integer-valued time series;
conditional Poisson;
zero-inflated INGARCH;
D O I:
10.5351/KJAS.2015.28.3.583
中图分类号:
O21 [概率论与数理统计];
C8 [统计学];
学科分类号:
020208 ;
070103 ;
0714 ;
摘要:
Zero-inflation has recently attracted much attention in integer-valued time series. This article deals with conditional variance (volatility) modeling for the zero-inflated count time series. We incorporate zero-inflation property into integer-valued GARCH (INGARCH) via conditional Poisson and negative binomial marginals. The Cholera frequency time series is analyzed as a data application. Estimation is carried out using EM-algorithm as suggested by Zhu (2012).
机构:
Kyoto Univ Hosp, Dept Psychiat, Kyoto, JapanSeinan Gakuin Univ, Fac Econ, Fukuoka, Japan
Tajika, Aran
Hasegawa, Akio
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机构:
Adv Telecommun Res Inst Int, Kyoto, JapanSeinan Gakuin Univ, Fac Econ, Fukuoka, Japan
Hasegawa, Akio
Kawanishi, Nao
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机构:
Sonas Inc, Tokyo, JapanSeinan Gakuin Univ, Fac Econ, Fukuoka, Japan
Kawanishi, Nao
Fujita, Hirokazu
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机构:
Kochi Univ, Kochi Med Sch, Ctr Promote Creat Med Educ, Kochi, JapanSeinan Gakuin Univ, Fac Econ, Fukuoka, Japan
Fujita, Hirokazu
Tsujino, Naohisa
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机构:
Toho Univ, Sch Med, Dept Neuropsychiat, Tokyo, Japan
Saiseikai Yokohama Shi Tobu Hosp, Dept Psychiat, Yokohama, Kanagawa, JapanSeinan Gakuin Univ, Fac Econ, Fukuoka, Japan
Tsujino, Naohisa
Jinnin, Ran
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机构:
Hiroshima Univ, Grad Sch Biomed & Hlth Sci, Dept Psychiat & Neurosci, Hiroshima, JapanSeinan Gakuin Univ, Fac Econ, Fukuoka, Japan
Jinnin, Ran
Uchida, Megumi
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机构:
Nagoya City Univ, Grad Sch Med Sci, Dept Psychiat & Cognit Behav Med, Nagoya, Aichi, JapanSeinan Gakuin Univ, Fac Econ, Fukuoka, Japan
Uchida, Megumi
Okamoto, Yasumasa
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机构:
Hiroshima Univ, Grad Sch Biomed & Hlth Sci, Dept Psychiat & Neurosci, Hiroshima, JapanSeinan Gakuin Univ, Fac Econ, Fukuoka, Japan
Okamoto, Yasumasa
Akechi, Tatsuo
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机构:
Nagoya City Univ, Grad Sch Med Sci, Dept Psychiat & Cognit Behav Med, Nagoya, Aichi, JapanSeinan Gakuin Univ, Fac Econ, Fukuoka, Japan
Akechi, Tatsuo
Furukawa, Toshi A.
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机构:
Kyoto Univ, Grad Sch Med, Sch Publ Hlth, Dept Hlth Promot & Human Behav, Kyoto, JapanSeinan Gakuin Univ, Fac Econ, Fukuoka, Japan