Exploiting the Black-Litterman framework through error-correction neural networks.

• Study of the CTBLPO problem through Error-Correction Neural Networks. • Investor's views are regarded as a forecasting problem. • Proposal of a feed-forward MAWTSNN model for time-series forecasting problems. • Four other high-performing NN models are compared to the MAWTSNN model. • The use of TVQP NN solvers, i.e. ZNN and LVI-PDNN, to finance. • Experiments in three distinct portfolio configurations using real-world datasets. The Black-Litterman (BL) model is a particularly essential analytical tool for effective portfolio management in financial services sector since it enables investment analysts to integrate investor views into market equilibrium returns. In this research, we define and study the continuous-time BL portfolio optimization (CTBLPO) problem as a time-varying quadratic programming (TVQP) problem. The investor's views in the CTBLPO problem are regarded as a forecasting problem, and they are generated by a novel neural network (NN) model. More precisely, employing a novel multi-function activated by a weights-and-structure-determination for time-series (MAWTS) algorithm, a 3-layer feed-forward NN model, called MAWTSNN, is proposed for handling time-series modeling and forecasting problems. Then, using real-world datasets, the CTBLPO problem is approached by two different TVQP NN solvers. These solvers are the zeroing NN (ZNN) and the linear-variational-inequality primal–dual NN (LVI-PDNN). The experiment findings illustrate and compare the performances of the ZNN and LVI-PDNN in three various portfolio configurations, as well as indicating that the MAWTSNN is an excellent alternative to the traditional approaches. To promote and contend the outcomes of this research, we created two MATLAB repositories for the interested user, that are publicly accessible on GitHub. [ABSTRACT FROM AUTHOR]