Natural Language understanding

Chatbots can be built without having to understand utterances from the user. However, adding the natural language understanding capability is not very difficult. It is one of the hallmark features that sets chatbots apart from their digital counterparts such as websites and apps with visual elements. There are many natural language understanding modules that are available as cloud services. Major IT players like Google, Microsoft, Facebook, and IBM have created tools that you can plug into your chatbot. Google's Dialogflow, Microsoft LUIS, IBM Watson, SoundHound, and Facebook's Wit.ai are some of the NLU tools that you can try. We will explore Dialogflow (previously called Api.Ai) in some of the chapters.