同时检验了收益率序列的随机性，检验结果说明沪深股票市场基本达到弱式有效。
We also verified stochastic feature of return time series, from results we see that Chinese stock market is weak form efficient.
分阶段检验上海股市的随机性，从而得出上海股市有效(弱式)的结论。
According to stages, we test the stochasticity of Shanghai Stock Exchang in this paper, then make a conclusion that the market is efficient (weakly).
针对我国天然胶期货市场的实际情况，本文将只进行弱式有效检验。
According to the classic taxonomy of information sets, efficient market is classified as weak-form, semistrong-form and strong-form.
通过GARCH(1, 1)的市场有效性检验，论证了中国期货市场尚未达到弱式有效，市场风险较大。
By the GARCH (1, 1) model, we verifies that the Chinese futures market doesn't reach the stage of weak market efficiency until now, which proves to be of high risk.
检验结果表明，股改前市场是非有效的，股改之后市场达到了弱式有效。
The results show that whereas the A-share markets were inefficient before spilt share reform, they have reached the weak-form efficiency after that.
通过GARCH(1,1)的市场有效性检验，论证了中国期货市场三个阶段均尚未达到弱式有效，市场风险较大。
By the GARCH (1, l) model, we verify that the three stages of the Chinese futures market don't reach the stage of weak market efficiency until now, which proves to be of high risk.
通过GARCH(1,1)的市场有效性检验，论证了中国期货市场三个阶段均尚未达到弱式有效，市场风险较大。
By the GARCH (1, l) model, we verify that the three stages of the Chinese futures market don't reach the stage of weak market efficiency until now, which proves to be of high risk.
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