordering resembling sire child happy mother pleasing note sing whose speechless song many seeming sings thee thou single wilt prove none
    70 tokens: fear wet widows eye thou consumst thy self single life ah thou issueless shalt hap die world wail thee like makeless wife world thy widow still weep thou form thee hast left behind every private widow well keep childrens eyes husbands shape mind look unthrift world doth spend shifts place still world enjoys beautys waste hath world end kept unused user destroys love toward others bosom sits murdrous shame commits
    69 tokens: shame deny thou bearst love thy self art unprovident grant thou wilt thou art belovd many thou none lovst evident thou art possessd murderous hate gainst thy self thou stickst conspire seeking beauteous roof ruinate repair thy chief desire o change thy thought change mind shall hate fairer lodgd gentle love thy presence gracious kind thyself least kindhearted prove make thee another self love beauty still live thine thee

Создайте кодирование слова. Сортировка индексов частотой и кодирует только лучшие 100 слов.

enc = wordEncoding(documents, ...
    'Order','frequency', ...
    'MaxNumWords',100)
enc = 
  wordEncoding with properties:

      NumWords: 100
    Vocabulary: [1x100 string]

Просмотрите слова, соответствующие индексам 1, 2 и 3 использованиям ind2word функция.

idx = [1 2 3];
words = ind2word(enc,idx)
words = 1x3 string
    "thy"    "thou"    "love"

Загрузите данные в качестве примера. Файл sonnetsPreprocessed.txt содержит предварительно обработанные версии сонетов Шекспира. Файл содержит один сонет на строку со словами, разделенными пробелом. Извлеките текст из sonnetsPreprocessed.txt, разделите текст в документы в символах новой строки, и затем маркируйте документы.

filename = "sonnetsPreprocessed.txt";
str = extractFileText(filename);
textData = split(str,newline);
documents = tokenizedDocument(textData);
documents(1:10)
ans = 
  10x1 tokenizedDocument:

    70 tokens: fairest creatures desire increase thereby beautys rose might never die riper time decease tender heir might bear memory thou contracted thine own bright eyes feedst thy lights flame selfsubstantial fuel making famine abundance lies thy self thy foe thy sweet self cruel thou art worlds fresh ornament herald gaudy spring thine own bud buriest thy content tender churl makst waste niggarding pity world else glutton eat worlds due grave thee
    71 tokens: forty winters shall besiege thy brow dig deep trenches thy beautys field thy youths proud livery gazed tatterd weed small worth held asked thy beauty lies treasure thy lusty days say thine own deep sunken eyes alleating shame thriftless praise praise deservd thy beautys thou couldst answer fair child mine shall sum count make old excuse proving beauty succession thine new made thou art old thy blood warm thou feelst cold
    65 tokens: look thy glass tell face thou viewest time face form another whose fresh repair thou renewest thou dost beguile world unbless mother fair whose uneard womb disdains tillage thy husbandry fond tomb selflove stop posterity thou art thy mothers glass thee calls back lovely april prime thou windows thine age shalt despite wrinkles thy golden time thou live rememberd die single thine image dies thee
    71 tokens: unthrifty loveliness why dost thou spend upon thy self thy beautys legacy natures bequest gives nothing doth lend frank lends free beauteous niggard why dost thou abuse bounteous largess thee give profitless usurer why dost thou great sum sums yet canst live traffic thy self alone thou thy self thy sweet self dost deceive nature calls thee gone acceptable audit canst thou leave thy unused beauty tombed thee lives th executor
    61 tokens: hours gentle work frame lovely gaze every eye doth dwell play tyrants same unfair fairly doth excel neverresting time leads summer hideous winter confounds sap checked frost lusty leaves quite gone beauty oersnowed bareness every summers distillation left liquid prisoner pent walls glass beautys effect beauty bereft nor nor remembrance flowers distilld though winter meet leese show substance still lives sweet
    68 tokens: let winters ragged hand deface thee thy summer ere thou distilld make sweet vial treasure thou place beautys treasure ere selfkilld forbidden usury happies pay willing loan thats thy self breed another thee ten times happier ten ten times thy self happier thou art ten thine ten times refigurd thee death thou shouldst depart leaving thee living posterity selfwilld thou art fair deaths conquest make worms thine heir
    64 tokens: lo orient gracious light lifts up burning head eye doth homage newappearing sight serving looks sacred majesty climbd steepup heavenly hill resembling strong youth middle age yet mortal looks adore beauty still attending golden pilgrimage highmost pitch weary car like feeble age reeleth day eyes fore duteous converted low tract look another way thou thyself outgoing thy noon unlookd diest unless thou get son
    70 tokens: music hear why hearst thou music sadly sweets sweets war joy delights joy why lovst thou thou receivst gladly else receivst pleasure thine annoy true concord welltuned sounds unions married offend thine ear sweetly chide thee confounds singleness parts thou shouldst bear mark string sweet husband another strikes mutual ordering resembling sire child happy mother pleasing note sing whose speechless song many seeming sings thee thou single wilt prove none
    70 tokens: fear wet widows eye thou consumst thy self single life ah thou issueless shalt hap die world wail thee like makeless wife world thy widow still weep thou form thee hast left behind every private widow well keep childrens eyes husbands shape mind look unthrift world doth spend shifts place still world enjoys beautys waste hath world end kept unused user destroys love toward others bosom sits murdrous shame commits
    69 tokens: shame deny thou bearst love thy self art unprovident grant thou wilt thou art belovd many thou none lovst evident thou art possessd murderous hate gainst thy self thou stickst conspire seeking beauteous roof ruinate repair thy chief desire o change thy thought change mind shall hate fairer lodgd gentle love thy presence gracious kind thyself least kindhearted prove make thee another self love beauty still live thine thee

