共查询到19条相似文献，搜索用时 281 毫秒
1.
规则空间模型是一种基于统计模式识别和分类的认知诊断模型,能够提供关于考生作答模式与属性掌握情况的详细信息。在理论上,该模型解决了成就测验中测验单维性与项目单维性的问题,并发展出ACC曲线对项目反应理论进行了拓展;在实践中,规则空间模型可以用于指导测验项目的编制,为诊断教学提供信息,还能广泛应用于成就测验以外的心理与教育测量的各个领域。[编者按] 相似文献
2.
认知诊断通过分析被试的项目作答反应,推断被试的认知属性掌握状态,为学习困难学生设计补救教学提供了非常有价值的信息。本文作者在探讨了小学生多位数乘法计算能力的认知属性、编制了2份相同考核模式的认知诊断测验后,选择江西某小学310名高年级学生为被试,先施测第1份认知诊断测验,采用DINA模型,自编参数估计程序进行诊断,得到了每一个被试的属性掌握模式分类及全体被试在各个属性上的掌握情况。然后设计和实施补救教学,在实施补救教学后再施测第2份认知诊断测验以检验补救效果。研究发现：（1）该小学高年级学生对0XN运算法则、多位数乘以两位数的运算程序、乘法进位认知属性的掌握不太理想,特别是乘法进位。（2）属性掌握模式中属全部掌握模式的被试人数占86．47％,其余被试均分类于存在各种认知不足的掌握模式。（3）比较两份认知诊断测验报告,结果表明在认知诊断指导下的补救教学有针对性,补救后被试正确作答项目增多,属性掌握个数也有所增加,补救效果良好。 相似文献
3.
基于等级反应模型的属性层级方法和多级评分的广义距离法,是两种基于项目反应理论的多级评分的认知诊断方法。本文通过采用Monte Carlo方法模拟比较两种方法的优劣,发现在四种属性层级结构、四种被试作答失误率情况下,对发散型来说,多级评分的广义距离判别法相对更好;对无结构型来说,基于等级反应模型的属性层级方法是更好的选择;对收敛型和线型而言,被试作答失误率比较大时多级评分的广义距离判别法相对更合适,其他情况下两种方法诊断效果差不多。 相似文献
4.
5.
目的：运用规则空间模型诊断阅读障碍儿童的语音、字形阅读掌握模式。方法：采用个体取样的方式抽取阅读障碍儿童37名,同时以群体随机取样的方式抽取正常儿童88名,对所抽取被试施测根据属性编写的项目。采用规则空间模型分析被试的属性掌握模式和概率。结果：判归在典型属性掌握模式1、2．4、7的人数较多。结论：规则空间模型是一种有效的认知诊断模型,通过规则空间分析,可获得有关阅读障碍儿童的具体诊断信息。 相似文献
6.
随着心理测量理论的发展,潜在分类模型越来越多地受到国外研究者的关注,它能够通过分析考生的作答过程来探讨其潜在能力倾向,改变了以总分来评判学生能力的传统评价模式。首先探讨了作为该类模型基础的规则空间模型,然后综述了近年来国外有关潜在分类模型的研究,最后对该模型的研究现状进行了评价并对未来发展进行了展望。 相似文献
7.
8.
9.
为改善口腔修复学教学效果,提高学生通过国家执业医师考试的通过率,参照国家执业医师考试的要求,分别从教学内容、教学方法、多学科融合和教学组织形式等方面对口腔修复学进行了课程教学模式改革.通过课程教学模式改革,教学内容更加符合口腔修复学的发展趋势,课堂教学互动性更加活跃,学生发现问题和解决问题的能得到极大的提高. 相似文献
10.
11.
Regression-Based Artificial Neural Network Methodology In Response Surface Methodology 总被引：3，自引：0，他引：3
Response surface methodology (RSM) is an important tool for process parameter optimization, robust design and other quality improvement efforts. When the relationship between influential input variables and output response is very complex, it‘ s hard to find the real response surface using RSM. In recent years artificial neural network (ANN) has been used in RSM. But the classical ANN does not work well under the constraints of real applications. An algorithm of regression-based ANN(R-ANN) is proposed in this paper, which is a supplement to the classical ANN methodology. It makes network closer to the response surface, so that training time is reduced and robustness is strengthened. The procedure of improving ANN by regressions is described and the comparisons among R-ANN, RSM and classical ANN are computed graphically in three examples. Our research shows that the R-ANN methodology is a good supplement to the RSM and classical ANN methodology, which can yield lower standard error of prediction under conditions that the scope of experiment is rigidly restricted. 相似文献
12.
