risk-free asset
The need of AI Risk Managers in organizations: AI is not a risk-free asset
There are several risks involved in dealing with Artificial Intelligence (AI). In the globalized world, however, such methodology choices can eventually snowball into much greater economic risks. Let me make a case for an AI Risk Manager in organizations, preferably sitting in the Risk Management Department (RMD) if not compliance. The series of recent AI mishaps have further ignited the debate. A person from Michigan sued the Detroit police after being falsely arrested and falsely identified as a shoplifting suspect by the department's facial recognition software.
Portfolio Optimization for Cointelated Pairs: SDEs vs. Machine Learning
Mahdavi-Damghani, Babak, Mustafayeva, Konul, Roberts, Stephen, Buescu, Cristin
Abstract-- We investigate the problem of dynamic portfolio optimization in continuous-time, finite-horizon setting for a portfolio of two stocks and one risk-free asset. The stocks follow the Cointelation model recently introduced [7]. The proposed optimization methods are twofold. In what we call an Stochastic Differential Equation approach, we compute the optimal weights using mean-variance criterion and power utility maximization. We show that dynamically switching between these two optimal strategies by introducing a triggering function can further improve the portfolio returns. We contrast this with the machine learning clustering methodology inspired by the band-wise Gaussian mixture model [9]. The first benefit of the machine learning over the Stochastic Differential Equation approach is that we were able to achieve the same results though a simpler channel. The second advantage is a flexibility to regime change.