@article {amir2013plan, title = {Plan Recognition and Visualization in Exploratory Learning Environments}, journal = {ACM Transactions on Interactive Intelligent Systems (TiiS)}, volume = {3}, year = {2013}, pages = {16{\textendash}1}, publisher = {ACM}, url = {https://www.dropbox.com/s/1goea6p2n7cnacn/tiisVLfinal\%20\%281\%29.pdf?dl=0}, author = {Amir, Ofra and Gal, Kobi} }