我有以下數據：partial_x_train_features = [ [b'south pago pago victor mclaglen jon hall frances farmer olympe bradna gene lockhart douglass dumbrille francis ford ben welden abner biberman pedro cordoba rudy robles bobby stone nellie duran james flavin nina campana alfred e green treasure hunt adventure adventure'], [b'easy virtue jessica biel ben barnes kristin scott thomas colin firth kimberley nixon katherine parkinson kris marshall christian brassington charlotte riley jim mcmanus pip torrens jeremy hooton joanna bacon maggie hickey georgie glen stephan elliott young englishman marry glamorous american brings home meet parent arrive like blast future blow entrenched british stuffiness window comedy romance'], [b'fragments antonin gregori derangere anouk grinberg aurelien recoing niels arestrup yann collette laure duthilleul david assaraf pascal demolon jean baptiste iera richard sammel vincent crouzet fred epaud pascal elso nicolas giraud michael abiteboul gabriel le bomin psychiatrist probe mind traumatized soldier attempt unlock secret drove gentle deeply disturbed world war veteran edge insanity drama war'], [b'milka film taboos milka elokuva tabuista irma huntus leena suomu matti turunen eikka lehtonen esa niemela sirkka metsasaari tauno lehtihalmes ulla tapaninen toivo tuomainen hellin auvinen salmi rauni mollberg small finnish lapland community milka innocent year old girl live mother miss dead father prays god love haymaking employ drama'], [b'sleeping car david naughton judie aronson kevin mccarthy jeff conaway dani minnick ernestine mercer john carl buechler gary brockette steve lundquist billy stevenson michael scott bicknell david coburn nicole hansen tiffany million robert ruth douglas curtis jason david naughton move abandon train car resurrect vicious ghost landlady dead husband mister near fatal encounter comedy horror']]我知道演員不是大小相同的數組，但搜索幾個類似的問題（即question1，question2）無法解決我的問題。如果您想復制該問題，也請關注我的colab notebook ，如果我遺漏了任何重復的問題，請在評論中寫下。
2 回答
長風秋雁
TA貢獻1757條經驗 獲得超7個贊
您需要將這些字符串轉換為向量，并將它們填充為相等的長度。我將向您展示一個示例partial_x_train_actors_array：
import tensorflow as tf
partial_x_train_actors_array = [b'victor mclaglen', b'jon hall', b'frances farmer',
b'olympe bradna', b'gene lockhart', b'douglass dumbrille',
b'francis ford', b'ben welden', b'abner biberman',
b'pedro de cordoba', b'rudy robles', b'bobby stone',
b'nellie duran', b'james flavin', b'nina campana']
tok = tf.keras.preprocessing.text.Tokenizer(char_level=True)
tok.fit_on_texts(partial_x_train_actors_array)
seq = tok.texts_to_sequences(partial_x_train_actors_array)
這seq看起來像：
[[20, 10, 11, 16, 7, 4, 5, 12, 11, 6, 1, 17, 6, 2, 3],
[21, 7, 3, 5, 22, 1, 6, 6],
[14, 4, 1, 3, 11, 2, 13, 5, 14, 1, 4, 12, 2, 4],
[7, 6, 18, 12, 19, 2, 5, 8, 4, 1, 9, 3, 1],
[17, 2, 3, 2, 5, 6, 7, 11, 28, 22, 1, 4, 16],
[9, 7, 15, 17, 6, 1, 13, 13, 5, 9, 15, 12, 8, 4, 10, 6, 6, 2],
[14, 4, 1, 3, 11, 10, 13, 5, 14, 7, 4, 9],
[8, 2, 3, 5, 29, 2, 6, 9, 2, 3],
[1, 8, 3, 2, 4, 5, 8, 10, 8, 2, 4, 12, 1, 3],
[19, 2, 9, 4, 7, 5, 9, 2, 5, 11, 7, 4, 9, 7, 8, 1],
[4, 15, 9, 18, 5, 4, 7, 8, 6, 2, 13],
[8, 7, 8, 8, 18, 5, 13, 16, 7, 3, 2],
[3, 2, 6, 6, 10, 2, 5, 9, 15, 4, 1, 3],
[21, 1, 12, 2, 13, 5, 14, 6, 1, 20, 10, 3],
[3, 10, 3, 1, 5, 11, 1, 12, 19, 1, 3, 1]]
然后，將序列填充為等長：
padded = tf.keras.preprocessing.sequence.pad_sequences(seq)
array([[ 0, 0, 0, 20, 10, 11, 16, 7, 4, 5, 12, 11, 6, 1, 17, 6, 2, 3],
[ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 21, 7, 3, 5, 22, 1, 6, 6],
[ 0, 0, 0, 0, 14, 4, 1, 3, 11, 2, 13, 5, 14, 1, 4, 12, 2, 4],
[ 0, 0, 0, 0, 0, 7, 6, 18, 12, 19, 2, 5, 8, 4, 1, 9, 3, 1],
[ 0, 0, 0, 0, 0, 17, 2, 3, 2, 5, 6, 7, 11, 28, 22, 1, 4, 16],
[ 9, 7, 15, 17, 6, 1, 13, 13, 5, 9, 15, 12, 8, 4, 10, 6, 6, 2],
[ 0, 0, 0, 0, 0, 0, 14, 4, 1, 3, 11, 10, 13, 5, 14, 7, 4, 9],
[ 0, 0, 0, 0, 0, 0, 0, 0, 8, 2, 3, 5, 29, 2, 6, 9, 2, 3],
[ 0, 0, 0, 0, 1, 8, 3, 2, 4, 5, 8, 10, 8, 2, 4, 12, 1, 3],
[ 0, 0, 19, 2, 9, 4, 7, 5, 9, 2, 5, 11, 7, 4, 9, 7, 8, 1],
[ 0, 0, 0, 0, 0, 0, 0, 4, 15, 9, 18, 5, 4, 7, 8, 6, 2, 13],
[ 0, 0, 0, 0, 0, 0, 0, 8, 7, 8, 8, 18, 5, 13, 16, 7, 3, 2],
[ 0, 0, 0, 0, 0, 0, 3, 2, 6, 6, 10, 2, 5, 9, 15, 4, 1, 3],
[ 0, 0, 0, 0, 0, 0, 21, 1, 12, 2, 13, 5, 14, 6, 1, 20, 10, 3],
[ 0, 0, 0, 0, 0, 0, 3, 10, 3, 1, 5, 11, 1, 12, 19, 1, 3, 1]])
最后：
ds = tf.data.Dataset.from_tensor_slices(padded)
next(iter(ds))
<tf.Tensor: shape=(18,), dtype=int32, numpy=
array([ 0, 0, 0, 20, 10, 11, 16, 7, 4, 5, 12, 11, 6, 1, 17, 6, 2,
3])>
如果出于任何原因，您需要所有輸入（不僅僅是partial_x_train_actors_array）具有相同的填充形狀，您可以使用該maxlen參數。
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