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Educational data mining

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122:. For example, analyzing data from an LMS may reveal a relationship between the learning objects that a student accessed during the course and their final course grade. Similarly, analyzing student transcript data may reveal a relationship between a student's grade in a particular course and their decision to change their academic major. Such information provides insight into the design of learning environments, which allows students, teachers, school administrators, and educational policy makers to make informed decisions about how to interact with, provide, and manage educational resources. 254:, the best methods to deliver course information and the tools to use to engage their learners for optimal learning outcomes. In particular, the distillation of data for human judgment technique provides an opportunity for educators to benefit from EDM because it enables educators to quickly identify behavioural patterns, which can support their teaching methods during the duration of the course or to improve future courses. Educators can determine indicators that show student satisfaction and engagement of course material, and also monitor learning progress. 266:– Administrators are responsible for allocating the resources for implementation in institutions. As institutions are increasingly held responsible for student success, the administering of EDM applications are becoming more common in educational settings. Faculty and advisors are becoming more proactive in identifying and addressing at-risk students. However, it is sometimes a challenge to get the information to the decision makers to administer the application in a timely and efficient manner. 753:– Plagiarism detection is an ongoing challenge for educators and faculty whether in the classroom or online. However, due to the complexities associated with detecting and preventing digital plagiarism in particular, educational data mining tools are not currently sophisticated enough to accurately address this issue. Thus, the development of predictive capability in plagiarism-related issues should be an area of focus in future research. 134:, including the increase in computing power and the ability to log fine-grained data about students' use of a computer-based learning environment, have led to an increased interest in developing techniques for analyzing the large amounts of data generated in educational settings. This interest translated into a series of EDM workshops held from 2000 to 2007 as part of several international 736:– Individual privacy is a continued concern for the application of data mining tools. With free, accessible and user-friendly tools in the market, students and their families may be at risk from the information that learners provide to the learning system, in hopes to receive feedback that will benefit their future performance. As users become savvy in their understanding of 702:
another and even with the support of statistical and visualization tools, creating one simplified version of the data can be difficult. Furthermore, choosing which data to mine and analyze can also be challenging, making the initial stages very time-consuming and labor-intensive. From beginning to end, the EDM strategy and implementation requires one to uphold
237:– Learners are interested in understanding student needs and methods to improve the learner's experience and performance. For example, learners can also benefit from the discovered knowledge by using the EDM tools to suggest activities and resources that they can use based on their interactions with the 701:
Along with technological advancements are costs and challenges associated with implementing EDM applications. These include the costs to store logged data and the cost associated with hiring staff dedicated to managing data systems. Moreover, data systems may not always integrate seamlessly with one
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tool and insights from past or similar learners. For younger learners, educational data mining can also inform parents about their child's learning progress. It is also necessary to effectively group learners in an online environment. The challenge is using the complex data to learn and interpret
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of educational data mining tools need to be proactive in protecting the privacy of their users and be transparent about how and with whom the information will be used and shared. Development of EDM tools should consider protecting individual privacy while still advancing the research in this
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As research in the field of educational data mining has continued to grow, a myriad of data mining techniques have been applied to a variety of educational contexts. In each case, the goal is to translate raw data into meaningful information about the learning process in order to make better
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record data every time a learner submits a solution to a problem. They may collect the time of the submission, whether or not the solution matches the expected solution, the amount of time that has passed since the last submission, the order in which solution components were entered into the
260:– Researchers focus on the development and the evaluation of data mining techniques for effectiveness. A yearly international conference for researchers began in 2008. The wide range of topics in EDM ranges from using data mining to improve institutional effectiveness to student performance. 724:– Research in EDM may be specific to the particular educational setting and time in which the research was conducted, and as such, may not be generalizable to other institutions. Research also indicates that the field of educational data mining is concentrated in western countries and 201:– Through the various methods and applications of EDM, discovery of new and improvements to existing models is possible. Examples include illustrating the educational content to engage learners and determining optimal instructional sequences to support the student's learning style. 457:. In particular, this method is beneficial to educators in understanding usage information and effectiveness in course activities. Key applications for the distillation of data for human judgment include identifying patterns in student learning, behavior, opportunities for 759:– It is unknown how widespread the adoption of EDM is and the extent to which institutions have applied and considered implementing an EDM strategy. As such, it is unclear whether there are any barriers that prevent users from adopting EDM in their educational settings. 149:
in 2009, the Journal of Educational Data Mining, for sharing and disseminating research results. In 2011, EDM researchers established the International Educational Data Mining Society to connect EDM researchers and continue to grow the field.
681:). The goal for contestants was to design an algorithm that, after learning from the provided data, would make the most accurate predictions from new data. The winners submitted an algorithm that utilized feature generation (a form of 643: 397:, the created model enables the analysis between new predictions and additional variables in the study. In many cases, discovery with models uses validated prediction models that have proven generalizability across contexts. 250:– Educators attempt to understand the learning process and the methods they can use to improve their teaching methods. Educators can use the applications of EDM to determine how to organize and structure the 187:, this goal can be achieved by creating student models that incorporate the learner's characteristics, including detailed information such as their knowledge, behaviours and motivation to learn. The 529:
learning environments also suggests that data mining can be useful. Data mining can be used to help provide personalized content to mobile users, despite the differences in managing content between
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features of data, which for educational data mining, is used to support the development of the prediction model. Classification helps expedite the development of the prediction model, tremendously.
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R. Baker (2010) Data Mining for Education. In McGaw, B., Peterson, P., Baker, E. (Eds.) International Encyclopedia of Education (3rd edition), vol. 7, pp. 112-118. Oxford, UK: Elsevier.
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Considerable amounts of EDM work are published at the peer-reviewed International Conference on Educational Data Mining, organized by the International Educational Data Mining Society.
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and contextual variables in the learning environment. Further discovery of broad and specific research questions across a wide range of contexts can also be explored using this method.
118:, and the effect of instructional strategies embedded within various learning environments. These analyses provide new information that would be difficult to discern by looking at the 728:
and subsequently, other countries and cultures may not be represented in the research and findings. Development of future models should consider applications across multiple contexts.
284:) is discovering relationships in data. This involves searching through a repository of data from an educational environment with the goal of finding consistent relationships between 514:. Data mining tools can be used to customize learning activities for each user and adapt the pace in which the student completes the course. This is in particularly beneficial for 71:
Educational data mining refers to techniques, tools, and research designed for automatically extracting meaning from large repositories of data generated by or related to people's
51:, in order to discover new insights about how people learn in the context of such settings. In doing so, EDM has contributed to theories of learning investigated by researchers in 1694:
Yu, Hsaing-Fu; Lin, Chih-Jen; Lin, Hsuan-Tien; Lin, Shou-De; Wei, Yin-Hsuan; Weng, Jui-Yu; Change, Chun-Fu; Yan, En-Syu; McKenzie, Todd; Lou, Jing-Kai; Hsieh, Hsun-Ping (2010).
673:'s KDD Cup was conducted using data from an educational setting. The data set was provided by the DataShop, and it consisted of over 1,000,000 data points from students using a 661:
published the first Handbook of Educational Data Mining. This resource was created for those that are interested in participating in the educational data mining community.
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C. Romero, S. Ventura. Educational Data Mining: A Review of the State-of-the-Art. IEEE Transactions on Systems, Man, and Cybernetics, Part C: Applications and Reviews. 40(
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During phases 3 and 4, data is often visualized or in some other way distilled for human judgment. A large amount of research has been conducted in best practices for
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A list of the primary applications of EDM is provided by Cristobal Romero and Sebastian Ventura. In their taxonomy, the areas of EDM application are:
1695: 158: 138:. In 2008, a group of researchers established what has become an annual international research conference on EDM, the first of which took place in 1400: 1128: 510:. Moodle contains usage data that includes various activities by users such as test results, amount of readings completed and participation in 1738: 572: 114:. EDM leverages both types of data to discover meaningful information about different types of learners and how they learn, the structure of 83:, how many times they accessed it, and how many minutes the learning object was displayed on the user's computer screen. As another example, 1089: 47:). At a high level, the field seeks to develop and improve methods for exploring this data, which often has multiple levels of meaningful 670: 390: 1114:
Azarnoush, Bahareh, et al. "Toward a Framework for Learner Segmentation." JEDM-Journal of Educational Data Mining 5.2 (2013): 102-126.
