這題的疑問同上題。我們學(xué)的copula是將兩個分布合成一個三維分布求違約概率,為什么題目里一直提到copula的作用是“計算出兩變量的相關(guān)性”?請老師分別解釋一下“Copula enables the structures of correlation between variables to be calculated separately from their marginal distributions. ”以及“A copula is a risk measure that extracts the dependence structure from the joint distribution function created from several continuous marginal distribution functions.”這兩句話應(yīng)該說的是差不多的意思
選項A“Copula enables the structures of correlation between variables to be calculated separately from their marginal distributions.”說的不是Copula能在兩個變量的邊際分布中把他們的相關(guān)性分離計算出來的意思嘛,說的是在將兩個映射后的正態(tài)分布整合成Copula時所選用的相關(guān)性的計算方式嗎?跟您這里回答的算違約概率沒關(guān)系啊
market risk 百題 答案很繞 請逐一說明下每個選項哪些地方是對的 哪些地方不對
bootstrap法既可以估計VaR又可以估計ES,其中是如何估計ES的哪?
老師,您好,途中綠色部分是什么意思?綠色那整段,1、2、3都是什么意思?
老師,在貼現(xiàn)的時候,用的利率為什么不是6%呢,按照二叉樹的意思,today的利率是5%,有0.8024的可能性在六個月后利率到5.5%,那這個5.5%指的是today到六個月的利率,還是六個月到一年的利率?如果指的是六個月到一年的,那最后one year的時候是6%,應(yīng)該表示一年到一年半的利率,那求swap的payoff怎么能用6%呢,不是應(yīng)該用5.5%嗎?就是題干中,是不是最后一列利率表示時點,前面的利率表示區(qū)間呢?辛苦老師解釋一下~
“Spearman’s rank correlation and Kendall’s τ are ordinal correlation coefficients that should not be used with cardinal financial variables because they underestimate risk by ignoring the impact of outliers.”這個cardinal financial variables是什么意思呢?
A functionally independent corporate operational risk function is desirable in a bank but is not necessary for an effective control environment. This is especially true for a small bank, which might roll all risk management activities into one risk management group (i.e., not segregated by type of risk). An effective control environment should include the following five components: (1) a control environment, (2) risk assessment, (3) control activities, (4) information and communication, and (5) monitoring activities.
麻煩老師重點解釋C,其他的選項略帶解釋
不太明白年和天的轉(zhuǎn)化 為什么不能先算出年的VaR然后轉(zhuǎn)化為天
bootstrap的缺點無法考慮異常值該如何理解,我有些忘記了
CDS 的exposure 是指buyer 還是 seller 的exposure, credit risk PPT page 77
老師,文中老師紅筆寫的EA是哪個縮寫呀?
為什么這樣是sell一個6x12的FRA呢
Market Risk 第15頁, 如圖的1、2、5不明白,同時,1、2可以用公式解釋下嗎?
程寶問答