Browsing by Subject "Probabilities ; Stochastic processes"
Now showing items 1-7 of 7
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Classification of local stellar populations: the improved MEMPHIS algorithm - Part II
(2009-07)
Research report
Open AccessDiscontinuities of the local velocity distribution which are associated with stellar populations are studied from the improved statistical method MEMPHIS (Maximum Entropy of the Mixture Probability from HIerarchical ... -
Disc and halo kinematic populations from HIPPARCOS and Geneva-Copenhagen surveys of the solar neighbourhood
(2010-02)
Article
Open AccessDiscontinuities in the local velocity distribution associated with stellar populations are studied using the Maximum Entropy of the Mixture Probability from HIerarchical Segregation (MEMPHIS) improved statistical method, ... -
Large and small-scale structures of the local Galactic disc: a maximum entropy approach to the stellar velocity distribution
(2010-02)
Article
Open AccessAn analytical model based on the maximum entropy approach is proposed to describe the eventual asymmetries of the velocity distribution, which are collected through its sample moments. If an extended set of moments is ... -
Partition entropy and chi-squared error: the improved MEMPHIS algorithm - Part I
(2009-07)
Research report
Open AccessThe entropy of the population partition is studied as a function of the sampling parameter, so that within a particular interval of its graph, the plateau region, it is possible to get a stable estimation of the mixture ... -
Small-scale structure of the disc velocity distribution. A maximum entropy statistical approach - Part II
(2009-12)
Research report
Open AccessAmong metallicity, colour, and other star properties, the eccentricity of the star’s orbit behaves as a very good sampling parameter to find a more detailed structure for the disc velocity distribution, allowing distinctions ... -
Structure of the velocity distribution of the Galactic disc: a maximum entropy statistical approach - Part I
(2009-09)
Research report
Open AccessThe maximum entropy approach is proposed to describe the local structures of the veloc- ity distribution, which are collected through its sample moments. The method is used with several samples from the HIPPARCOS and ... -
Study and Implementation of some Quantitative Trading Models
(Universitat Politècnica de Catalunya, 2011-06)
Master thesis
Open AccessQuantitative or algorithmic trading is the automatization of investments decisions obeying a xed or dynamic sets of rules to determine trading orders. It has increasingly made its way up to 70% of the trading volume of ...