431:, data is distilled to enable humans to identify well-known patterns, which may otherwise be difficult to interpret. For example, the 876: 401: 285: 565:
offered a free online course on "Big Data in Education" that taught how and when to use key methods for EDM. This course moved to
435:, classic to educational studies, is a pattern that clearly reflects the relationship between learning and experience over time. 88:
interface, etc. The precision of this data is such that even a fairly short session with a computer-based learning environment (
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G. Siemens, R.S.j.d. Baker (2012). "Learning analytics and educational data mining: Towards communication and collaboration".
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With the introduction of public educational data repositories in 2008, such as the Pittsburgh Science of Learning Centre's (
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New EDM applications will focus on allowing non-technical users use and engage in data mining tools and activities, making
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activities in educational settings. Quite often, this data is extensive, fine-grained, and precise. For example, several
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and processing more accessible for all users of EDM. Examples include statistical and visualization tools that analyzes
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in the summer of 2015, and has continued to run on edX annually since then. A course archive is now available online.
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method provides. For the use of education data mining, data is distilled for human judgment for two key purposes,
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decisions about the design and trajectory of a learning environment. Thus, EDM generally consists of four phases:
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Many EDM papers are routinely published in related conferences, such as Artificial Intelligence and Education,
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Baker, R.S.; Yacef, K (2009). "The state of educational data mining in 2009: A review and future visions".
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In the Discovery with Model method, a model is developed via prediction, clustering or by human reasoning
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and then used as a component in another analysis, namely in prediction and relationship mining. In the
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Romero, Cristobal; Ventura, Sebastian (2007). "Educational data mining: A survey from 1995 to 2005".
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and visually appealing way in order to understand the large amounts of education data and to support
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and relationship mining are considered universal methods across all types of data mining; however,
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There are four main users and stakeholders involved with educational data mining. These include:
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Romero, Cristobal; Ventura, Sebastian (January–February 2013). "WIREs Data Mining Knowl Discov".
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Constructing courseware – EDM can be applied to course management systems such as open source
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Key applications of this method include discovering relationships between student behaviors,
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Humans can make inferences about data that may be beyond the scope in which an automated
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While the analysis of educational data is not itself a new practice, recent advances in
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12th International Conference on Educational Data Mining] (2019) – MontrΓ©al, QC, Canada
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4th International Conference on Educational Data Mining (2011) – Eindhoven, Netherlands
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3rd International Conference on Educational Data Mining (2010) – Pittsburgh, PA, USA
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Proceedings of the 2nd International Conference on Learning Analytics and Knowledge
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11th International Conference on Educational Data Mining] (2018) – Buffalo, NY, USA
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9th International Conference on Educational Data Mining] (2016) – Raleigh, NC, USA
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6th International Conference on Educational Data Mining (2013) – Memphis, TN, USA
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1st International Conference on Educational Data Mining (2008) – Montreal, Canada
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The goal of this method is to summarize and present the information in a useful,
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EDM papers are also published in the Journal of Educational Data Mining (JEDM).
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by building and incorporating student models, the field of EDM research and the
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14th International Conference on Educational Data Mining (2021) – Paris, France
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10th International Conference on Educational Data Mining] (2017) – Wuhan, China
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8th International Conference on Educational Data Mining] (2015) – Madrid, Spain
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5th International Conference on Educational Data Mining (2012) – Chania, Greece
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2nd International Conference on Educational Data Mining (2009) – Cordoba, Spain
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Predictions are used to support decision-making processes and policy decisions.
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7th International Conference on Educational Data Mining (2014) – London, UK
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may contain a temporally ordered list of courses taken by the student, the
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13th International Conference on Educational Data Mining] (2020) – Virtual
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are considered more prominent approaches within educational data mining.
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As interest in EDM continued to increase, EDM researchers established an
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In other cases, the data is less fine-grained. For example, a student's
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method use, the created model's predictions are used to predict a new
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30 minutes) may produce a large amount of process data for analysis.
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Wiley Interdisciplinary Reviews: Data Mining and Knowledge Discovery
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for identifying such relationships have been utilized, including
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U.S. Department of Education, Office of Educational Technology.
161:(NCES), public data sets have made educational data mining more 154: 1163:
Romero, C.; Ventura, S.; Pechenizkiy, M.; Baker, R. S. (2010).
1122: 1120: 1696:"Feature Engineering and Classifier Ensemble for KDD Cup 2010" 566: 176:
and Kalina Yacef identified the following four goals of EDM:
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and their influence on learning outcomes and productivity.
