Workshop 2: Machine

Workshop 2: Machine learning now Case study 1 - Netflix 1. At the beginning, the machine has no idea what you might want to watch. You choose a film. It stores information about the choices you make, the content of the films and the choices other people make. (Input) 2. When you select a film, the machine tracks what you watched and looks for similar films or films other people have watched to make recommendations. (Algorithm) 3. Netflix suggests films you might like to watch. (Output) 4. You can either choose to watch the recommended films or ignore them. (Test) 5. If you choose to watch the recommended films, it shows the system is working and Netflix will continue to suggest these kinds of films to you. (Feedback) 6

Workshop 2: Machine learning now Basic flowchart – to be used with case studies 2 and 3 1. Data (input): What is the content of the data? E.g. pictures of bees and threes from the video you watched at the beginning Where does the data come from? Place card here 4. Test How does the machine know how well it has done? E.g. Checks if the picture has been correctly sorted by comparing its response to the responses given by a human/humans. 2. Algorithm What does the machine or system do with the data? E.g. ‘Look’ for patterns in all the photos of threes and all the photos of bees Place card here Place card here 3. Output What output does the machine produce? E.g. Sorts each photo into either bee or three Place card here 5. Feedback How does the machine use the results to improve its performance? E.g. ‘Remembers’ which answers were correct and incorrect and uses this to improve pattern recognition and identify future pictures more accurately Place card here 7