The specimen calculation outcome indicates that transaction data waveform of time domain assume fractal scale invariant property, which fractal dimensionality can reflect complexity and irregularity.

• 样本计算和统计结果表明；证券交易数据的时域波形信号具有分形标度不变性；分形维数能够反映交易数据的时域波形信号的复杂性和不规则性.