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- W2903876399 abstract "In finance, durations between successive transactions are usually modeled by the autoregressive conditional duration model based on a continuous distribution omitting zero values. Zero or close-to-zero durations can be caused by either split transactions or independent transactions. We propose a discrete model allowing for excessive zero values based on the zero-inflated negative binomial distribution with score dynamics. This model allows to distinguish between the processes generating split and standard transactions. We use the existing theory on score models to establish the invertibility of the score filter and verify that sufficient conditions hold for the consistency and asymptotic normality of the maximum likelihood of the model parameters. In an empirical study of DJIA stocks, we find that split transactions cause on average 63% of close-to-zero values. Furthermore, the loss of decimal places in the proposed approach is less severe than incorrect treatment of close-to-zero values in continuous models." @default.
- W2903876399 created "2018-12-22" @default.
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- W2903876399 date "2019-01-01" @default.
- W2903876399 modified "2023-09-27" @default.
- W2903876399 title "Zero-Inflated Autoregressive Conditional Duration Model for Discrete Trade Durations with Excessive Zeros" @default.
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