automatic classification of open-ended questions

[jfparmentier]

Scenario:

• teacher ask an open-ended question
• phase 1 : students answers
• phase 2 : students rates 3 to 5 other answers in a scale of proximity of answer (5 stars : identical answer, 1 star : another idea)
• phase 3 (publication of results) : instead of showing best rated answers, Tsaap displays cluster of answers that were evaluated as close to themselves.

When the teacher is creating his question, he can choose an option in setting up phase 3 : either "show best rated answers" or "show clusters of answers". This also change the message students get in phase 2 (explaining what kind of rating they must use).

[FranckSilvestre]

This story has to be split in smaller stories.