Using Past Data to Warm Start Active Machine Learning: Does Context Matter?
Using Past Data to Warm Start Active Machine Learning: Does Context Matter?
复制标题
使用过去的数据来热启动主动机器学习:上下文重要吗?
DOI:
10.1145/3448139.3448154
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Heffernan, Neil
中科院分区:
文献类型:
--
作者:
Karumbaiah, Shamya;Lan, Andrew;Nagpal, Sachit;Baker, Ryan S.;Botelho, Anthony;Heffernan, Neil
Despite the abundance of data generated from students’ activities in virtual learning environments, the use of supervised machine learning in learning analytics is limited by the availability of labeled data, which can be difficult to collect for complex educational constructs. In a previous study, a subfield of machine learning called Active Learning (AL) was explored to improve the data labeling efficiency. AL trains a model and uses it, in parallel, to choose the next data sample to get labeled from a human expert. Due to the complexity of educational constructs and data, AL has suffered from the cold-start problem where the model does not have access to sufficient data yet to choose the best next sample to learn from. In this paper, we explore the use of past data to warm start the AL training process. We also critically examine the implications of differing contexts (urbanicity) in which the past data was collected. To this end, we use authentic affect labels collected through human observations in middle school mathematics classrooms to simulate the development of AL-based detectors of engaged concentration. We experiment with two AL methods (uncertainty sampling, L-MMSE) and random sampling for data selection. Our results suggest that using past data to warm start AL training could be effective for some methods based on the target population's urbanicity. We provide recommendations on the data selection method and the quantity of past data to use when warm starting AL training in the urban and suburban schools.
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DOI:
--
发表时间:
2019
期刊:
Educational Data Mining
影响因子:
--
作者:
Tsung;R. Baker;Christoph Studer;N. Heffernan;Andrew S. Lan
通讯作者:
Andrew S. Lan
DOI:
10.1111/bjet.12156
发表时间:
2014
期刊:
Br. J. Educ. Technol.
影响因子:
--
作者:
Jaclyn L. Ocumpaugh;R. Baker;S. M. Gowda;N. Heffernan;Cristina Heffernan
通讯作者:
Cristina Heffernan
影响因子:
11.2
作者:
Shamya Karumbaiah;R. Baker;Jaclyn L. Ocumpaugh;J. Andres
通讯作者:
J. Andres
DOI:
10.1504/ijlt.2009.028807
发表时间:
2009
期刊:
Int. J. Learn. Technol.
影响因子:
--
作者:
Scott W. McQuiggan;James C. Lester
通讯作者:
James C. Lester
DOI:
10.35542/osf.io/ad39g
发表时间:
2020
期刊:
2023 6th International Conference on Information and Communications Technology (ICOIACT)
影响因子:
--
作者:
R. Baker;Erin Walker;A. Ogan;Michael A. Madaio
通讯作者:
Michael A. Madaio