The person-fit literature assumes that aberrant response patterns could be a sign of person mismeasurement, but this assumption has rarely, if ever, been empirically investigated before. We explore the validity of test responses and measures of 10-year-old examinees whose response patterns on a commercial standardized paper-and-pencil mathematics test were flagged as aberrant. Validity evidence was collected through postexamination reflective interviews with 31 of the 80 pupils flagged as aberrant and their teachers, and teacher assessment (TA) judgments for the whole examination cohort of 674 examinees. Analysis suggested that interview-adjusted scores were significantly better fitting than expected by chance, but only some adjustments suggest serious mismeasurement. In addition, disagreement between TA and test scores was significantly greater for aberrant examinees, and partially predicted the interview adjustments. We conclude that person misfit statistics when combined with TA might be a useful antidote to mismeasurement, and we discuss the implications for assessment research and practice. 相似文献
13.
Once a differential item functioning (DIF) item has been identified, little is known about the examinees for whom the item functions differentially. This is because DIF focuses on manifest group characteristics that are associated with it, but do not explain why examinees respond differentially to items. We first analyze item response patterns for gender DIF and then illustrate, through the use of a mixture item response theory (IRT) model, how the manifest characteristic associated with DIF often has a very weak relationship with the latent groups actually being advantaged or disadvantaged by the item(s). Next, we propose an alternative approach to DIF assessment that first uses an exploratory mixture model analysis to define the primary dimension(s) that contribute to DIF, and secondly studies examinee characteristics associated with those dimensions in order to understand the cause(s) of DIF. Comparison of academic characteristics of these examinees across classes reveals some clear differences in manifest characteristics between groups. 相似文献
14.
15.
The purpose of this study is to apply the attribute hierarchy method (AHM) to a subset of SAT critical reading items and illustrate how the method can be used to promote cognitive diagnostic inferences. The AHM is a psychometric procedure for classifying examinees’ test item responses into a set of attribute mastery patterns associated with different components from a cognitive model. The study was conducted in two steps. In step 1, three cognitive models were developed by reviewing selected literature in reading comprehension as well as research related to SAT Critical Reading. Then, the cognitive models were validated by having a sample of students think aloud as they solved each item. In step 2, psychometric analyses were conducted on the SAT critical reading cognitive models by evaluating the model‐data fit between the expected and observed response patterns produced from two random samples of 2,000 examinees who wrote the items. The model that provided best data‐model fit was then used to calculate attribute probabilities for 15 examinees to illustrate our diagnostic testing procedure. 相似文献
16.
This paper makes an approach to the approximate optimum in structural design, which combines the global response surface (GRS)
based multivariate adaptive regression splines (MARS) with Move-Limit strategy (MLS). MARS is an adaptive regression process,
which fits in with the multidimensional problems. It adopts a modified recursive partitioning strategy to simplify high-dimensional
problems into smaller highly accurate models. MLS for moving and resizing the search sub-regions is employed in the space
of design variables. The quality of the approximation functions and the convergence history of the optimization process are
reflected in MLS. The disadvantages of the conventional response surface method (RSM) have been avoided, specifically, highly
nonlinear high-dimensional problems. The GRS/MARS with MLS is applied to a high-dimensional test function and an engineering
problem to demonstrate its feasibility and convergence, and compared with quadratic response surface (QRS) models in terms
of computational efficiency and accuracy. 相似文献
17.
根据项目教学法和《中医内科学课程课程特点,论述了项目教学法在中医内科学课程教学中实施的可行性与必要性,并结合具体案例阐述了项目教学法的实施步骤。依据教学实践情况和课程考核结果,归纳总结了项目教学法在中医内科学课程教学中的作用,指明项目教学法是一种能够有效克服传统教学模式弊端、增强学生学习主动性和能动性,提高学生临床实践能力的教学方法。 相似文献
18.
“内科护理学”是一门综合性应用学科,学好“内科护理学”是学好临床护理专业课程的关键。为探讨基于UMU移动互动平台“内科护理学”翻转课堂的教学实践效果,分别将2018级105名、2017级93名护理学专业学生作为实验组及对照组,2018级同学采用基于UMU移动平台的翻转课堂授课方式,2017级同学采用传统的课堂授课方式。结果显示,实验组学生的学习效果好于对照组,差异显著(P<0.05),94.3%的学生对该课程这种教学方式的改革表示满意。实践研究表明,基于UMU移动互动平台翻转课堂教学模式在“内科护理学”课程的教学中效果良好,值得推广应用。 相似文献