By and large, there are two types of data: quantitative and qualitative data. If you want to do any kind of analysis such as regression and classification, you need to transform qualitative data to quantitative. Most data that have a category can be transformed to dummy variable. For instance, male can be zero and female […]
Author: JK
Before Starting the Process The reason why I have started writing these postings is because, as a beginner and learner of data science, I wanted to share my knowledge about clustering analysis and develop them based on active discussions. Main objective of these postings is to understand the whole process from data gathering to […]
There was an interesting article about big data based businesses of major credit card companies in Korea. According to Korea Economic Daily, two major card companies, Shinhan and Samsung, see big data as a new business opportunity while Hyundai Card is skeptical about it. Recently Shinhan and Samsung are each driving their data based services. […]
R data is huge, so it is general to analyze on a desktop (local computer) or a server which provides better computing power. However, the former is inconvenient when you analyze data without your computer while the latter requires a complicated set-up process. There is an option to use cloud DB without paying money: Google […]
There are several ways to put graphs and tables into a blog on WordPress. One of them is Visualizer plug-in, which is easy to handle and straightforward to input data. [ Barchart using Visualizer (example: Monthly Bill for Utility) ] [visualizer id=”1656″] However, the plug-in is limited to use CSV file and does not reflect […]
Recently in Korea, there was a news report that major shareholders in SundayToz sold their shares to SMILEGATE. SundayToz is a mobile game developing company established in 2009. The company was positioned as the number one social game developing company in Korea since its Anipang series became a hit, recording 28 million downloads. Their newly […]
Why do people read Greek mythology and enthusiastically watch movies on the based on these stories such as Titan? Gods and goddesses in the story are one of reasons that make it attractive. They have super power and they are immortal. In a business world, there are a few companies that are like the characters […]
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Era of Wearable Device – Smartwatch
Galaxy Gear (Source: samsung.com) There is lots of news about “Smartwatch” these days. In the TV show, Two and a Half Men, we can see Ashton Kutcher wearing Pebble, which is one of his investing companies. Wearable device, especially smartwatch, is no longer a gadget for techies. According to Digital Trends, 1.2 million smartwatches were […]
Many bloggers try hard to increase the number of visitors to their blogs. In order to intrigue readers, they use several plug-ins related to SEO (Search Engine Optimization). Simply, one of the most important ways to bring readers to your blog is search result. The other way is to keep your readers who once visited […]
The book, Hooked:How to Build Habit-Forming Products written by Nir Eyal and Ryan Hoover, deals with how to habituate people’s behavior in a business perspective. Authors of this book try to explain about each phase of habit-forming process in detail by exemplifying internet services and products. Actually it appears that the messages of the book […]