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Chinese Journal of Management Science ›› 2020, Vol. 28 ›› Issue (7): 45-56.doi: 10.16381/j.cnki.issn1003-207x.2020.07.005

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Specification Test of Volatility Functions in Jump Diffusion Processes using Nearest Neighbor Truncation

CHEN Qiang1,2, GONG Yu-ting3   

  1. 1. School of Economics, Shanghai University of Finance and Economics, Shanghai 200433, China;
    2. Key Laboratory of Mathematical Economics(SUFE), Ministry of Education, Shanghai 200433, China;
    3. SHU-UTS SILC Business School, Shanghai University, Shanghai 201800, China
  • Received:2017-06-27 Revised:2017-11-30 Online:2020-07-20 Published:2020-08-04

Abstract: Since the volatility function testing is sensitive to jumps in high frequency data, based on nearest neighbor truncation approach,new tests for volatility function form of jump diffusion models are constructed by thepartial sum residual processes. The tests approximating asymptotic properties and their bootstrap methods are investigated. The test statistics are asymptotically robust to the drift and jump terms in jump diffusions. Monte Carlo simulations show that the tests are robust to jumps, and have reasonable size and power performances. The proposed tests are applied to the data of Shanghai Interbank Offered Rate (Shibor), it is found that the jump robust tests can distinguish models better than non-robust tests.

Key words: volatility function, jump diffusion processes, specification test, partial sum processes, nearest neighbor truncation

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