亞同學(xué)
2024-04-03 18:35第六題也辛苦詳細(xì)解答一下，看不懂意思
所屬：CFA Level II > Quantitative Methods 視頻位置 相關(guān)試題
來源： 視頻位置 相關(guān)試題
1個(gè)回答
Huang助教
2024-04-06 00:34
該回答已被題主采納
同學(xué)你好，
第六題題干給的是“Achler’s model training concern” ，在文章中找到他的擔(dān)憂“. Achler notices that the number of
start-ups that fail (majority class) is significantly larger than the number of the start-ups that are successful (minority class). Achler is concerned that because of class imbalance, the model will not be able to discriminate between start-ups that fail and start-ups that are successful。 擔(dān)憂的點(diǎn)是這兩個(gè)class的樣本大小不一樣，一個(gè)明顯多過另外一個(gè)。那解決辦法就是多的那個(gè)class就少抽一點(diǎn)。
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