Создайте кодирование слова.

enc = wordEncoding(documents)
enc = 
  wordEncoding with properties:

      NumWords: 3092
    Vocabulary: [1x3092 string]

Просмотрите слова, соответствующие индексам 1, 3 и 5 использованиям ind2word функция.

idx = [1 3 5];
words = ind2word(enc,idx)
words = 1x3 string
    "fairest"    "desire"    "thereby"

Загрузите данные в качестве примера. Файл sonnetsPreprocessed.txt содержит предварительно обработанные версии сонетов Шекспира. Файл содержит один сонет на строку со словами, разделенными пробелом. Извлеките текст из sonnetsPreprocessed.txt, разделите текст в документы в символах новой строки, и затем маркируйте документы.

filename = "sonnetsPreprocessed.txt";
str = extractFileText(filename);
textData = split(str,newline);
documents = tokenizedDocument(textData);
documents(1:10)
ans = 
  10x1 tokenizedDocument:

    70 tokens: fairest creatures desire increase thereby beautys rose might never die riper time decease tender heir might bear memory thou contracted thine own bright eyes feedst thy lights flame selfsubstantial fuel making famine abundance lies thy self thy foe thy sweet self cruel thou art worlds fresh ornament herald gaudy spring thine own bud buriest thy content tender churl makst waste niggarding pity world else glutton eat worlds due grave thee
    71 tokens: forty winters shall besiege thy brow dig deep trenches thy beautys field thy youths proud livery gazed tatterd weed small worth held asked thy beauty lies treasure thy lusty days say thine own deep sunken eyes alleating shame thriftless praise praise deservd thy beautys thou couldst answer fair child mine shall sum count make old excuse proving beauty succession thine new made thou art old thy blood warm thou feelst cold
    65 tokens: look thy glass tell face thou viewest time face form another whose fresh repair thou renewest thou dost beguile world unbless mother fair whose uneard womb disdains tillage thy husbandry fond tomb selflove stop posterity thou art thy mothers glass thee calls back lovely april prime thou windows thine age shalt despite wrinkles thy golden time thou live rememberd die single thine image dies thee
    71 tokens: unthrifty loveliness why dost thou spend upon thy self thy beautys legacy natures bequest gives nothing doth lend frank lends free beauteous niggard why dost thou abuse bounteous largess thee give profitless usurer why dost thou great sum sums yet canst live traffic thy self alone thou thy self thy sweet self dost deceive nature calls thee gone acceptable audit canst thou leave thy unused beauty tombed thee lives th executor
    61 tokens: hours gentle work frame lovely gaze every eye doth dwell play tyrants same unfair fairly doth excel neverresting time leads summer hideous winter confounds sap checked frost lusty leaves quite gone beauty oersnowed bareness every summers distillation left liquid prisoner pent walls glass beautys effect beauty bereft nor nor remembrance flowers distilld though winter meet leese show substance still lives sweet
    68 tokens: let winters ragged hand deface thee thy summer ere thou distilld make sweet vial treasure thou place beautys treasure ere selfkilld forbidden usury happies pay willing loan thats thy self breed another thee ten times happier ten ten times thy self happier thou art ten thine ten times refigurd thee death thou shouldst depart leaving thee living posterity selfwilld thou art fair deaths conquest make worms thine heir
