Exam 14: Interest Rate Models in Continuous Time

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What is a differential equation?

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A differential equation establishes a relation between the rate of change of a function B(t) and its value at time t, B(t).

When dealing with a stochastic process what do we mean by a 'diffusion'?

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The diffusion term is the unpredictable component of the stochastic pro- cess, due to the lack of predictability of the Brownian motion dXt.

What is the Martingale property?

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Show that: Show that:

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Why do we need continous time models?

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What are the properties of a Brownian motion?

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What is a Brownian motion?

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What is Ito's Lemma?

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What is a solution to an Ordinary Differential Equation?

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When dealing with a stochastic process what do we mean by a 'drift'?

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What is the main difference between the Ho-Lee and the Vasicek model?

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According to Ito's Lemma, what are the three components of the drift term in an asset?

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What problem do both Vasicek and Ho-Lee models share?

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What two components do we include in a Continous Time Stochastic Pro- cess?

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You put money into the stock market because you expect to make a profit (although you might loose money). Does your capital follow a Martingale?

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