Asymmetric Correlation Quantization Hashing for Cross-modal Retrieval

This paper examines the symmetry of correlation of sovereign bond yield dynamics between eight Eurozone countries (Austria, Belgium, France, Germany, Ireland, Italy, Portugal, and Spain) in the period from January 3, 2000 to August 31, 2011. Asymmetry of correlation is investigated pair-wise by applying the test of Yongmiao Hong, Jun Tu, and Guofu Zhou (2007). Whereas the test of Hong, Tu, and Zhou (2007) is static, the present paper provides also a dynamic version of the test and identifies time periods when the correlation of Eurozone sovereign bond yield dynamics became asymmetric. We identified seven pairs of sovereign bond markets for which the null hypothesis of symmetry in correlation of sovereign bond yield dynamics can be rejected. Calculating rolling-window exceedance correlation, we found that the time-varying upper- (i.e. for positive yield changes) and lower-tail correlations (i.e. for negative yield changes) for pair-wise observed sovereign bond markets normally follow each other closely, yet during some time periods (for most pair-wise observed countries, these periods are around the September 11 attack on the New York City WTC and around the start of the Greek debt crisis) the difference in correlation does increase. The results show that the upper- and lower-tail correlation was symmetric before the Eurozone debt crisis for most of the pair-wise observed sovereign bond markets but has become much less symmetric since then.

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Regime Switching, Asymmetric Correlation and International Portfolio Choices

SSRN Electronic Journal ◽

10.2139/ssrn.1566889 ◽

2010 ◽

Author(s):

Fathi Abid ◽

Slah Bahloul

Keyword(s):

Regime Switching ◽

Portfolio Choices ◽

International Portfolio ◽

Asymmetric Correlation

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ENDOGENOUS CROSS CORRELATIONS

Macroeconomic Dynamics ◽

10.1017/s1365100507060270 ◽

2007 ◽

Vol 11 (S1) ◽

pp. 124-153 ◽

Cited By ~ 2

Author(s):

STEPHEN E. SATCHELL ◽

STEFFI J.-H. YANG

Keyword(s):

Financial Regulation ◽

Equity Markets ◽

Portfolio Diversification ◽

Current View ◽

Investment Behavior ◽

Portfolio Risk ◽

Herd Effect ◽

Cross Correlations ◽

Asymmetric Correlation ◽

The Relationship

This paper studies the relationship between rational herding and cross correlations in security returns. It demonstrates analytically and numerically that herding, as a temporary, fragile convergence of investment behavior, can endogenously induce asset dependency. Furthermore, there exists a self-reinforcing process, in which market extreme events amplify the herd effect, which further exacerbates asset dependency. Considering the Taiwan and U.K. equity markets, we find that the simulated markets in the presence of herding have results closer to the real patterns of asset dependency than a static model with isolated, noninteracting individuals. Our findings cast doubts on the current view that transparent financial regulation is always desirable. Moreover, this paper finds statistical evidence of asymmetric correlation patterns in both the top 50 stocks in the U.K. and Taiwan equity markets. This suggests that portfolio diversification as a means of managing portfolio risk is unlikely to be effective in periods of extreme losses in these markets.

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HUBUNGAN ANTARA KESIAPAN BELAJAR DENGAN KOMPETENSI INTI PENGETAHUAN BAHASA INDONESIA PADA SISWA KELAS V SD GUGUS LETKOL WISNU DENPASAR UTARA TAHUN PELAJARAN 2017/2018

Indonesian Journal Of Educational Research and Review ◽

10.23887/ijerr.v1i2.14713 ◽

2018 ◽

Vol 1 (2) ◽

Author(s):

Ni Putu Trisna Hendrayani

Keyword(s):

Core Competence ◽

Hypothesis Test ◽

Sampling Technique ◽

Significance Level ◽

The Core ◽

Ex Post ◽

Language Knowledge ◽

The Core Competence ◽

Asymmetric Correlation ◽

Academic Year

This study was intended to determine the relationship between the readiness of learning with the core competence of Indonesian language knowledge of the V grade students of SD Gugus Letkol Wisnu North Denpasar in Academic Year 2017/2018. The type of this research was ex post facto research with asymmetric correlation. The population of this study was all students of V grade students which located at SD Gugus Letkol Wisnu North Denpasar in Academic Year 2017/2018 which has population of 340 students. The determination of the sample used proportional random sampling technique with 5% error rate and obtained many samples from the population were 172 students. The data which obtained through the results of the questionnaires about the readiness of learning and the core competence of Indonesian language knowledge were obtained from recording documents value of the end semester of the core competence of Indonesian language knowledge of the V grade students of SD Gugus Letkol Wisnu North Denpasar in semester 1. As the test was a normality test data distribution. After all the prerequisite tests were fulfilled, statistical analysis used in this research was hypothesis test which used product moment correlation analysis. Based on the results of the analysis, then rxy count = 0.818. At the significance level of 5% with n = 172, then obtained rxy table = 0,148.It could be stated that rxy count = 0,818> rxy table = 0,148, hence it can be interpreted that H0 which reads there was no significant correlation between the readiness of learning with core competence of Indonesian language knowledge of the V grade students of SD Gugus Letkol Wisnu North Denpasar rejected this mean Ha accepted. Therefore, it can be concluded that there was a significant relationship between the readiness of learning with the core competence of Indonesian language knowledge of the V grade students of SD Gugus Letkol Wisnu North Denpasar in Academic Year 2017/2018, with a positive correlation direction, it means the higher the readiness of learning so that the higher the core competence of Indonesian language knowledge.

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