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tensor akışı:: işlem:: Alt dizin
#include <string_ops.h> Dizelerin Tensor alt dizeleri döndürün.
Özet
Tensor girişindeki her dize için, pos başlayarak toplam len uzunluğuna sahip bir alt dize oluşturur.
len giriş dizesinin uzunluğunu aşacak bir alt dize tanımlarsa veya len negatifse mümkün olduğu kadar çok karakter kullanılır.
Negatif pos dize içindeki uçtan geriye doğru mesafeyi belirtir.
pos giriş dizelerinden herhangi biri için aralık dışında olan bir dizin belirtirse InvalidArgumentError atılır.
pos ve len aynı şekle sahip olmalıdır, aksi takdirde Op oluşturulurken bir ValueError atılır.
NOT : Substr iki boyuta kadar yayını destekler. Burada yayın hakkında daha fazla bilgi
Örnekler
Skaler pos ve len kullanma:
input = [b'Hello', b'World']
position = 1
length = 3
output = [b'ell', b'orl']
pos ve len input aynı şekilde kullanmak:
input = [[b'ten', b'eleven', b'twelve'],
[b'thirteen', b'fourteen', b'fifteen'],
[b'sixteen', b'seventeen', b'eighteen']]
position = [[1, 2, 3],
[1, 2, 3],
[1, 2, 3]]
length = [[2, 3, 4],
[4, 3, 2],
[5, 5, 5]]output = [[b'en', b'eve', b'lve'],
[b'hirt', b'urt', b'te'],
[b'ixtee', b'vente', b'hteen']] pos ve len input yayınlama:
input = [[b'ten', b'eleven', b'twelve'],
[b'thirteen', b'fourteen', b'fifteen'],
[b'sixteen', b'seventeen', b'eighteen'],
[b'nineteen', b'twenty', b'twentyone']]
position = [1, 2, 3]
length = [1, 2, 3]output = [[b'e', b'ev', b'lve'],
[b'h', b'ur', b'tee'],
[b'i', b've', b'hte'],
[b'i', b'en', b'nty']] Girişi pos ve len input :
input = b'thirteen'
position = [1, 5, 7]
length = [3, 2, 1]
output = [b'hir', b'ee', b'n']
Yükseltir:
-
ValueError : İlk argüman dtype string Tensörüne dönüştürülemezse. -
InvalidArgumentError : Endeksler aralık dışındaysa. -
ValueError : pos ve len aynı şekilde değilse.
Argümanlar:
- kapsam: Bir Kapsam nesnesi
- giriş: Dizelerin tensörü
- konum: Her alt dizedeki ilk karakterin konumunu tanımlayan skaler
- len: Her alt dizeye dahil edilecek karakter sayısını tanımlayan skaler
İsteğe bağlı özellikler (bkz. Attrs ):
- birim: Alt dizeyi oluşturmak için kullanılan birim. Şunlardan biri:
"BYTE" (bayt cinsinden konumu ve uzunluğu tanımlamak için) veya "UTF8_CHAR" (UTF-8 kodlu Unicode kod noktaları için). Varsayılan "BYTE" dir. unit=UTF8_CHAR ve input dizeleri yapısal olarak geçerli UTF-8 içermiyorsa sonuçlar tanımsızdır.
İade:
Genel statik işlevler |
|---|
Unit (StringPiece x) | |
Genel özellikler
Kamu işlevleri
düğüm
::tensorflow::Node * node() const
operator::tensorflow::Input() const
operatör::tensorflow::Çıktı
operator::tensorflow::Output() const
Genel statik işlevler
Birim
Attrs Unit(
StringPiece x
)
Aksi belirtilmediği sürece bu sayfanın içeriği Creative Commons Atıf 4.0 Lisansı altında ve kod örnekleri Apache 2.0 Lisansı altında lisanslanmıştır. Ayrıntılı bilgi için Google Developers Site Politikaları'na göz atın. Java, Oracle ve/veya satış ortaklarının tescilli ticari markasıdır.
Son güncelleme tarihi: 2025-07-27 UTC.