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Advancing scientific knowledge about learning and learners
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to information generated from educational settings (e.g.,
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and labeling data for future uses in prediction models.
110:, and when the student selected or changed his or her 1733: 1731: 1729: 1727: 242:these groups through developing actionable models. 992: 990: 280:The first phase of the EDM process (not counting 63:, and the two have been compared and contrasted. 357:Of the general categories of methods mentioned, 338:about future events in the learning environment. 1022: 1020: 1018: 1016: 1014: 1012: 644:User Modeling, Adaptation, and Personalization 207:that can be achieved through learning systems. 479:Providing feedback for supporting instructors 181:Predicting students' future learning behavior 8: 1158: 1156: 334:Validated relationships are applied to make 205:Studying the effects of educational support 165:and feasible, contributing to its growth. 939:http://educationaldatamining.org/EDM2008/ 159:National Center for Education Statistics 27:field concerned with the application of 999:JEDM-Journal of Educational Data Mining 963: 961: 959: 957: 955: 953: 951: 949: 947: 816: 491:Detecting undesirable student behaviors 408:Distillation of data for human judgment 371:Distillation of Data for Human Judgment 59:. The field is closely tied to that of 323:Discovered relationships must then be 199:Discovering or improving domain models 573:Teachers College, Columbia University 7: 920: 918: 916: 845: 843: 841: 1165:Handbook of educational data mining 671:Association for Computing Machinery 518:with varying levels of competency. 14: 1351:. 20 October 2011. Archived from 1092:. Industry Canada. Archived from 191:of the learner and their overall 1064:Expert Systems with Applications 195:with learning are also measured. 106:that the student earned in each 710:for all stakeholders involved. 485:Predicting student performance 1: 1303:www.educationaldatamining.org 1278:www.educationaldatamining.org 1326:. 2011-10-20. Archived from 640:Intelligent Tutoring Systems 482:Recommendations for students 85:intelligent tutoring systems 45:intelligent tutoring systems 970:"Data Mining for Education" 901:"educationaldatamining.org" 825:"EducationalDataMining.org" 790:Glossary of education terms 77:learning management systems 1792: 1076:10.1016/j.eswa.2006.04.005 318:sequential pattern mining 659:Taylor and Francis Group 1229:"Big Data in Education" 1204:"Big Data in Education" 1179:"Big Data in Education" 869:10.1145/2330601.2330661 683:representation learning 521:Planning and scheduling 497:Social network analysis 314:association rule mining 310:social network analysis 17:Educational data mining 1776:Educational psychology 975:. oxford, UK: Elsevier 941:" Retrieved 2013-09-04 785:Educational technology 579:in Learning Analytics. 226:Users and stakeholders 132:educational technology 53:educational psychology 475:visualization of data 383:knowledge engineering 377:Discovery with models 367:Discovery with Models 863:. pp. 252–254. 697:Costs and challenges 442:for the purposes of 136:research conferences 1771:Applied data mining 1407:on 29 December 2013 1254:www.tc.columbia.edu 427:For the purpose of 395:relationship mining 157:) DataShop and the 1589:on 22 January 2022 1433:on 30 January 2014 1330:on 20 October 2011 795:Learning analytics 651:Chapman & Hall 584:Publication venues 327:in order to avoid 183:– With the use of 61:learning analytics 1615:on 15 August 2021 1459:on 8 October 2014 1041:10.1002/widm.1075 928:), 601-618, 2010. 