@article{CSIS_2019_16_3_a9,
     author = {Haijian Chen and Yonghui Dai and Heyu Gao and Dongmei Han and Shan Li},
     title = {Classification and {Analysis} of {MOOCs} {Learner{\textquoteright}s} {State:} {The} {Study} of {Hidden} {Markov} {Model}},
     journal = {Computer Science and Information Systems},
     publisher = {mathdoc},
     volume = {16},
     number = {3},
     year = {2019},
     url = {http://geodesic.mathdoc.fr/item/CSIS_2019_16_3_a9/}
}