[null,null,["Son güncelleme tarihi: 2025-07-27 UTC."],[],[],null,["# tensorflow::ops::Substr Class Reference\n\ntensorflow::ops::Substr\n=======================\n\n`#include \u003cstring_ops.h\u003e`\n\nReturn substrings from [Tensor](/versions/r2.3/api_docs/cc/class/tensorflow/tensor#classtensorflow_1_1_tensor) of strings.\n\nSummary\n-------\n\nFor each string in the input [Tensor](/versions/r2.3/api_docs/cc/class/tensorflow/tensor#classtensorflow_1_1_tensor), creates a substring starting at index `pos` with a total length of `len`.\n\nIf `len` defines a substring that would extend beyond the length of the input string, or if `len` is negative, then as many characters as possible are used.\n\nA negative `pos` indicates distance within the string backwards from the end.\n\nIf `pos` specifies an index which is out of range for any of the input strings, then an `InvalidArgumentError` is thrown.\n\n`pos` and `len` must have the same shape, otherwise a `ValueError` is thrown on Op creation.\n\n*NOTE* : [Substr](/versions/r2.3/api_docs/cc/class/tensorflow/ops/substr#classtensorflow_1_1ops_1_1_substr) supports broadcasting up to two dimensions. More about broadcasting [here](http://docs.scipy.org/doc/numpy/user/basics.broadcasting.html)\n\n*** ** * ** ***\n\n\u003cbr /\u003e\n\nExamples\n\nUsing scalar `pos` and `len`:\n\n\n```text\ninput = [b'Hello', b'World']\nposition = 1\nlength = 3\n```\n\n\u003cbr /\u003e\n\n\n```text\noutput = [b'ell', b'orl']\n```\n\n\u003cbr /\u003e\n\nUsing `pos` and `len` with same shape as `input`:\n\n\n```text\ninput = [[b'ten', b'eleven', b'twelve'],\n [b'thirteen', b'fourteen', b'fifteen'],\n [b'sixteen', b'seventeen', b'eighteen']]\nposition = [[1, 2, 3],\n [1, 2, 3],\n [1, 2, 3]]\nlength = [[2, 3, 4],\n [4, 3, 2],\n [5, 5, 5]]\n```\n\n\u003cbr /\u003e\n\n\n```text\noutput = [[b'en', b'eve', b'lve'],\n [b'hirt', b'urt', b'te'],\n [b'ixtee', b'vente', b'hteen']]\n```\n\n\u003cbr /\u003e\n\nBroadcasting `pos` and `len` onto `input`:\n\n\n```text\ninput = [[b'ten', b'eleven', b'twelve'],\n [b'thirteen', b'fourteen', b'fifteen'],\n [b'sixteen', b'seventeen', b'eighteen'],\n [b'nineteen', b'twenty', b'twentyone']]\nposition = [1, 2, 3]\nlength = [1, 2, 3]\n```\n\n\u003cbr /\u003e\n\n\n```text\noutput = [[b'e', b'ev', b'lve'],\n [b'h', b'ur', b'tee'],\n [b'i', b've', b'hte'],\n [b'i', b'en', b'nty']]\n```\n\n\u003cbr /\u003e\n\nBroadcasting `input` onto `pos` and `len`:\n\n\n```text\ninput = b'thirteen'\nposition = [1, 5, 7]\nlength = [3, 2, 1]\n```\n\n\u003cbr /\u003e\n\n\n```text\noutput = [b'hir', b'ee', b'n']\n```\n\n\u003cbr /\u003e\n\nRaises:\n\n\n- `ValueError`: If the first argument cannot be converted to a [Tensor](/versions/r2.3/api_docs/cc/class/tensorflow/tensor#classtensorflow_1_1_tensor) of `dtype string`.\n- `InvalidArgumentError`: If indices are out of range.\n- `ValueError`: If `pos` and `len` are not the same shape.\n\n\u003cbr /\u003e\n\nArguments:\n\n- scope: A [Scope](/versions/r2.3/api_docs/cc/class/tensorflow/scope#classtensorflow_1_1_scope) object\n- input: [Tensor](/versions/r2.3/api_docs/cc/class/tensorflow/tensor#classtensorflow_1_1_tensor) of strings\n- pos: Scalar defining the position of first character in each substring\n- len: Scalar defining the number of characters to include in each substring\n\n\u003cbr /\u003e\n\nOptional attributes (see [Attrs](/versions/r2.3/api_docs/cc/struct/tensorflow/ops/substr/attrs#structtensorflow_1_1ops_1_1_substr_1_1_attrs)):\n\n- unit: The unit that is used to create the substring. One of: `\"BYTE\"` (for defining position and length by bytes) or `\"UTF8_CHAR\"` (for the UTF-8 encoded Unicode code points). The default is `\"BYTE\"`. Results are undefined if `unit=UTF8_CHAR` and the `input` strings do not contain structurally valid UTF-8.