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@inproceedings{820702, author = {Briatková, Mária and Kedaj, Zdeněk and Popelínský, Lubomír}, address = {Brno}, booktitle = {Sborník konference SCO 2008}, keywords = {e-learning; electronic tests; machine learning; visualization}, language = {cze}, location = {Brno}, isbn = {978-80-210-4613-9}, publisher = {PřF MU}, title = {DŽEMUj - dobývání znalostí z odpovědníků IS MU}, year = {2008} }
TY - JOUR ID - 820702 AU - Briatková, Mária - Kedaj, Zdeněk - Popelínský, Lubomír PY - 2008 TI - DŽEMUj - dobývání znalostí z odpovědníků IS MU PB - PřF MU CY - Brno SN - 9788021046139 KW - e-learning KW - electronic tests KW - machine learning KW - visualization N2 - We introduce DZEMUj, a system for mining in e-learning data, namely in electronic tests and DIA, DZEMUj Intelligent Assistant. DZEMUj farther extends capabilities of the elearning module of the Information system of Masaryk University and offers a set of tools for data analysis. DZEMUj enables to find the most difficult and/or the easiest test queries, to discover associations between answers and also between behaviour of students. We shortly describe data preparation, namely data transformation and data pre-processing. Then we focus on knowledge discovery and knowledge visualization - a scatter plot, RadViz and frequent patterns. DZEMUj has been testing on data from the e-learning module of Information System of Masaryk University since January 2008. DZEMUj is quite efficient. For 507 students, 80 different questions, 10 questions in a student test, the analysis finished in less then 1 minute. DZEMUj is implemented in python, java and R. We conclude this part with evaluation of DZEMUj. Then DIA, an intelligent assistant for DZEMUj is described. ER -
BRIATKOVÁ, Mária, Zdeněk KEDAJ a Lubomír POPELÍNSKÝ. DŽEMUj - dobývání znalostí z odpovědníků IS MU. In \textit{Sborník konference SCO 2008}. Brno: PřF MU, 2008, 6 s. ISBN~978-80-210-4613-9.
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