Comments (5)
请问你装numpy的时候确定装到了py2吗,有可能装到了py3
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也有可能是conda的原因,我没用过conda, 不太确定如果是conda应该怎么用
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问题解决了,主要问题是1、我之前通过源码安装的时候遇到错误:error: could not create '/home/xiaofeng/anaconda2/lib/python2.7/site-packages/torch': Permission denied
然后我就运行sudo python setup.py install来进行安装。结果torch被默认安装在了我ubuntu系统自带的python2.7的文件夹(/usr/local/lib/python2.7/dist-packages/)下面,所以我之前执行程序的时候一直需要通过sudo来执行,不然提示找不到torch的模块。而numpy pyyaml mkl setuptools cmake cffi这些依赖安装在了anaconda2的文件夹下面。anaconda也包含了一个python2.7.如果我不通过sudo来执行程序的话,就会默认使用的是anaconda中安装的python2.7 所以这就造成了一个问题:sudo来执行程序,默认系统自带的python2.7,提示torch的依赖没有安装,如果不通过sudo来执行程序的话,默认的是anaconda带的python2.7 ,提示找不到torch模块。我最后重新通过源码安装了pytorch,没有用sudo直接python setup.py install。提示文件夹没有权限的,我用chmod来解决了。
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我运行了这个源码,但是现象和视频的不太一样,我将 loss.data[0] 打印出来
“
0.662851333618
0.0932437628508
0.0932437628508
0.0932437628508
0.0932437628508
0.0932437628508
0.0932437628508
0.0932437628508
0.0932437628508
0.0932437628508
0.0932437628508
0.0932437628508
0.0932437628508
0.0932437628508
0.0932437628508
0.0932437628508
0.0932437628508
0.0932437628508
0.0932437628508
0.0932437628508
”
但是好像后面的loss都一样,出现的图也是直线,没有进行拟合回归,我将程序和你视频里的程序对比了,应该是一样的。
然后我将学习效率 改成了0.1 训练次数改成了1000,出现了拟合回归的过程。刚开始学这个,只是知道这个程序的大概原理,还有一点就是参数初始化这点,比如直线y=wa+b ,这个w的初始化时pytorch会给一个默认值么,我们不需要进行指定么
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torch 初始化 w,b 的时候会默认使用 uniform distribution (如果我没记错的话). 关于初始化参数设置, 你可以参考一下我这个code
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