691:Bayesian networks 561:In October 2013, 512:discussion forums 494:Grouping students 393:. 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Archived from 1133: 1124: 1115: 1112: 1106: 1105: 1103: 1101: 1096:on 13 April 2014 1086: 1080: 1079: 1059: 1053: 1052: 1024: 1007: 1006: 994: 985: 984: 982: 980: 974: 965: 942: 935: 929: 922: 911: 910: 908: 907: 897: 891: 890: 856: 850: 847: 836: 835: 833: 832: 821: 800:Machine learning 721:Generalizability 525:New research on 488:Student modeling 347:visualizing data 185:student modeling 147:academic journal 140:Montreal, Quebec 116:domain knowledge 33:machine learning 1791: 1790: 1786: 1785: 1784: 1782: 1781: 1780: 1761: 1760: 1759: 1758: 1748: 1746: 1737: 1736: 1725: 1715: 1713: 1712:on 3 March 2022 1709: 1698: 1693: 1692: 1688: 1678: 1676: 1675:on 26 June 2010 1665:"PLCS DataShop" 1663: 1662: 1658: 1648: 1646: 1645:on 15 July 2010 1633: 1632: 1628: 1618: 1616: 1607: 1606: 1602: 1592: 1590: 1581: 1580: 1576: 1566: 1564: 1555: 1554: 1550: 1540: 1538: 1529: 1528: 1524: 1514: 1512: 1503: 1502: 1498: 1488: 1486: 1477: 1476: 1472: 1462: 1460: 1451: 1450: 1446: 1436: 1434: 1425: 1424: 1420: 1410: 1408: 1399: 1398: 1394: 1384: 1382: 1373: 1372: 1368: 1358: 1356: 1347: 1346: 1342: 1333: 1331: 1322: 1321: 1317: 1307: 1305: 1299:"EDM'09 - Home" 1297: 1296: 1292: 1282: 1280: 1272: 1271: 1267: 1258: 1256: 1248: 1247: 1243: 1233: 1231: 1227: 1226: 1222: 1212: 1210: 1202: 1201: 1197: 1187: 1185: 1177: 1176: 1172: 1162: 1161: 1154: 1144: 1142: 1141:on 11 June 2014 1138: 1131: 1126: 1125: 1118: 1113: 1109: 1099: 1097: 1088: 1087: 1083: 1061: 1060: 1056: 1026: 1025: 1010: 996: 995: 988: 978: 976: 972: 967: 966: 945: 936: 932: 923: 914: 905: 903: 899: 898: 894: 879: 858: 857: 853: 848: 839: 830: 828: 823: 822: 818: 813: 766: 716: 699: 675:cognitive tutor 667: 586: 558: 550:social networks 546:data collection 467: 455:decision making 410: 402:characteristics 379: 355: 353:Main approaches 306:factor analysis 273: 239:online learning 228: 189:user experience 171: 128: 81:learning object 69: 12: 11: 5: 1789: 1787: 1779: 1778: 1773: 1763: 1762: 1757: 1756: 1745:. 18 June 2013 1723: 1686: 1656: 1635:"KDD Cup 2010" 1626: 1600: 1574: 1563:on 13 May 2022 1548: 1537:on 13 May 2022 1522: 1496: 1485:on 13 May 2022 1470: 1444: 1418: 1392: 1366: 1340: 1315: 1290: 1265: 1241: 1220: 1195: 1170: 1152: 1116: 1107: 1081: 1070:(1): 135–146. 1054: 1008: 986: 943: 930: 912: 892: 877: 851: 837: 815: 814: 812: 809: 808: 807: 802: 797: 792: 787: 782: 777: 772: 765: 762: 761: 760: 754: 746: 742:administrators 738:online privacy 729: 715: 712: 698: 695: 687:random forests 666: 663: 633: 632: 629: 626: 623: 620: 617: 614: 611: 608: 605: 602: 599: 596: 593: 585: 582: 581: 580: 570: 557: 554: 531:mobile devices 523: 522: 519: 516:online courses 504: 498: 495: 492: 489: 486: 483: 480: 477: 466: 463: 433:learning curve 429:identification 422:classification 418:identification 409: 406: 378: 375: 354: 351: 343: 342: 339: 332: 321: 294:classification 282:pre-processing 272: 269: 268: 267: 264:Administrators 261: 255: 243: 227: 224: 223: 222: 208: 202: 196: 170: 167: 127: 124: 112:academic major 68: 65: 13: 10: 9: 6: 4: 3: 2: 1788: 1777: 1774: 1772: 1769: 1768: 1766: 1744: 1740: 1734: 1732: 1730: 1728: 1724: 1708: 1704: 1697: 1690: 1687: 1674: 1670: 1666: 1660: 1657: 1644: 1640: 1636: 1630: 1627: 1614: 