---
title: "sgd_optimizer: sgd_optimizer"
description: "Stochastic gradient descent optimizer."
author: VanMSFT
ms.author: vanto
ms.date: 07/15/2019
ms.service: sql
ms.subservice: "machine-learning-services"
ms.topic: "reference"
keywords:
  - optimizer
  - sgd
ms.devlang: python
monikerRange: ">=sql-server-2017||>=sql-server-linux-ver15"
---
# *microsoftml.sgd_optimizer*: Stochastic gradient descent





## Usage



```
microsoftml.sgd_optimizer(learning_rate: numbers.Real = None,
    momentum: numbers.Real = None, nag: bool = None,
    weight_decay: numbers.Real = None,
    l_rate_red_ratio: numbers.Real = None,
    l_rate_red_freq: numbers.Real = None,
    l_rate_red_error_ratio: numbers.Real = None)
```





## Description

Stochastic gradient descent optimizer.


## Arguments


### learning_rate

Learning rate (settings).


### momentum

Momentum Term (settings).


### nag

Use Nesterov's accelerated gradient (settings).


### weight_decay

Weight decay (settings).


### l_rate_red_ratio

Learning rate reduction ratio (settings).


### l_rate_red_freq

Learning rate reduction ratio (settings).


### l_rate_red_error_ratio

Relative error reduction criterion for learning rate reduction (settings).


## See also

[`adadelta_optimizer`](adadelta-optimizer.md)