輔助任務增強的知識追蹤方法
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關鍵詞：智慧教育；知識追蹤；輔助任務；注意力機制
中圖分類號：TP391 文獻標志碼：A 文章編號：1001-3695（2025）07-023-2096-07
doi： 10.19734/j . issn.1001-3695.2024.10.0448
Abstract：Knowledge tracingisaneffctiveway toachievesmarteducation，asitasistsstudents intimelyadjustingtheir learning strategiesbyasesing theirlearning status.Theexisting knowledgetracing methods stillhaveshortcomings indealing withthe nternalrelationshipbetweenexercisesandknowledgeconceptsandobtaining students’personalized knowledge level. Toaddressthisissue，thispaperproposed anauxiliarytask-enhanced knowledge tracing（ATEKT）method.Firstly，this paper usedthegroupcalculationmethodandfrequencycalculationmethodtocalculatethedificultyof theexercise，thediscriminationoftheexercise，andthenumberofanswers totherelevantknowledgepoint exercises，andotainedtheirembeddedrepresentation.Secondly，itpresentedtwoauxiliarytasks，exercisetaging predictiontasksandpriorknowledge predictiontasksto dynamicallyaess therelationshipsbetweenexercisesandknowledge points，whileestimatingstudents'knowledgelevelsfrom historicalresponserecords.Finall，theauxiliarytaskslearnedthecharacteristicsof theoptimizationprocesstoenhance knowledge tracing model predicts.Comparedwithsevenknowledge tracing modelsonthreepublicdatasetssuchas ASSIST2009，ASSIST2017 and EdNet，the AUC and ACC of the proposed method are increased by 2.4% to 15.5% and （204 2.0% to 9.9% respectively.The experimental results show that the proposed method can efectively extract information related to knowledgetracing tasks，and itsperformanceismoresuperior.Meanwhile，ablationexperimentsalsodemonstrate the effectivenessofdifferentauxiliarytasks.
Keywords：intelligent education；knowledge tracing；auxiliary task；attention mechanisn
0 引言
智慧教育是指利用現代信息技術、教育方法和心理學原理等多種手段，實現教育過程個性化、智能化和高效化的一種新型教育模式1。（剩余15715字）