Pads sequences to the same length
Pads sequences to the same length
pad_sequences( sequences, maxlen = NULL, dtype = "int32", padding = "pre", truncating = "pre", value = 0 )
sequences |
List of lists where each element is a sequence |
maxlen |
int, maximum length of all sequences |
dtype |
type of the output sequences |
padding |
'pre' or 'post', pad either before or after each sequence. |
truncating |
'pre' or 'post', remove values from sequences larger than maxlen either in the beginning or in the end of the sequence |
value |
float, padding value |
This function transforms a list of num_samples sequences (lists
of integers) into a matrix of shape (num_samples, num_timesteps).
num_timesteps is either the maxlen argument if provided, or the length
of the longest sequence otherwise.
Sequences that are shorter than num_timesteps are padded with value at
the end.
Sequences longer than num_timesteps are truncated so that they fit the
desired length. The position where padding or truncation happens is
determined by the arguments padding and truncating, respectively.
Pre-padding is the default.
Matrix with dimensions (number_of_sequences, maxlen)
Other text preprocessing:
make_sampling_table(),
skipgrams(),
text_hashing_trick(),
text_one_hot(),
text_to_word_sequence()
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