Showing 1 - 10 of 5,743
We implement a master-slave parallel genetic algorithm (PGA) with a bespoke log-likelihood fitness function to identify emergent clusters within price evolutions. We use graphics processing units (GPUs) to implement a PGA and visualise the results using disjoint minimal spanning trees (MSTs). We...
Persistent link: https://www.econbiz.de/10010934490
Hierarchical analysis is considered and a multilevel model is presented in order to explore causality, chance and complexity in financial economics. A coupled system of models is used to describe multilevel interactions, consistent with market data: the lowest level is occupied by agents...
Persistent link: https://www.econbiz.de/10010931995
A technique from stochastic portfolio theory [Fernholz, 1998] is applied to analyse equity returns of Small, Mid and Large cap portfolios in an emerging market through periods of growth and regional crises, up to the onset of the global financial crisis. In particular, we factorize portfolios in...
Persistent link: https://www.econbiz.de/10010672373
We investigate serial correlation, periodic, aperiodic and scaling behaviour of eigenmodes, i.e. daily price fluctuation time-series derived from eigenvectors, of correlation matrices of shares listed on the Johannesburg Stock Exchange (JSE) from January 1993 to December 2002. Periodic, or...
Persistent link: https://www.econbiz.de/10005099429
We apply random matrix theory to compare correlation matrix estimators C obtained from emerging market data. The correlation matrices are constructed from 10 years of daily data for stocks listed on the Johannesburg Stock Exchange (JSE) from January 1993 to December 2002. We test the spectral...
Persistent link: https://www.econbiz.de/10005099441
Persistent link: https://www.econbiz.de/10010440154
Persistent link: https://www.econbiz.de/10003791854
We discuss the finding that cross-sectional characteristic based models have yielded portfolios with higher excess monthly returns but lower risk than their arbitrage pricing theory counterparts in an analysis of equity returns of stocks listed on the JSE. Under the assumption of general...
Persistent link: https://www.econbiz.de/10013034895
A technique from stochastic portfolio theory [Fernholz, 1998] is applied to analyse equity returns of Small, Mid and Large cap portfolios in an emerging market through periods of growth and regional crises, up to the onset of the global financial crisis. In particular, we factorize portfolios in...
Persistent link: https://www.econbiz.de/10013080161
1. Games and simulations in training : factors to consider when designing for adult learners / Courtney Uram, Diane Wilcox, Jane Thall -- 2. Explaining the educational power of games / Timo Lainema, Eeli Saarinen -- 3. Educational simulations : learning from the past and ensuring success in the...
Persistent link: https://www.econbiz.de/10011726799