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Tuesday, June 20, 2017

Bot Asks Questions to Test Understanding

Bots test understanding by questioning.  

" ... In New Scientist By Matthew Reynolds   

Inquisitive artificial intelligence that asks questions about things it reads could be used to quiz students in class. The question-asking ability would also help chatbots with the back and forth of human conversation.

AI is usually on the receiving end of queries, says Xinya Du at Cornell University in Ithaca, New York. Du and his colleagues have turned the tables by building a system that has learned to ask questions of its own.

This is something that people have been wanting to do for a long time, says Karen Mazidi at the University of Dallas in Texas. Previous attempts by other people using hand-coded rules haven’t been particularly successful.

The machine-learning algorithm can read a passage of text and come up with the kind of questions you might ask to check someone’s understanding of a topic. Du’s team used a neural network – software that loosely mimics the structure of the brain – and trained it on more than 500 Wikipedia articles and 100,000 questions about those articles sourced from crowdworkers. For example, a sentence about different types of crop grown in Africa might be paired with the question “What is grown in the fertile highlands?” ... ' 

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