Some Beginner Resources for Learning Data Visualization in Tableau

Date: 06 Jan 2021 Recently, I am preparing the launch of Tableau in my company. I have, therefore, collected some useful resources and want to share with my readers. General Learning Path Understand the terminology used in Tableau You may refer to this link. Understand the Tableau environment, meaning the functions of buttons and cards …

Data Governance V.S. Data Engineering V.S. Data Analysis

Date: 31 Dec 2020 Like most of you, when I tried to explore the career in data field, I want to be a data analyst. It is the sexiest job in 21st Century (according to Harvard Business Review. [an article titled: Data Scientist: The Sexiest Job of the 21st Century]). At that time, I didn’t …

Predicting House Price in Hong Kong #7: Selecting Error Matric

In #6, I have talked about building a Minimum Viable Product (MVP). In this post, I am going to discuss the different matrices to evaluate a regression model and my choice for the problem. NOTATIONS n is the number of testing samples. y_i is the i th predicted value. x_i is the i th actual …

Predicting House Price in Hong Kong #4

Date: 26 July 2020 In #3, I faced difficulty in having a lot of missing values in the property transaction data. After searching the web, I found that Centaline claimed they have spent 10 million HKD to fill the missing values. Maybe, I should try scraping data from Centaline. Luckily, I have scrapped Centaline data …

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