tf.math.argmax
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Returns the index with the largest value across axes of a tensor.
tf.math.argmax(
input,
axis=None,
output_type=tf.dtypes.int64,
name=None
)
Used in the notebooks
| Used in the guide |
Used in the tutorials |
|
|
|
In case of identity returns the smallest index.
For example:
A = tf.constant([2, 20, 30, 3, 6])
tf.math.argmax(A) # A[2] is maximum in tensor A
<tf.Tensor: shape=(), dtype=int64, numpy=2>
B = tf.constant([[2, 20, 30, 3, 6], [3, 11, 16, 1, 8],
[14, 45, 23, 5, 27]])
tf.math.argmax(B, 0)
<tf.Tensor: shape=(5,), dtype=int64, numpy=array([2, 2, 0, 2, 2])>
tf.math.argmax(B, 1)
<tf.Tensor: shape=(3,), dtype=int64, numpy=array([2, 2, 1])>
C = tf.constant([0, 0, 0, 0])
tf.math.argmax(C) # Returns smallest index in case of ties
<tf.Tensor: shape=(), dtype=int64, numpy=0>
Args |
|---|
input
|
A Tensor.
|
axis
|
An integer, the axis to reduce across. Default to 0.
|
output_type
|
An optional output dtype (tf.int32 or tf.int64). Defaults
to tf.int64.
|
name
|
An optional name for the operation.
|
Returns |
|---|
A Tensor of type output_type.
|
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Last updated 2024-04-26 UTC.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2024-04-26 UTC."],[],[],null,["# tf.math.argmax\n\n\u003cbr /\u003e\n\n|----------------------------------------------------------------------------------------------------------------------------|\n| [View source on GitHub](https://github.com/tensorflow/tensorflow/blob/v2.16.1/tensorflow/python/ops/math_ops.py#L262-L296) |\n\nReturns the index with the largest value across axes of a tensor.\n\n#### View aliases\n\n\n**Main aliases**\n\n[`tf.argmax`](https://www.tensorflow.org/api_docs/python/tf/math/argmax)\n\n\u003cbr /\u003e\n\n tf.math.argmax(\n input,\n axis=None,\n output_type=../../tf/dtypes#int64,\n name=None\n )\n\n### Used in the notebooks\n\n| Used in the guide | Used in the tutorials |\n|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| - [Multilayer perceptrons for digit recognition with Core APIs](https://www.tensorflow.org/guide/core/mlp_core) - [Migrate metrics and optimizers](https://www.tensorflow.org/guide/migrate/metrics_optimizers) - [Distributed training with Core APIs and DTensor](https://www.tensorflow.org/guide/core/distribution) - [Introduction to Tensors](https://www.tensorflow.org/guide/tensor) - [Introduction to Variables](https://www.tensorflow.org/guide/variable) | - [Transfer learning with YAMNet for environmental sound classification](https://www.tensorflow.org/tutorials/audio/transfer_learning_audio) - [Transfer learning with TensorFlow Hub](https://www.tensorflow.org/tutorials/images/transfer_learning_with_hub) - [Custom training: walkthrough](https://www.tensorflow.org/tutorials/customization/custom_training_walkthrough) - [Simple audio recognition: Recognizing keywords](https://www.tensorflow.org/tutorials/audio/simple_audio) - [Distributed training with DTensors](https://www.tensorflow.org/tutorials/distribute/dtensor_ml_tutorial) |\n\nIn case of identity returns the smallest index.\n\n#### For example:\n\n A = tf.constant([2, 20, 30, 3, 6])\n tf.math.argmax(A) # A[2] is maximum in tensor A\n \u003ctf.Tensor: shape=(), dtype=int64, numpy=2\u003e\n B = tf.constant([[2, 20, 30, 3, 6], [3, 11, 16, 1, 8],\n [14, 45, 23, 5, 27]])\n tf.math.argmax(B, 0)\n \u003ctf.Tensor: shape=(5,), dtype=int64, numpy=array([2, 2, 0, 2, 2])\u003e\n tf.math.argmax(B, 1)\n \u003ctf.Tensor: shape=(3,), dtype=int64, numpy=array([2, 2, 1])\u003e\n C = tf.constant([0, 0, 0, 0])\n tf.math.argmax(C) # Returns smallest index in case of ties\n \u003ctf.Tensor: shape=(), dtype=int64, numpy=0\u003e\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n| Args ---- ||\n|---------------|------------------------------------------------------------------------------------------------------------------------------------|\n| `input` | A `Tensor`. |\n| `axis` | An integer, the axis to reduce across. Default to 0. |\n| `output_type` | An optional output dtype ([`tf.int32`](../../tf#int32) or [`tf.int64`](../../tf#int64)). Defaults to [`tf.int64`](../../tf#int64). |\n| `name` | An optional name for the operation. |\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n| Returns ------- ||\n|---|---|\n| A `Tensor` of type `output_type`. ||\n\n\u003cbr /\u003e"]]
View source on GitHub