Step-by-step examples and different use cases of Pandas GroupBy — Intro In the data science community, Pandas has become a very popular framework for processing and manipulating data. It’s based upon Python, a very simple and versatile language we are all familiar with. It offers many useful functions to help us transform data into the format we want. …

The ins and outs of how broadcasting works under the hood — Intro What is broadcasting? Broadcasting is a mechanism that allows Numpy to handle arrays of different shapes during arithmetic operations. In broadcasting, we can think of it as a smaller array being “broadcasted” into the same shape as the larger array, before doing certain operations. In general, the smaller array will…

Needed in any modern data science or machine learning applications — Intro In current data science or machine learning applications, huge datasets and sophisticated networks are usually involved. Thus, code efficiency becomes really important when it comes to handling the computational workload. As an example, in a classic Multi-layer Perceptron (aka Feedforward Neural Network), the network typically contains multiple linear layers. Let’s…

Learn how to build a simple song recommendation engine using K-Nearest Neighbors with the Spotify Music Dataset — Intro Music lovers like you and me might constantly crave new songs that cater to our own personal music tastes. …

Simple tutorial covering the basics of BeautifulSoup with examples on how to scrape a Wikipedia article — Intro Today, the Internet contains a massive amount of information, ranging from social media posts to digital news to customer reviews, etc. Most likely, whatever problem you are trying to tackle, the Internet is going to have related data that is going to help you build a solution. However, in order…

Simple tutorial on Regular Expressions covering all the basics you need to know — Intro In our current age, there is plenty of data from various sources, especially textual data. In a data-driven generation, technologies such as Machine Learning and Natural Language Processing fully leveraged the power of natural language data to analyze and extract interesting insights that were not possible before. In the process…

A list of the best Machine Learning/Data Science programs in the US — For many, pursuing a graduate degree like Master’s or Ph.D. is a great path to enhance your skills and prepare better for the workforce. However, it is crucial to understand the differences between the two and know which one you want to pursue. If you are confused about which one…

The top 3 factors for choosing between Master’s and Ph.D. degrees — Intro In my previous post, I have described my experiences in getting an undergraduate degree in Computer Science. I also promised that I am going to let you guys know what I’m going to do next. …

Courses and projects I did during my bachelor’s — Intro For those of you who have followed me for a while or if you are a friend of mine reading this, you might know that I am currently studying at the Hong Kong University of Science and Technology. …