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of spatial-temporal data. A simulation study underlines the superior performance of stPCA if compared to the original PCA …
Persistent link: https://www.econbiz.de/10010251651
Persistent link: https://www.econbiz.de/10003754028
We propose a simple cross-sectional technique to extract daily factors from economic news released at different times and frequencies. Our approach can effectively handle the large number of different announcements that are relevant for tracking current economic conditions.We apply the technique...
Persistent link: https://www.econbiz.de/10013064524
We propose a simple cross-sectional technique to extract daily factors from economic news released at different times and frequencies. Our approach can effectively handle the large number of different announcements that are relevant for tracking current economic conditions. We apply the...
Persistent link: https://www.econbiz.de/10013072867
We propose a simple cross-sectional technique to extract daily factors from economic news released at different times and frequencies. Our approach can effectively handle the large number of different announcements that are relevant for tracking current economic conditions. We apply the...
Persistent link: https://www.econbiz.de/10012459013
Analysis (PCA) algorithms. The performance of different treatments is compared in the extensive simulation study under several … typical data generating processes and recommendations are made. An application of PLS and PCA algorithms with non …
Persistent link: https://www.econbiz.de/10010498613
Principal Component Analysis (PCA) is a common procedure for the analysis of financial market data, such as implied … volatility smiles or interest rate curves. Recently, Pelsser and Lord [11] raised the question whether PCA results may not be … with foreign exchange option markets. For this matrix structure, PCA effects which are interpreted as shift, skew and …
Persistent link: https://www.econbiz.de/10011293917
Persistent link: https://www.econbiz.de/10003794832
The Google Insights data are a collection of recorded Internet searches for a huge number of the keywords, which are available since January 2004. These searches represent a kind of revealed perceptions of Internet users, which are a (possibly not entirely representative) sample of the general...
Persistent link: https://www.econbiz.de/10003897268
power when high numbers of variables but only limited observations are available. We apply PCA-DEA for radial efficiency … while maintaining most of the variation in the original data. Our results suggest that the PCA-DEA methodology reduces the … variables without substantially reducing the discriminatory power of the model. -- Efficiency analysis ; DEA ; PCA ; company …
Persistent link: https://www.econbiz.de/10003915871