1403/09/22
مهیار یوسفی

مهیار یوسفی

مرتبه علمی: دانشیار
ارکید:
تحصیلات: دکترای تخصصی
اسکاپوس:
دانشکده: دانشکده فنی مهندسی
نشانی:
تلفن:

مشخصات پژوهش

عنوان
تعیین اهداف اکتشافی به روش های نظارت شده و چالش های انتخاب نقاط آموزشی (ذخیره و غیر ذخیره)
نوع پژوهش
JournalPaper
کلیدواژه‌ها
Supervised algorithms Training sites Known deposit locations Non-deposit locations Balancing Mineral exploration targeting
سال
2021
مجله APPLIED GEOCHEMISTRY
شناسه DOI
پژوهشگران Mahyar Yousefi

چکیده

Selection of non-deposit sites is a challenging issue affecting the application of supervised algorithms for modeling mineral exploration targets. For this, equal number of deposit and non-deposit sites has been widely applied for training purposes. In this paper, we investigated the effect of changes in the number of non-deposit sites on the effectiveness of exploration targeting models while the number of deposit sites is constant. The results obtained demonstrated that exploration targeting models are affected by the ratio of non-deposit and deposit sites. Thus, balancing between the number of deposit and non-deposit sites is an efficient way to produce more-reliable exploration targets when supervised algorithms are applied for modeling. The idea of this research came from the fact that mineralization is a rare event, and therefore, in a region of interest number of nondeposit sites is much more than that of deposit events. To illustrate the procedure proposed, we used an exploration dataset of porphyry Cu mineralization in Chahargonbad area, SE Iran. A sequence application of selforganizing map and multilayer perceptron neural network algorithm was applied to better illustration of the changing effects of the number of non-deposit sites on the ensuing exploration targeting models.