item difficulty

The item difficulty distribution and the discrimination of the subtest 2 are good , but the item difficulty distribution and the discrimination of the subtest 1 should be improved in further studies .

分测验二的项目难度分布比较合理，多数项目鉴别力较高，而分测验一的项目难度分布和项目鉴别力则有待于在今后的研究中进一步提高。

This study illustrates the inherent mechanism for spacing practice decision , through the combination of two parts of spacing practice decision and the comprehensive discussion on the effects of item difficulty and reward on spacing strategies selection and spaced allocation .

本研究通过结合间隔学习决策的两个部分，综合探讨项目难度与分值对间隔策略选择和间隔分配的影响，从而说明间隔学习决策的内在机制。

Item difficulty is one of the important item parameters .

题目难易度是一个重要的题目参数。

A Study on Predicting Item Difficulty in a Chinese Reading Comprehension Test Based on ANN

基于人工神经网络预测汉语阅读理解测验题目难易度的研究

Rasch Model Applied to Item Difficulty Calculation in EXCEL

在EXCEL中应用Rasch模型计算题目难度

Hypothesis of Relative Item Difficulty

测试项目的相对难度假设

The statistical model is put forward to test the accuracy of item difficulty indexes in the test papers given by the educational experts .

提出一个统计模型，用于检验试题库中由专家给出试题难度这一指标的准确性。

The Influence Factors on Item Difficulty of Chinese Physics Olympiad Exploring methods of the difficulty estimate of medical microbiology examination questions

全国中学生物理竞赛试题难度影响因素的研究医学微生物学试题难度预估方法的探索

The degree of math anxiety and the item difficulty affects the selection and implementation ( accuracy and reaction ) of the strategy .

数学焦虑程度与题目难度共同影响策略的选择和执行（正确率和反应时）。

This method does not need examinees : only through analyzing reading materials and stems can it predict the item difficulty of each item .

这种方法不需要依靠被试，只需对阅读理解文章及题干进行分析并提取变量，然后通过计算便可以预测出一个题目的难易度。

In the study , we adopt multiple regression analysis and linear logistic latent trait model to understand how cognitive component and its different level influence the item difficulty of number series completion problem .

在研究方法方面，采用了多元回归分析以及线性逻辑斯谛克潜在特质模型来了解项目的认知成分及其水平的不同结合对数字系列完成问题试题难度所造成的影响。

Taking reading comprehension tests in HSK as training and test dataset , this article successfully predicts item difficulty in that significant correlations are obtained between the actual and predicted item difficulties .

本文以汉语水平考试（KSK）的阅读理解文章及题目作为训练集和测试集，对汉语阅读理解测验的题目难易度进行了预测，预测得到的题目难易度和实际题目难易度存在显著的相关。

Problems are with two properties , difficulty and discrimination , item difficulty refers to the degree of difficulty , item discrimination refers to the candidates for different levels of identification with their advantages and disadvantages or the ability of the level .

难度和区分度是试题的两个重要属性。难度指试题的难易程度，区分度指试题对于不同水平的考生具有的鉴别其优劣或水平高低的能力。

The results of Monte Carlo simulation show that this new algorithm is more effective than traditional parameter estimation techniques on contributions to raise the capability of parameters recovery , especially to raise the precision of item difficulty and asymptote parameter estimates .

蒙特卡洛模拟结果显示，这种新的估计方法提高了估计值对真值的恢复能力，特别是提高了项目的难度和猜测度参数估计的精度。

While the strategy Returning to the Passage was affected by item difficulty , not by item types or text types , the strategy Clues in the Text was influenced by item types , not by item difficulty or text types .

回看只受项目难度不受项目或者篇章类型的影响，而文章线索只受项目类型不受项目难度或者篇章类型的影响。

In the present thesis , the author propose the hypothesis of relative item difficulty , which claims that the item difficulty value is relative to the individual factor ( s ) that may affect the test performance , including ability level , test strategies and other cognitive factors .

笔者提出了相对难度假设：任何一个测试项目，其难度值只是相对于影响测试过程的某（些）个性特征，如：语言能力、测试策略或其它认知心理特征。

As a typical language performance assessment , spoken test has relatively high validity , but some factors including candidates proficiency , item difficulty and rater effects are threatening the quality of scoring procedure . It might lead to scoring bias , which will exert negative impact on testing reliability .

口语测试作为一种典型的语言行为测试，尽管具有较高的测试效度，但由于评分受到许多因素的影响（如考生水平，题目难度，评分员效应等），容易产生偏差，影响测试信度。

Evaluating failure of structural sealant glazing is an important constituent portion of existing glass curtain walls , also , a key item and difficulty part of in-suit testing of existing hidden frame curtain wall .

结构密封胶装配玻璃的失效评估是既有玻璃幕墙现场安全评估的重要组成部分，也是既有隐框玻璃幕墙现场检测的重点和难点。

The all around competition events present balanced characteristics , the contest of this item fasten on difficulty and stability .

全能比赛呈均衡性发展特征，这一项目的竞争将会是单项难度与稳定性的争夺；

Item analysis : The difficulty of sub-tests ranged from 0.46 to 0.54 , most sub-tests were over 0.5 .

条目分析结果：各分测验难度在0.46～0.54，大多数分测验的难度值大于0.5。

The results show that : 1 . The self-build cognitive models are superior to other ones on predicting item attributes such as the item difficulty of the matrix , and so on .

研究结果表明：1、自建认知模型在对矩阵项目难度等项目属性的预测方面优于其它认知模型。

However , the validity studies on NMET are merely some qualitative analysis of content validity , item analysis , etc. and occasionally , there is some quantitative information such as item difficulty and discrimination .

但对于高考英语效度的研究不外乎内容效度，题目分析等定性分析，偶有定量研究出现，如试题的难度，区分度。

The other item selection method is a-stratified with content-blocking which stratified the item pool according to a - and b-parameters and the content specifications . It is to select an item that the difficulty of the item is matching the ability of the examinee being measured .

而按内容分块的a-分层方法是将题库中的题目按照a、b参数和内容属性分层，选择难度与当时能力估计值相匹配的题目。