The conversation between human and AI assistant.
What is the difference between tf-idf and Delta tf-idf from the formula?
Can you give an example of how Delta tf-idf would be useful in practice?
Sure. Let's say you are analyzing news articles about a particular topic over time. You could use Delta TF-IDF to identify terms that are becoming more or less important over time. For example, if you were analyzing coverage of the 2020 US Presidential election, you might find that the term "coronavirus" had a high Delta TF-IDF score in articles from March and April, but became less important in subsequent months as other issues came to the forefront. This could help you identify important trends and patterns in the data.