区分度

区分度可以通过调整难度的方法来控制，即难度影响区分度。

Discrimination can be controlled by adjusting the difficulty .

第七单元对数学试卷进行了质量分析，对难度、信度、效度、区分度等评价指标做了量化性的说明。

To degree of difficulty , reliability , validity , discrimination , etc. have done a quantitative evaluation .

计算结果与传统单阶段DEA模型进行比较分析，可以发现基于网络DEA方法的评价模型不仅对评价结果的区分度更高，而且更能反映供应链实际运作情况。

By comparing the result with that generated by traditional single-stage DEA model , we can find that network-based DEA model not only has high degree of distinction , but also can reflect the actual operational status of supply chain .

经典测验理论（CTT）的主要缺点有：对测题难度、区分度及测验信度的估计依赖于被试组，对被试能力的估计依赖于所使用的测验题目，只提供平均测量精度等。

Classical Test Theory ( CTT ) has many defects , namely the estimations of its parameters depend on the subjects , the estimation of ability level depends on the items , and it offers only average precision of estimation .

结论试题难度适中、区分度和信度好。繁殖性能适中。考试的难度合适；

Conclusion This test had moderate difficulty , and satisfactory discrimination and reliability .

方法采用信度、效度、区分度对综合评价指标体系进行评价。

Methods Using reliability , validy and discern capability evaluated the comprehensive evaluation indexes system .

根据所得结果，从试题的难度、区分度信度及效度方面进行了质量评价。

Quality evaluation was conducted in degree of difficulty , distinguishability , reliability , validity .

实验结果表明，该方法对增加合法文本与非法文本的区分度有较明显的效果。

Results show that the method has prominent effect in differentiating legit and illegitimate content .

项目分析结果表明，各项目的鉴别力指数在0.2以上，区分度较好。

The result of item analysis shows that most of the index of item discrimination were above 0.2 .

区分度系数较低的是填空题（0.15）和单项选择题（0.19），其余的区分度都>0.4；

Items with lower discrimination coefficients were also blank-filling ones ( 0.15 ) and multiple-choice ones ( 0.19 ) .

方法难度指数、区分度指数是按难度、区分度的计算方法，对大学生艾滋病知识问卷进行难度、区分度分析与评价。

Methods The methods of calculating the power index and the discrimination index were used to assess AIDS knowledge questionnaire .

信度、效度、难度、区分度为检验试题库试题质量好坏的指标。

Reliability , validity , degree of difficulty , distinguishability are four indexes to evaluate the quality of question bank .

结果：测验结果的数据分布接近正态，变异系数为38%，区分度较好；

RESULTS : ① The data were in normal distribution . Coefficient of variation was 38 % , with good discrimination .

区分度指数D的平均数为0.2934，标准差为0.1193。

The average of exponent D in distinction degree was ( 0.2934 ) and the standard deviation was ( 0.1193 ) .

本测验经过实测数据的验证，难度、区分度符合一般诊断性测验的要求。

7 % . The test is testified by difficulty , index of discrimination all accord with the command of common diagnosis test .

结果试题库试题既有一定难度、区分度，又有较高的信度和效度。

Results Some degree of difficulty and differentiation , as well as validity and reliability , were seen in the questions ' bank .

利用教育统计与测量的方法，对《高等数学》试卷进行定量化分析，并且用难度、区分度、（？）

In this paper the quantity analysis of test and test papers is discussed , by means of method of statistics and survey of education .

相对于经典测量理论，项目反应理论具有明显的优势，它所采用的项目参数（如：难度、区分度、猜测指数等），是一种不会受样本影响的指标。

The item parameter it used ( such as difficulty , distinction level and guessing index ) is a kind of index which not affected by samples .

本文采用数理统计方法，对试卷质量的评价问题从可靠性、难度、区分度及覆盖面等方面进行了探讨。

Y means of mathematical statistics , this paper makes an exploratory investigation on the quality evaluation of examination paper from reliability , difficulty , discrimination and coverage .

由于在红外图像中行人与背景的区分度要比可见光图像更为突出，因此基于红外图像的行人检测技术具有较大的潜力。

Pedestrian detection technology based on infrared images has a great potential because the discriminability of pedestrian against background in infrared images is more outstanding than visible spectrum images .

但是，信度系数值不够高，一些项目的区分度值和难易值度不理想，对评分效度构成了负面的影响。

However , the reliability coefficient is not so high . The discriminability and difficulty index of some items are not satisfactory , which contribute negatively to the scoring validity .

本文简述了电磁检测硬度的机理，利用电磁无损检测对钢轨双频淬火后的全长连续接触硬度检测进行测试研究，对钢轨纵向硬度的区分度已达铁道部部标准。

In this paper , the principle of electromagnetic nondestructive testing for the hardness was described . With the principle the hardness of the span rail by bifrequency hardened was tested .

在试题质量分析的基础上，对试题的难度、区分度、信度和效度建立了定量评价模型。

Based on the analysis of test paper quality , this paper constructs the evaluation model for difficult degree , differentiating degree , confident degree and effective degree of test paper .

以《普通物理学》考试为例，从试题分布、信度、效度、难度、区分度以及成绩分布等方面，论述了学科课程考试质量的量化评价方法。

Taking General Physics as an example , the author discusses the quantized evaluation of Physics examinations from their coverage , truth , effectiveness , difficulty , differentiation and distribution of the grades .

多元智能提高测试具有较好的理论构想，有良好的内在信度、结构效度、区分度、重测信度、效标关联效度等测量学特性。

Multiple intelligences to improve test has good theoretical conception , have good internal reliability and structural validity , degree of distinction , heavy reliability , efficiency standard test association validity etc metrology characteristics .

随后，对目标群体中进行抽样预测，通过频次分析、区分度分析、探索性因素分析等方法对项目进行更进一步的修改和删除，形成正式施测问卷。

Subsequently , the sample predicted target groups , and through frequency analysis , discrimination analysis , exploratory factor analysis method on the project for further modification and deletion , formed formal test scale .

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。

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 .

进行预试验，分析护理标准化病例试卷的信度、效度、难度、区分度等，并对学生考试成绩进行平均分、标准差、正态性检验等统计学分析。

By preliminary experiment , we analyzed the credibility , validity , difficulty , discriminate validity and so on , and statistically analyzed the testing score by average value , standard deviation , test of normality .

本文根据相关文献总结了26个初步的评价指标，然后运用专家访谈的方法对初选指标的效度、相关性、区分度分析，筛选出17个关键指标构建分包商综合评价体系。

This article applies the method of expert interview to analyze the validity , correlation and discrimination of the roughing index , and ultimately seventeen key indexes are elected to construct the comprehensive evaluation system of the subcontractor .

数字笔划走势特征提取简单、区分度高、对用户不敏感，实现了有限的资源条件下的高速识别，同时保证了方法的良好用户适应性；

The extrac - tion of stroke direction variation is simple , highly discriminable and insensitive to different users , implementing fast recognition under strict resource constraints , and the user adaptability is guaranteed at the same time .