A Hausman test for the presence of market microstructure noise in high frequency data
高频数据中市场微观结构噪声的Hausman检验AI 解读 ↓
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AI 根据所提供的论文材料归类:摘要明确检验高频金融数据的微观结构噪声,并服务于波动率估计,直接支持高频计量与波动率分类。
高频数据中市场微观结构噪声的Hausman检验AI 解读 ↓
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We develop tests that help assess whether a high frequency data sample can be treated as reasonably free of market microstructure noise at a given sampling frequency for the purpose of implementing high frequency volatility and other estimators. The tests are based on the Hausman principle of comparing two estimators, one that is efficient but not robust to the deviation being tested, and one that is robust but not as efficient. We investigate the asymptotic properties of the test statistic in a general nonparametric setting, and compare it with several alternatives that are also developed in the paper. Empirically, we find that improvements in stock market liquidity over the past decade have increased the frequency at which simple, uncorrected, volatility estimators can be safely employed.