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【Hackathon No.25】为 Paddle 新增 nanquantile 数学计算API #41343

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merged 20 commits into from Apr 15, 2022
Merged

【Hackathon No.25】为 Paddle 新增 nanquantile 数学计算API #41343

merged 20 commits into from Apr 15, 2022

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Asthestarsfalll
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@Asthestarsfalll Asthestarsfalll commented Apr 2, 2022

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解决了issue:#40308
增加了paddle.nanquantile。其是paddle.quantile的变体,即沿给定的轴计算非nan元素的分位数。
设计文档:PaddlePaddle/community#55

修改了paddle.quantile的代码,使其与paddle.nanquantile共用绝大部分代码,所有计算逻辑都在函数_compute_quantile中。
修复了quantile不能对含NaN的输入计算正确结果的问题,修复了quantile单测代码中静态图失败的问题。
修复了quantile不能与numpy结果高精度对齐,并且在输出格式上与numpy对齐,对于任意数据类型的输入,结果都是float64

@paddle-bot-old paddle-bot-old bot added contributor External developers status: proposed labels Apr 2, 2022
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paddle-bot-old bot commented Apr 2, 2022

你的PR提交成功,感谢你对开源项目的贡献!
请关注后续CI自动化测试结果,详情请参考Paddle-CI手册
Your PR has been submitted. Thanks for your contribution!
Please wait for the result of CI firstly. See Paddle CI Manual for details.

@yang131313
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PR-CI-Coverage没过说明代码覆盖率不够,这个CI是需要通过的噢~

@Asthestarsfalll
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@yang131313 你好,日志上显示超时,请问该如何处理呢。这个api本身需要覆盖的情况是比较多的,可以设置超时时间吗?

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paddle-bot-old bot commented Apr 6, 2022

PR格式检查通过,你的PR将接受Paddle专家以及开源社区的review,请及时关注PR动态。
The format inspection passed. Your PR will be reviewed by experts of Paddle and developers from the open-source community. Stay tuned.

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luotao1 commented Apr 6, 2022

@Asthestarsfalll 可以试试把输入数据变小一点来通过单测


import numpy as np
import paddle
x = np.random.randn(2, 3)
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建议示例不要用随机数,用一个固定构造的数组。2*3矩阵里的元素可以简单便于手动计算:

  • quantile和nanquantile更容易让读者发现两者的区别
  • 对于插值计算也容易理解

def nanquantile(x, q, axis=None, keepdim=False):
"""
Compute the quantile of the input as if NaN values in input did not exist.
If all values in a reduced row are NaN then the quantiles for that reduction will be NaN.
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If all values in a reduced row are NaN
后面加逗号

需要补充全NAN的示例

def quantile(x, q, axis=None, keepdim=False):
"""
Compute the quantile of the input along the specified axis.
If any values in a reduced row are NaN then the quantiles for that reduction will be NaN.
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If any values in a reduced row are NaN
后面加逗号

x = paddle.to_tensor(input_data)
paddle_res = paddle.nanquantile(x, q=0.35, axis=0)
np_res = np.nanquantile(x, q=0.35, axis=0)
self.assertTrue(np.allclose(paddle_res.numpy(), np_res, equal_nan=True))
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单测和quantile几乎一摸一样,但nanquantile更要侧重对NAN的测试:

  • 可以修改一下已有单测,每个Class里增加不同位置NAN的测试。包括一个或者多个NAN
  • 缺少全是NAN的测试

因为两份单测非常类似,如果可以的话,看如何更好地进行复用(非强制要求),如

test_case(self.x)
test_case(self.x, [])
test_case(self.x, -1)
test_case(self.x, keepdim=True)
test_case(self.x, 2, keepdim=True)
test_case(self.x, [0, 2])
test_case(self.x, (0, 2))
test_case(self.x, [0, 1, 2, 3])
paddle.enable_static()

_test_static_graph('amax')
_test_static_graph('amin')
_test_static_graph('max')
_test_static_graph('min')

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@luotao1 你好,已修改。

x, q=[0.1, 0.2, 0.3], axis=[1, 2], keepdim=True)
np_res = np.quantile(
self.input_data, q=[0.1, 0.2, 0.3], axis=[1, 2], keepdims=True)
self.assertTrue(np.allclose(paddle_res.numpy(), np_res))
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99-144行的单测为什么不用API_list呢?

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数值正确性在TestQuantileAndNanquantile中进行测试,我认为TestMuitlpleQ更多的是想验证当输入多个q时结果是否正常,而quantile和nanquantile在计算方式上仅有些微差别(我相信TestQuantileAndNanquantile能覆盖绝大多数情况),对于多个q的情况,也只是将单次的结果加入列表中,输出时stack起来。另一方面也是防止测试太多超时(还是超时了),因此我认为只使用quantile是足够的(或者改为quantile和nanquantile交替使用)。

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好的

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luotao1 commented Apr 11, 2022

另一方面也是防止测试太多超时(还是超时了)

超时的话,1)可以试试把测试数据变小, 2)分成两个单测文件

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@luotao1 luotao1 closed this Apr 14, 2022
@luotao1 luotao1 reopened this Apr 14, 2022
luotao1
luotao1 previously approved these changes Apr 14, 2022
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LGTM

@@ -445,6 +446,7 @@
'numel',
'median',
'quantile',
'nanquantile'
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又少了一个逗号了。。
可以通过看日志发现:https://xly.bce.baidu.com/paddlepaddle/paddle/newipipe/detail/5392118/job/14041205


2022-04-14 01:51:31 There are 3 approved errors.
2022-04-14 01:51:31 ****************
2022-04-14 01:51:32 API Difference is: 
2022-04-14 01:51:32 - paddle.Tensor.is_complex (ArgSpec(args=['x'], varargs=None, varkw=None, defaults=None, kwonlyargs=[], kwonlydefaults=None, annotations={}), ('document', '9d4dc47b098ce34e65cc23e14ad02281'))
2022-04-14 01:51:32 - paddle.Tensor.quantile (ArgSpec(args=['x', 'q', 'axis', 'keepdim'], varargs=None, varkw=None, defaults=(None, False), kwonlyargs=[], kwonlydefaults=None, annotations={}), ('document', 'd6e25fbeb7751f8e57ad215209f36e00'))
2022-04-14 01:51:32 ?                                                                                                                                                                                          ^ ^^^^^^^   ^^^^^ ^^^^^^^ ^^^^^^^^^

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抱歉,已修改。当时看的时候还以为是__all__里的。。

@luotao1 luotao1 requested a review from DDDivano April 15, 2022 02:17
@dingjiaweiww dingjiaweiww self-requested a review April 15, 2022 02:18
@Asthestarsfalll
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实在抱歉,还是有些纰漏。之前发现时未及时修改,后面事情太多忘记了..

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luotao1 commented Apr 15, 2022

实在抱歉,还是有些纰漏。之前发现时未及时修改,后面事情太多忘记了

是有什么问题呢?文档还是哪块?

@Asthestarsfalll
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Asthestarsfalll commented Apr 15, 2022

文档还是哪块?

文档部分

@luotao1
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luotao1 commented Apr 15, 2022

文档部分

文档部分下一个PR修吧,这个PR涉及approve的同学比较多,先合入主体功能

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文档部分下一个PR修吧,这个PR涉及approve的同学比较多,先合入主体功能

收到(。>ㅿ<。)

@luotao1 luotao1 merged commit b9ee6a2 into PaddlePaddle:develop Apr 15, 2022
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