Visualisation of financial time series by linear principal component   analysis and nonlinear principal component analysis
  In this dissertation, the main goal is visualisation of financial time series. We expect that visualisation of financial time series will be a useful auxiliary for technical analysis. Firstly, we review the technical analysis methods and test our trading rules, which are built by the essential concepts of technical analysis. Next, we compare the quality of linear principal component analysis and nonlinear principal component analysis in financial market visualisation. We compare different methods of data preprocessing for visualisation purposes. Using visualisation, we demonstrate the difference between normal and crisis time period. Thus, the visualisation of financial market can be a tool to support technical analysis. 
Hao-Che Chen
q-fin.MF