An Overview of TED Talks using Tableau

I’ve always been a huge fan of TED talks. TED talks cover a wide range of topics from technology, innovation, society and personal growth and have always been a huge source of inspiration for me. Therefore, I’ve decided to use this topic to practice building dashboards in Tableau. In this visualization, I hope to understand more about TED talks by asking the following questions:

  • How has TED talks changed across the years (e.g. number of talks, topics)?
  • What are the most popular TED talks?
  • What do audiences generally think about TED talks?

The data set used is from Kaggle, which covers 2,550 TED talks from 1972 to 22 Sep 2017. I have done some basic cleaning of the data, mostly on converting the format of ratings and themes. You can view the interactive Tableau dashboard by clicking the image.

TED Talks (1972 - 2017)
To summarize:
  • The number of TED talks significantly increased in 2009. This is also the same year when TEDx talks started.
  • Most TED talks are held in Feb – Mar, the month when the Annual TED conference is held. Most TED talks are held on Wednesdays and Thursdays.
  • Technology and science have always been a common topic for TED talks. Since 2015, there are more and more talks about innovation and society.
  • Audiences generally have positive perceptions on TED talks. Looking at the most popular TED talks, the top 10 most commented talks are viewed as inspiring, informative, fascinating and persuasive. The top 10 most viewed talks share similar ratings, and are also viewed as funny.
I have also build a recommender, which recommends 10 talks with the most specific rating, for example, the 10 most inspiring talks. Now I have some idea of what TED talks to watch next!