中国考试
中國攷試
중국고시
CHINA EXAMINATIONS
2014年
11期
17-21
,共5页
试题质量%熵增值%难度%区分度
試題質量%熵增值%難度%區分度
시제질량%적증치%난도%구분도
Item quality%Increased Value of Entropy%Difficulty%Discrimination
难度和区分度是传统试题质量分析所采用的指标，而依据（难度，区分度）二维向量指标对试题质量进行排序需要主观权衡，从而造成了试题质量评判的不稳定性。基于此，根据信息熵理论，构建一种基于考生得分分布变化的客观试题质量指标“熵增值”。通过HSK阅读分测验的实证分析，“熵增值”的大小有效地反映了试题质量的优劣，其对应的难度和区分度指标符合经典测量理论的分析原则。最后采用模拟仿真的方式论证了“熵增值”和难度、区分度的相互影响关系。
難度和區分度是傳統試題質量分析所採用的指標，而依據（難度，區分度）二維嚮量指標對試題質量進行排序需要主觀權衡，從而造成瞭試題質量評判的不穩定性。基于此，根據信息熵理論，構建一種基于攷生得分分佈變化的客觀試題質量指標“熵增值”。通過HSK閱讀分測驗的實證分析，“熵增值”的大小有效地反映瞭試題質量的優劣，其對應的難度和區分度指標符閤經典測量理論的分析原則。最後採用模擬倣真的方式論證瞭“熵增值”和難度、區分度的相互影響關繫。
난도화구분도시전통시제질량분석소채용적지표，이의거（난도，구분도）이유향량지표대시제질량진행배서수요주관권형，종이조성료시제질량평판적불은정성。기우차，근거신식적이론，구건일충기우고생득분분포변화적객관시제질량지표“적증치”。통과HSK열독분측험적실증분석，“적증치”적대소유효지반영료시제질량적우렬，기대응적난도화구분도지표부합경전측량이론적분석원칙。최후채용모의방진적방식론증료“적증치”화난도、구분도적상호영향관계。
Difficulty and discrimination are traditional index in item analysis. To distinguish the quality of items and sequence the items basing on difficulty and discrimination need subjective weigh, so the instability of the items estimation cannot be avoided. So according to the information entropy theory, increased value of entropy is constructed as the index to measure the quality of items basing on the examinee score distribution. Through the empirical analysis of HSK reading test, the entropy value reflects the quality of items effectively; and they are consistent with the indexes in Classical Test Theory. In the end, It is showed that increased value of entropy is affected by difficulty and discrimination by using analog simulation.
