## How we Created an Open-Source COVID-19 Chatbot

As I just mentioned, we calculate the (cosine of the) angle between these dots (encodings), to compare how semantically equal the sentences are. Since each encoding already has length 1, we only need to calculate the internal product. The internal product calculates the cosine of the angle between the red and the blue dot, resulting … Read more How we Created an Open-Source COVID-19 Chatbot