"From a high-level perspective, LUIS performed best with an F-score of 0.916, followed by RASA (0.821), Watson Conversation (0.752), and API.ai (0.687). LUIS also performed best on each individual dataset: chatbot, web apps, and ask ubuntu. Similarly, API.ai performed worst on every dataset, while the second place changes between RASA and Watson Conversation."
Just in time. I was just researching this today. Quick question ( maybe not related). Is there a good open source solution for Entity Extraction, and more exactly mapping it to Wikipedia, ( Like GOOGLE NATURAL LANGUAGE API ) ?