48 records from EconBiz based on author Name

1. School ties and evaluation outcomes : evidence from the Korean Basketball League

Choi, Hoon; Kim, Seik;
2024
Type: Aufsatz in Zeitschrift; Article in journal;
Availability: Link Link

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2. Impacts of cybersecurity on hospital efficiency and financial performance

Lee, C. Christopher; Choi, Jeong Hoon; Lee, Jung Young; Fortsch, Sima;
2025
Type: Aufsatz in Zeitschrift; Article in journal;
Availability: Link

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3. Inventory and financial performance in the pharmaceutical industry : what transpired over the last two decades?

Choi, Jeong Hoon; Choi, Sangdo; Suresh, Nallan C.;
2025
Type: Aufsatz in Zeitschrift; Article in journal;
Availability: Link Link

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4. Standard errors for panel data models with unknown clusters

Bai, Jushan; Choi, Sung Hoon; Liao, Yuan;
2024
Type: Aufsatz in Zeitschrift; Article in journal;
Availability: Link

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5. Large Volatility Matrix Analysis Using Global and National Factor Models

abstract

Several large volatility matrix inference procedures have been developed, based on the latent factor model. They often assumed that there are a few of common factors, which can account for volatility dynamics. However, several studies have demonstrated the presence of local factors. In particular, when analyzing the global stock market, we often observe that nation-specific factors explain their own country's volatility dynamics. To account for this, we propose the Double Principal Orthogonal complEment Thresholding (Double-POET) method, based on multi-level factor models, and also establish its asymptotic properties. Furthermore, we demonstrate the drawback of using the regular principal orthogonal component thresholding (POET) when the local factor structure exists. We also describe the blessing of dimensionality using Double-POET for local covariance matrix estimation. Finally, we investigate the performance of the Double-POET estimator in an out-of-sample portfolio allocation study using international stocks from 20 financial markets

Choi, Sung Hoon; Kim, Donggyu;
2022
Availability: Link Link

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6. Inventory and financial performance in the pharmaceutical industry : what transpired over the last two decades?

Choi, Jeong Hoon; Choi, Sangdo; Suresh, Nallan C.;
2024
Type: Aufsatz in Zeitschrift; Article in journal;
Availability: Link Link

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7. Feasible weighted projected principal component analysis for semi-parametric factor models

Choi, Sung Hoon;
2023
Type: Aufsatz in Zeitschrift; Article in journal;
Availability: Link

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8. Large volatility matrix analysis using global and national factor models

Choi, Sung Hoon; Kim, Donggyu;
2023
Type: Aufsatz in Zeitschrift; Article in journal;
Availability: Link
Citations: 2 (based on OpenCitations) Cited By

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9. The union wage premium in a segmented labor market : new evidence from Korea

Choi, Hoon; Ramos, Raúl;
2023
Type: Aufsatz in Zeitschrift; Article in journal;
Availability: Link Link
Citations: 2 (based on OpenCitations) Cited By

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10. Competition can help predict sales

Fortsch, Sima M.; Choi, Jeong Hoon; Khapalova, Elena A.;
2022
Type: Aufsatz in Zeitschrift; Article in journal;
Availability: Link Link
Citations: 1 (based on OpenCitations) Cited By

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