Error Matrix

分类值 \ 真值	A	B	错分误差	用户精度
A	a	b	b / (a+b)	a / (a+b)
B	c	d	c / (c+d)	d / (c+d)
漏分误差	c / (a+c)	b / (b+d)
制图精度	a / (a+c)	d / (b+d)
总体精度				(a+b) / (a+b+c+d)

Kappa Coefficient = 

Reference:
http://blog.sciencenet.cn/blog-228125-292483.html

Cleaning the Disk C

My computer has only 1.8 G today, I found that directory C:\Users\Baikal\Downloads\WinSxS too large, there are many old system files editions here, so I download a small software[1] to clean it. 

I didn't backup my data and files of it , bless for me it won't have some error.

It becomes bigger no longer red.

All right, there is nothing wrong!

Very perfect skills! In hyperlink, there is developer information, which is below.

姓名: 张善友
职业: 软件工程师
毕业于: 兰州大学2001
目前居住于: 中国深圳
目前就职于：深圳友浩达科技

13 Nov.2018 at 20:00 

Reference:

[1] http://www.cnblogs.com/shanyou/p/4713234.html 

Journey of writing paper of applying for Geography Master

Yesterday,Dr. Hui asked me to arrange my current study result to a paper, then submit the paper to Journal of BNU, Natural Sciences. If the paper will be submitted, the low-level paper at least relieve my guilty of my geography Master's degree. However, as I know, my result is very bad to submit the journal and maybe I won't achieve above wish before June in 2019. 

Whatever, first thanks for my supervisor PhD. Hui he is a perfect associate professor. The process of writing paper and modification will be good for me and improve my level and horizon. 

First Challenge:

Today(Nov. 2nd) ,  I encountered the first problem that adding reference. JBNU demands that format of reference papers should has only the first authors for paper and others using et al. Hyperlink[1] is my search result, but I cannot get anything after do as it said.

I think I knew why I failed after the parameters modification. I should use the existing IEEE format style to change. Hyperlink [1] doesn't illustrate very clear in output style of IEEE copy , in reality, this style generated in selection of IEEE style.
Succeed!

Fig.1 shows the original IEEE output style. Fig. 2 is JBNU template of references. All the modifications are achieved in Edit->Output Styles->Edit "IEEE Copy"( Modification window as Fig.3).

Fig.1 Reference Template of Journal of BNU

Fig.2 JBNU template of references label

Fig.3 Modification Location

Fig.4 Modification Result

It's 23:22.

Reference:

[1] https://blog.csdn.net/c4501srsy/article/details/41706151

Spyder,switching between python 2 and 3

Kernels for Python2:

Call on pip version:

Python –m pip –version

Installing ipykernel using pip tools:

Python –m pip install ipykernel

Python –m ipykernel install –user

To create Python environment :

Conda create –n ipykernel_py2 python=2 ipykernel

Source activate ipykernel_py2

Python –m ipykernel install –user

Kernels for different environments:

If u want to have multi-Ipython kernels for different virtualenvs or conda environments, u will need to specify unique names for the kernelspecs.

https://stackoverflow.com/questions/33709391/using-multiple-python-engines-32bit-64bit-and-2-7-3-5/40045888