subsample

Working on a comparable timescale, SIM should provide positional information for a subsample of faint stars, thereby probing the most tenuous star streams.

在此同时，SIM应能提供黯淡恒星次级样本的位，从而侦测最稀的恒星流。

The results of tests show that the new subsampling method outperforms other subsampling methods in less extrema and convergence performance of the normalized mutual information.

实验明，新抽样方法可以有效地减少局部极值点，提高归一化互信息测度的收敛性能。