TF-IDF

TF-IDF (Term Frequency-Inverse Document Frequency) is ideal for chatbots with straightforward intent recognition tasks and offers the benefit of quick training times, although it necessitates careful preprocessing.

Use Case in Chatbots:
TF-IDF is an excellent choice for simpler chatbot applications where the objective is straightforward intent recognition or keyword extraction. Its strength lies in its ability to identify the most relevant words in the user's input relative to a predefined corpus.

Training Data:
Typically, TF-IDF performs well when you have at least 10-20 samples per bot intent. However, its performance might suffer if the chatbot needs to understand complex language structures or context.

Training Time:
One of the major advantages of TF-IDF is its relatively short training time, especially beneficial for projects with tight deadlines or limited computational resources.