Jeffshow.com Website Review

The Brief History of Mankind This book has been very hot in recent years. Can start. Fortunately, in the past two months, Jeff's reading habits have been gradually cultivated, and he has caught up with the beginning of 2019, so he decided to start this year's reading journey from this book. Introduction: Tencent video program A Good Book No. 4: Wang Zijian's interesting interpretation of A Brief History of Humanity, human beings dominate the Earth Connect contains 7 major functional modules, but due to permissions issues, you may only see some of them under your account. Function modules, all of which are displayed on the first page in the form of large icons. The following is a brief introduction to these large function modules: Read More → In the past time, select a day as the base date, for example, select 2018.1.25 as the base date. To estimate the DAU at the end of the year, here is the end of the year 2018.12.31, which can be considered as the target date. The DAU of the target date is composed of two parts, and part of it is the retention of the new users on the target day after the base date. The new user is retained; the other part is the retention of the user on the target date on the base date and before the base date. This is called the old user retention. Read More → # Import the library files needed for import numpy as np import matplotlib.pylab as plt from sklearn.preprocessing import StandardScaler Jupyter Notebook , from IPython Notebook, is an interactive notebook that supports multiple programming languages ​​(below Referred to as Jupyter). Jefferson currently only uses it to write Python code, so the following description can be considered as Jupyter. Unlike Notepad++, Sublime Text, Vim and other tools, Jupyter works on a web browser. That is to say, we write the code in a page opened by the browser, and then send the code execution command on the page, the code execution result will still be displayed on this page, and at the same time Jupyter, a colleague ran over and asked me to use GA. The number of Unique Events received by the API is not the same as that displayed by the GA report. I reappeared as he said and found that it was different. API (The following uses the Query Explorer. Before we create a custom report, let's explain two very important concepts in GA - dimensions and metrics.