Text is a special kind of data, and text mining is a specialized technique to retrieve text data from large, unstructured data repositories such as legal codes. However, once we have mined the text data, we must now think about how we can deduce meaning from the text. This can be a real challenge. We could, of course, simply read all the text, but this could be very time-consuming and requires a great deal of specialized expertise. New techniques are being developed to rapidly retrieve meaning from text-based data to address these challenges. One of these techniques, word clouds, can be particularly useful for quickly gaining a sense of what meaning is conveyed by text. Watch this video to see how word clouds are constructed and how they can be used to understand the meaning in text. What are some types of text data that you rely on? How might a word cloud help?
Source: Barnet Elearning, https://www.youtube.com/watch?v=1nWz2g3MiaE This work is licensed under a Creative Commons Attribution 3.0 License.