Xiaoqian Sun

Database are being used all around us. Everything generate data, and most of them will get stored into a database somewhere. Today we are going to learn about relationship database system, sql and non-relational database system.

Xiaoqian Sun

Machine learning is the science of getting computers to act without being explicitly programmed. Instead of writing lines of code with a lot of rules like “if something then do this”, Machine Learning software identifies patterns and creates algorithms based on large sets of data. In some many industries, people have been replaced by Machine Learning software to do intelligent tasks including recognization, prediction, advice, optimization and classification. Now follow me to sense the power of Machine learning.

Xiaoqian Sun

Amazon Web Services(AWS) is a cloud service from Amazon, which provides services in the form of building blocks, these building blocks can be used to create and deploy any type of application in the cloud. These services are designed to work with each other, and result in applications which are sophisticated and highly scalable.

Xiaoqian Sun

At the end of 2019, two K-pop stars, Sulli and Goo Hara, died in the space of six weeks because depression. I feel so sorry for both of them, especially Sulli. She was such a dazzling girl and I just couldn't move my eyes away from her photos. Based on facts provided by World Health Organization: around 1 in 5 of the world's children and adolescents have a mental disorder; around 1 in 9 people in settings affected by conflict have a moderate or severe mental disorder; almost 800,000 people died in suicide every year. Suicide is the second leading cause of death in individuals aged 15-29 years. There are one person dying from suicide every 40 seconds. Today's dataset is from Mental Health on Tech Workplace Survey. I designed a dashboard for this topic based on the dataset and today we will work on the first part of it. We'll complete the final dashboard after we learn D3 and AWS.

Xiaoqian Sun

Today’s topic is d3. D3 is a javascript framework that is used to visualize data. D3 is worth learning because it is more customizable. It is designed to be used in the web which allow interactions. I’ve seen it being used and used it myself to build visualization in my work space as well. It is probably a bit harder to get started as it do involves quite a bit of infrastructure and understanding of some basic stuff. So I will be going over these basic building blocks as well. Even though we are leaning these because of d3, but they actually good skills that will help you guys in the future as well. I remember I had a few courses during college which required me to build a webpage using HTML/CSS. So it will be good that you have some knowledge on these foundation languages.

Xiaoqian Sun

Today, I am going to give you a brief introduction to R and build a simple linear model using R. I hope I can introduce several programming languages, help you gather more information and let yourself to make your own decisions which one you prefer and want to be an expert. Besides R, I'll also introduce a little bit statistics background knowledge to you guys. Let's begin today's class.

Xiaoqian Sun

Matplotlib is a Python 2D plotting library which produces publication quality figures in a variety of hardcopy formats and interactive environments across platforms. As a heavy Python user, I surely use Matplotlib a lot. The first time I saw my professor plotted a GeoMap using Matplotlib to visualize population size in US, I was blown away. Now, please follow me to plot some simple charts using Matplotlib to feel a sense of its art.

Xiaoqian Sun

Python is a general-purpose, versatile and popular programming language. Companies worldwide are using Python to harvest insights from their data and gain a competitive edge. Let's get to know Python by learning some basic knowledge, including Data Type, Containers, Function and Class. Get yourself ready? Let's do it!

Xiaoqian Sun

Data Mining is like a gold mining game in which you try various methods to explore unknowns, discover hidden patterns, and extract 'gold' encased in 'rock'. That is s a process full of adventures. Get to know some basic concepts and tools before you start.

Xiaoqian Sun

Lupus is a long-term autoimmune disease in which the body's immune system becomes hyperactive and attacks normal, healthy tissue. Symptoms vary but can include fatigue, joint pain, rash, and fever. These can periodically get worse (flare-up) and then improve. While there's no cure for lupus, current treatments focus on improving quality of life through controlling symptoms and minimizing flare-ups. Get ready to learn more about Lupus?

Xiaoqian Sun

Data Science is a word full of charming. Data Scientist is a group of people who help solve problems and better life. Data Science Project is is a never-end process to promote the launched system ever better. Today, I would like to give an introduction of data science to empower you start your journal in data science. Are you ready?