    64 tokens: lo orient gracious light lifts up burning head eye doth homage newappearing sight serving looks sacred majesty climbd steepup heavenly hill resembling strong youth middle age yet mortal looks adore beauty still attending golden pilgrimage highmost pitch weary car like feeble age reeleth day eyes fore duteous converted low tract look another way thou thyself outgoing thy noon unlookd diest unless thou get son
    70 tokens: music hear why hearst thou music sadly sweets sweets war joy delights joy why lovst thou thou receivst gladly else receivst pleasure thine annoy true concord welltuned sounds unions married offend thine ear sweetly chide thee confounds singleness parts thou shouldst bear mark string sweet husband another strikes mutual ordering resembling sire child happy mother pleasing note sing whose speechless song many seeming sings thee thou single wilt prove none
    70 tokens: fear wet widows eye thou consumst thy self single life ah thou issueless shalt hap die world wail thee like makeless wife world thy widow still weep thou form thee hast left behind every private widow well keep childrens eyes husbands shape mind look unthrift world doth spend shifts place still world enjoys beautys waste hath world end kept unused user destroys love toward others bosom sits murdrous shame commits
    69 tokens: shame deny thou bearst love thy self art unprovident grant thou wilt thou art belovd many thou none lovst evident thou art possessd murderous hate gainst thy self thou stickst conspire seeking beauteous roof ruinate repair thy chief desire o change thy thought change mind shall hate fairer lodgd gentle love thy presence gracious kind thyself least kindhearted prove make thee another self love beauty still live thine thee

Создайте кодирование слова.

enc = wordEncoding(documents)
enc = 
  wordEncoding with properties:

      NumWords: 3092
    Vocabulary: [1x3092 string]

Карта слова "повысилась", "любовь" и "красота" к кодированию индексов с помощью word2ind функция.

words = ["rose" "love" "beauty"];
idx = word2ind(enc,words)
idx = 1×3

     7   387    79

Загрузите данные об отчетах фабрики и создайте tokenizedDocument массив.

filename = "factoryReports.csv";
data = readtable(filename,'TextType','string');
textData = data.Description;
documents = tokenizedDocument(textData);

Создайте кодирование слова.

enc = wordEncoding(documents);

Преобразуйте документы последовательностям словарей.

sequences = doc2sequence(enc,documents);

Просмотрите размеры первых 10 последовательностей. Каждая последовательность является 1 S вектором, где S является количеством словарей в последовательности. Поскольку последовательности дополнены, S является постоянным.

sequences(1:10)
ans=10×1 cell array
    {[           0 0 0 0 0 0 0 1 2 3 4 5 6 7 8 9 10]}
    {[  0 0 0 0 0 0 11 12 13 14 15 2 16 17 18 19 10]}
    {[    0 0 0 0 0 0 20 2 21 22 7 23 24 25 7 26 10]}
    {[        0 0 0 0 0 0 0 0 0 0 0 27 28 6 7 18 10]}
    {[        0 0 0 0 0 0 0 0 0 0 0 0 29 30 7 31 10]}
    {[    0 0 0 0 0 0 0 32 33 6 7 34 35 36 37 38 10]}
    {[      0 0 0 0 0 0 0 0 0 39 40 36 41 6 7 42 10]}
    {[    0 0 0 0 0 0 0 0 43 44 22 45 46 47 7 48 10]}
    {[      0 0 0 0 0 0 0 0 0 0 49 50 17 7 51 48 10]}
    {[0 0 0 0 52 8 53 36 54 55 56 57 58 59 22 60 10]}

Введенный в R2018b
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