1610: 1604: 1601: 1588: 1584: 1578: 1575: 1562: 1558: 1552: 1549: 1536: 1532: 1526: 1523: 1510: 1506: 1500: 1497: 1484: 1480: 1474: 1471: 1458: 1454: 1448: 1445: 1432: 1428: 1422: 1419: 1406: 1402: 1396: 1393: 1381:on 8 May 2013 1380: 1376: 1370: 1367: 1355:on 9 May 2021 1354: 1350: 1344: 1341: 1329: 1325: 1319: 1316: 1304: 1300: 1294: 1291: 1279: 1275: 1269: 1266: 1255: 1251: 1245: 1242: 1230: 1224: 1221: 1209: 1205: 1199: 1196: 1184: 1180: 1174: 1171: 1166: 1159: 1157: 1153: 1137: 1130: 1123: 1121: 1117: 1111: 1108: 1095: 1091: 1085: 1082: 1077: 1073: 1069: 1065: 1058: 1055: 1050: 1046: 1042: 1038: 1034: 1030: 1023: 1021: 1019: 1017: 1015: 1013: 1009: 1004: 1000: 993: 991: 987: 971: 968:Baker, Ryan. 964: 962: 960: 958: 956: 954: 952: 950: 948: 944: 940: 934: 931: 927: 921: 919: 917: 913: 902: 896: 893: 888: 884: 880: 878:9781450311113 874: 870: 866: 862: 855: 852: 846: 844: 842: 838: 826: 820: 817: 810: 806: 803: 801: 798: 796: 793: 791: 788: 786: 783: 781: 778: 776: 773: 771: 768: 767: 763: 758: 755: 752: 751: 747: 743: 739: 735: 734: 730: 727: 723: 722: 718: 717: 713: 711: 709: 705: 696: 694: 692: 688: 684: 680: 676: 672: 669:In 2010, the 664: 662: 660: 656: 652: 647: 645: 641: 636: 630: 627: 624: 621: 618: 615: 612: 609: 606: 603: 600: 597: 594: 591: 590: 589: 583: 578: 574: 571: 568: 564: 560: 559: 555: 553: 551: 547: 542: 540: 536: 533:and standard 532: 528: 520: 517: 513: 509: 505: 503: 499: 496: 493: 490: 487: 484: 481: 478: 476: 473:Analysis and 472: 471: 470: 464: 462: 460: 459:collaboration 456: 452: 447: 445: 441: 438:Data is also 436: 434: 430: 425: 423: 419: 415: 407: 405: 403: 398: 396: 392: 388: 384: 376: 374: 372: 368: 364: 360: 352: 350: 348: 340: 337: 333: 330: 326: 322: 319: 315: 311: 307: 303: 299: 295: 291: 287: 283: 279: 278: 277: 270: 265: 262: 259: 256: 253: 249: 248: 244: 240: 236: 233: 232: 231: 225: 220: 216: 212: 209: 206: 203: 200: 197: 194: 190: 186: 182: 179: 178: 177: 175: 174:Ryan S. Baker 168: 166: 164: 160: 156: 151: 148: 143: 141: 137: 133: 125: 123: 121: 117: 113: 109: 105: 101: 98: 93: 91: 86: 82: 78: 74: 66: 64: 62: 58: 54: 50: 46: 42: 38: 34: 30: 26: 22: 18: 1747:. Retrieved 1743:EdTechReview 1742: 1714:. Retrieved 1707:the original 1702: 1689: 1677:. Retrieved 1673:the original 1668: 1659: 1647:. Retrieved 1643:the original 1638: 1629: 1617:. Retrieved 1613:the original 1603: 1591:. Retrieved 1587:the original 1577: 1565:. Retrieved 1561:the original 1551: 1539:. Retrieved 1535:the original 1525: 1513:. Retrieved 1509:the original 1499: 1487:. Retrieved 1483:the original 1473: 1461:. Retrieved 1457:the original 1447: 1435:. Retrieved 1431:the original 1421: 1409:. Retrieved 1405:the original 1395: 1383:. Retrieved 1379:the original 1369: 1357:. Retrieved 1353:the original 1343: 1332:. Retrieved 1328:the original 1318: 1306:. Retrieved 1302: 1293: 1281:. Retrieved 1277: 1268: 1257:. Retrieved 1253: 1244: 1232:. Retrieved 1223: 1211:. 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Index

research
data mining
machine learning
statistics
universities
intelligent tutoring systems
hierarchy
educational psychology
learning sciences
learning analytics
learning
learning management systems
learning object
intelligent tutoring systems
university
transcript
grade
course
academic major
domain knowledge
raw data
educational technology
research conferences
Montreal, Quebec
academic journal
PSLC
National Center for Education Statistics
accessible
Ryan S. Baker
student modeling

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