\n\n\u003cbr /\u003e\n\nReturns:\n\n- [Output](/versions/r2.3/api_docs/cc/class/tensorflow/output#classtensorflow_1_1_output): [Tensor](/versions/r2.3/api_docs/cc/class/tensorflow/tensor#classtensorflow_1_1_tensor) of substrings\n\n\u003cbr /\u003e\n\n| ### Constructors and Destructors ||\n|---|---|\n| [Substr](#classtensorflow_1_1ops_1_1_substr_1ac4ec231f379a3a957a1ba6c388900d2e)`(const ::`[tensorflow::Scope](/versions/r2.3/api_docs/cc/class/tensorflow/scope#classtensorflow_1_1_scope)` & scope, ::`[tensorflow::Input](/versions/r2.3/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input)` input, ::`[tensorflow::Input](/versions/r2.3/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input)` pos, ::`[tensorflow::Input](/versions/r2.3/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input)` len)` ||\n| [Substr](#classtensorflow_1_1ops_1_1_substr_1ad8326181a5399cf82aef5d7e4d9b925b)`(const ::`[tensorflow::Scope](/versions/r2.3/api_docs/cc/class/tensorflow/scope#classtensorflow_1_1_scope)` & scope, ::`[tensorflow::Input](/versions/r2.3/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input)` input, ::`[tensorflow::Input](/versions/r2.3/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input)` pos, ::`[tensorflow::Input](/versions/r2.3/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input)` len, const `[Substr::Attrs](/versions/r2.3/api_docs/cc/struct/tensorflow/ops/substr/attrs#structtensorflow_1_1ops_1_1_substr_1_1_attrs)` & attrs)` ||\n\n| ### Public attributes ||\n|------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------|\n| [operation](#classtensorflow_1_1ops_1_1_substr_1a5cebdcec605f165be72c6ccb0b0a7b6c) | [Operation](/versions/r2.3/api_docs/cc/class/tensorflow/operation#classtensorflow_1_1_operation) |\n| [output](#classtensorflow_1_1ops_1_1_substr_1a833ab93a8bd8153ad683227af6205edd) | `::`[tensorflow::Output](/versions/r2.3/api_docs/cc/class/tensorflow/output#classtensorflow_1_1_output) |\n\n| ### Public functions ||\n|------------------------------------------------------------------------------------------------------------------|------------------------|\n| [node](#classtensorflow_1_1ops_1_1_substr_1a3a2b4eaf7158fcdda9d4b5e3012ed9c0)`() const ` | `::tensorflow::Node *` |\n| [operator::tensorflow::Input](#classtensorflow_1_1ops_1_1_substr_1ae833d53311bfbb74a3c86b93f99c5027)`() const ` | ` ` ` ` |\n| [operator::tensorflow::Output](#classtensorflow_1_1ops_1_1_substr_1a001cd1f5803fc422a0b6fa274ca5b0eb)`() const ` | ` ` ` ` |\n\n| ### Public static functions ||\n|------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------|\n| [Unit](#classtensorflow_1_1ops_1_1_substr_1a5ab53f27d3a07b25ad2b97cbaaa7747f)`(StringPiece x)` | [Attrs](/versions/r2.3/api_docs/cc/struct/tensorflow/ops/substr/attrs#structtensorflow_1_1ops_1_1_substr_1_1_attrs) |\n\n| ### Structs ||\n|-------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------|\n| [tensorflow::ops::Substr::Attrs](/versions/r2.3/api_docs/cc/struct/tensorflow/ops/substr/attrs) | Optional attribute setters for [Substr](/versions/r2.3/api_docs/cc/class/tensorflow/ops/substr#classtensorflow_1_1ops_1_1_substr). |\n\nPublic attributes\n-----------------\n\n### operation\n\n```text\nOperation operation\n``` \n\n### output\n\n```text\n::tensorflow::Output output\n``` \n\nPublic functions\n----------------\n\n### Substr\n\n```gdscript\n Substr(\n const ::tensorflow::Scope & scope,\n ::tensorflow::Input input,\n ::tensorflow::Input pos,\n ::tensorflow::Input len\n)\n``` \n\n### Substr\n\n```gdscript\n Substr(\n const ::tensorflow::Scope & scope,\n ::tensorflow::Input input,\n ::tensorflow::Input pos,\n ::tensorflow::Input len,\n const Substr::Attrs & attrs\n)\n``` \n\n### node\n\n```gdscript\n::tensorflow::Node * node() const \n``` \n\n### operator::tensorflow::Input\n\n```gdscript\n operator::tensorflow::Input() const \n``` \n\n### operator::tensorflow::Output\n\n```gdscript\n operator::tensorflow::Output() const \n``` \n\nPublic static functions\n-----------------------\n\n### Unit\n\n```text\nAttrs Unit(\n StringPiece x\n)\n```"]]
