[Docathon][Add API Legend No.51] add a figure of unfold method and update unfold_cn.rst #6951
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This reverts commit 3b4011a.
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感谢你贡献飞桨文档，文档预览构建中，Docs-New 跑完后即可预览，预览链接：http://preview-pr-6951.paddle-docs-preview.paddlepaddle.org.cn/documentation/docs/zh/api/index_cn.html |
docs/api/paddle/unsqueeze_cn.rst
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| :alt: 图例 | ||
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| 额外的，当需要在多个位置增加维度时， ``unsqueeze`` 方法会按元素顺序依次增加维度。例如 Shape 为 [2, 3] 的 Tensor 在 axis = [0, 2]处增加维度， ``unsqueeze`` 方法会先在第一维度前插入一个维度， Shape 变为 [1, 2, 3]，接着在第三维前插入一个维度， Shape 最终变为 [1, 2, 1, 3]。 |
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按元素顺序..可能会有点误解，可以说 Shape 的元素顺序第一维度，第三维度也会造成误解，直接说在 axis =0， axis = 2 前插入...
| @@ -9,6 +9,12 @@ unfold | |||
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| 仅在动态图下可用，返回的 Tensor 和 x 共享内存。 | |||
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| 下图展示了一个元素值为 0-8 且 Shape 为 [9] 的 Tensor 如何使用 ``unfold`` 方法在第一个维度（axis = 0），使用大小为 2 的窗口（size = 0）根据 4 的步长（step = 4）进行采样。 | |||
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