kind of like the system's being thrown into the deep end being expected to generate this missing piece from basic examples that they've seen before so moving on we have semi-supervised learning so I mentioned before that labels are very hard to obtain and especially in cases like speech recognition and web content classification so if you've got a webpage and you want to add tags to it you know it's hard to it's very time consuming for a person to sit down and read through that entire webpage and manually assign tags and then as well