文档反馈

问题文档片段

问题文档片段包含公式时,显示为空格。

提交类型
issue

有点复杂...

找人问问吧。

请选择提交类型

问题类型
规范和低错类

- 规范和低错类:

- 错别字或拼写错误,标点符号使用错误、公式错误或显示异常。

- 链接错误、空单元格、格式错误。

- 英文中包含中文字符。

- 界面和描述不一致,但不影响操作。

- 表述不通顺,但不影响理解。

- 版本号不匹配:如软件包名称、界面版本号。

易用性

- 易用性:

- 关键步骤错误或缺失,无法指导用户完成任务。

- 缺少主要功能描述、关键词解释、必要前提条件、注意事项等。

- 描述内容存在歧义指代不明、上下文矛盾。

- 逻辑不清晰,该分类、分项、分步骤的没有给出。

正确性

- 正确性:

- 技术原理、功能、支持平台、参数类型、异常报错等描述和软件实现不一致。

- 原理图、架构图等存在错误。

- 命令、命令参数等错误。

- 代码片段错误。

- 命令无法完成对应功能。

- 界面错误,无法指导操作。

- 代码样例运行报错、运行结果不符。

风险提示

- 风险提示:

- 对重要数据或系统存在风险的操作,缺少安全提示。

内容合规

- 内容合规:

- 违反法律法规,涉及政治、领土主权等敏感词。

- 内容侵权。

请选择问题类型

问题描述

点击输入详细问题描述,以帮助我们快速定位问题。

mindspore.nn.Dense

class mindspore.nn.Dense(in_channels, out_channels, weight_init='normal', bias_init='zeros', has_bias=True, activation=None)[source]

The dense connected layer.

Applies dense connected layer for the input. This layer implements the operation as:

outputs=activation(Xkernel+bias),

where X is the input tensors, activation is the activation function passed as the activation argument (if passed in), kernel is a weight matrix with the same data type as the X created by the layer, and bias is a bias vector with the same data type as the X created by the layer (only if has_bias is True).

Parameters
  • in_channels (int) – The number of channels in the input space.

  • out_channels (int) – The number of channels in the output space.

  • weight_init (Union[Tensor, str, Initializer, numbers.Number]) – The trainable weight_init parameter. The dtype is same as x. The values of str refer to the function initializer. Default: ‘normal’.

  • bias_init (Union[Tensor, str, Initializer, numbers.Number]) – The trainable bias_init parameter. The dtype is same as x. The values of str refer to the function initializer. Default: ‘zeros’.

  • has_bias (bool) – Specifies whether the layer uses a bias vector. Default: True.

  • activation (Union[str, Cell, Primitive]) – activate function applied to the output of the fully connected layer, eg. ‘ReLU’.Default: None.

Inputs:
  • x (Tensor) - Tensor of shape (,in_channels). The in_channels in Args should be equal to in_channels in Inputs.

Outputs:

Tensor of shape (,out_channels).

Raises
  • TypeError – If in_channels or out_channels is not an int.

  • TypeError – If has_bias is not a bool.

  • TypeError – If activation is not one of str, Cell, Primitive, None.

  • ValueError – If length of shape of weight_init is not equal to 2 or shape[0] of weight_init is not equal to out_channels or shape[1] of weight_init is not equal to in_channels.

  • ValueError – If length of shape of bias_init is not equal to 1 or shape[0] of bias_init is not equal to out_channels.

Supported Platforms:

Ascend GPU CPU

Examples

>>> x = Tensor(np.array([[180, 234, 154], [244, 48, 247]]), mindspore.float32)
>>> net = nn.Dense(3, 4)
>>> output = net(x)
>>> print(output.shape)
(2, 4)