七月 9, 2019

回复审稿人意见的笔记

题目：我原来的题目是“修改说明”，老师改成了“稿件修稿说明”

排版：

(1) 专家原来提出的问题用粗体字标出，每一组问题-答复之间不空行。（我本来是蓝色字体标出，且每一天意见的回复之后都会空行。）

四月 11, 2019

Pytorch模型训练翻车记录

在Google Colab上进行压缩采样的图像重建模型的训练。已经有了训练好的压缩率是0.20的模型（下文用r0.20之类的记号表示压缩率及其对应的模型）。现在想训练r0.25。觉得从头开始训练很费时间于是就想出了这么个办法

九月 16, 2018

To begin with let’s just have look at the old school of lambda in Python.

As we know, lambda x: return x**2 is exactly equivalent to

def squared(x): return x**2

Now look at this

>>> f1 = lambda x,y,z: x+1, y+1, z+1
>>> print(f1(1,1,1))

What will you get on the screen? A tuple of (2, 2, 2)? No. You get an error instead.

Traceback (most recent call last):
  File "<pyshell#7>", line 1, in <module>
    print(f1(1,1,1))
TypeError: 'tuple' object is not callable</module>

Now that the “returning part” of lambda is covering the contents before comma only, let’s explicitly add the brackets:

九月 11, 2018

As noted in Python 3 documention, behaviors of +, -, *, etc. can be redefined.

Specially, I would like to take notes on some special yet common methods.

This method is called when you apply print on the instance. Could be useful when debugging class related problems.

Those two methods are key components of a context manager. Refer to https://jeffknupp.com/blog/2016/03/07/python-with-context-managers/ to get a sense on how to manage the fragile resouces with context manager.

四月 22, 2018