New Spatial Filtering Methods¶
To fill the research gaps and demonstrate that the proposed LS framework could facilitate the development of new methods, 5 new spatial filtering methods are designed by integrating the strategies.
New TRCA-related methods¶
ms-eTRCA-R-2:
Only include the projection matrix in \(\mathbf{P}_\mathbf{E}\) (NOT \(\mathbf{P}_\mathbf{K}\));
\(\mathbf{L}_\mathbf{E}\), \(\mathbf{L}_\mathbf{K}\) and \(\mathbf{Z}\) are designed following the TDCA;
The utilization strategies of spatial filters follow the eTRCA (Combine spatial filters of multiple stimuli).
ms-eTRCA-R-1:
Include the projection matrix in both \(\mathbf{P}_\mathbf{E}\) and \(\mathbf{P}_\mathbf{K}\);
\(\mathbf{L}_\mathbf{E}\), \(\mathbf{L}_\mathbf{K}\) and \(\mathbf{Z}\) are designed following the TDCA;
The utilization strategies of spatial filters follow the eTRCA (Combine spatial filters of multiple stimuli).
New MsetCCA-related methods¶
ms-MsetCCA-2:
Combine multi-stimulus data in \(\mathbf{Z}\) of the MsetCCA;
Only include the projection matrix in \(\mathbf{P}_\mathbf{E}\) (NOT \(\mathbf{P}_\mathbf{K}\));
\(\mathbf{L}_\mathbf{E}\), \(\mathbf{L}_\mathbf{K}\) and \(\mathbf{Z}\) are designed following the TDCA;
The utilization strategies of spatial filters follow the ms-eTRCA (Combine spatial filters of multiple trials of multiple stimuli).
ms-MsetCCA-1:
Combine multi-stimulus data in \(\mathbf{Z}\) of the MsetCCA;
Include the projection matrix in both \(\mathbf{P}_\mathbf{E}\) and \(\mathbf{P}_\mathbf{K}\);
\(\mathbf{L}_\mathbf{E}\), \(\mathbf{L}_\mathbf{K}\) and \(\mathbf{Z}\) are designed following the TDCA;
The utilization strategies of spatial filters follow the ms-eTRCA (Combine spatial filters of multiple trials of multiple stimuli).
ms-MsetCCA-3:
Combine multi-stimulus data in \(\mathbf{Z}\) of the MsetCCA;
Include the projection matrix in both \(\mathbf{P}_\mathbf{E}\) and \(\mathbf{P}_\mathbf{K}\);
\(\mathbf{L}_\mathbf{E}\), \(\mathbf{L}_\mathbf{K}\), mathbf{P}_mathbf{E}, \(\mathbf{P}_\mathbf{K}\) and \(\mathbf{Z}\) are designed following the TDCA;
The utilization strategies of spatial filters follow the ms-eTRCA (Combine spatial filters of multiple trials of multiple stimuli).
Performance evaluation of new TRCA- and MsetCCA-related methods¶
Compare TRCA-related methods in Benchmark Dataset:
Compare MsetCCA-related methods in Benchmark Dataset:
Compare multi-stimulus methods in Benchmark Dataset: