Showing 1 - 10 of 68
In this paper, we analyse Pakistan’s political risks and events that have affected the country’s stock markets since 1947. We collected data in the form of questionnaires from historians, economists, politicians, government officials, bankers and stock market analysts in Pakistan and make...
Persistent link: https://www.econbiz.de/10009463269
We present a novel method, called the transform likelihood ratio (TLR) method, for estimation of rare event probabilities with heavy-tailed distributions. Via a simple transformation ( change of variables) technique the TLR method reduces the original rare event probability estimation with heavy...
Persistent link: https://www.econbiz.de/10009448798
clustering models based on Gaussian mixture models (GMMs) which are fitted with the use of the recently developed variational ….e., the temporal usage behaviour, and developing clustering algorithms suitable for high dimensional data based on the use of …
Persistent link: https://www.econbiz.de/10009438102
Due to the change in attitudes and lifestyles, people expect to find new partners and friends via various ways now-a-days. Online dating networks create a network for people to meet each other and allow making contact with different objectives of developing a personal, romantic or sexual...
Persistent link: https://www.econbiz.de/10009438155
small number of replications per variable, and HDLLSS data refer to HDLSS data observed over time. Clustering technique …, mass spectrometry data, pattern recognition. Most current clustering algorithms for HDLSS and HDLLSS data are adaptations … addition, available algorithms often exhibit poor clustering accuracy and stability for non-normal data. Simulations show that …
Persistent link: https://www.econbiz.de/10009464047
This study proposes one plausible procedure to address two methodological issues,which are common in micro- and macro- econometric analyses, for the full realization ofresearch potential brought by recently available high dimensional data. To address the issue ofhow to infer the causal structure...
Persistent link: https://www.econbiz.de/10009465107
, data mining method clustering was undertaken to identify the customersegments. Two different clustering methods were tested …
Persistent link: https://www.econbiz.de/10009467253
model (GPPM) in which the partition process is predictor-dependent. The GPPM generalizes DP clustering to relax the …
Persistent link: https://www.econbiz.de/10009475421
Ranked preference data arise when a set of judges rank, in order of their preference, a set of objects. Such data arise in preferential voting systems and market research surveys. Covariate data associated with the judges are also often recorded. Such covariate data should be used in conjunction...
Persistent link: https://www.econbiz.de/10009475695
dissertation, we propose a robust clustering method based on the EM algorithm applied to a modified multivariate normal density …
Persistent link: https://www.econbiz.de/10009477900