統計學術演講公告
統計碩士學位學程將於105年11月09日(星期三)舉辦統計學術演講，
邀請到臺北大學統計系黃怡婷教授兼系主任蒞臨演講，講題為「Finding the optimal threshold of a parametric ROC Curve under a continuous diagnostic measurement」。
歡迎對於此議題有興趣的師生同仁參加。
講題：Finding the optimal threshold of a parametric ROC Curve under a continuous diagnostic measurement
講員：黃怡婷教授兼系主任 臺北大學統計系
時間：11月09日(星期三) 中午12：30~2：00
地點：臺灣大學校總區博雅教學館405講堂
費用：免費
名額：40位
摘要：
Comparing the sensitivity and specificity with the status of respondents are used to measure the accuracy of a binary diagnostic test easily. When the result of a diagnostic test is continuous, the assessment of accuracy depends on a specified threshold. The receiver operating characteristic (ROC) curve, which includes all possible combinations of sensitivity and specificity, provides an appropriate measure for evaluating the overall accuracy of the diagnostic test. Nevertheless, in practice, a cutoff value is still required to make easier its clinical usage easier. The determination of a proper cutoff value depends on how important the practitioner views the specificity and sensitivity. Given particular values of specificity and sensitivity, this paper derives the optimal cutoff value under two parametric assumptions on the outcomes of the diagnostic test. Because the optimal cutoff value does not have a closed form, the numerical results are tabulated for some parameter settings to find the optimal cutoff value. Finally, real data are employed to illustrate the use of the proposed method.
活動報名網址：https://info2.ntu.edu.tw/register/flex/main.html?actID=2016C100_01&sesID=2
聯絡人：張仲凱
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