Приказано за аутора "Valjarević, Dragana"

Приказ резултата 1-11 од 11

    • Causality between stopped filtrations and some applications 

      Valjarević, Dragana; Petrović, Ljiljana (2021-11-21)
      In this paper we consider the concept of statistical causality in continuous time between filtrations associated with stopping times, which is based on Granger’s definition of causality. Especially, we consider a ...

    • GIS analysis of land cover changes on the territory of the Prokuplje municipality 

      Valjarević, Aleksandar; Živković, Dragica; Valjarević, Dragana; Stevanović, Vladica; Golijanin, Jelena (Hindawi, 2014-01-03)
      The monitoring of the territory of Prokuplje Municipality was done based on 1 : 25,000 topographic maps in three different time periods (1969, 1974, and 1984) and land cover map in 2012. Analogous topographic maps done in ...

    • A GIS-based method for analysis of a better utilization of thermal-mineral springs in the municipality of Kursumlija (Serbia) 

      Valjarević, Aleksandar; Srećković-Batoćanin, Danica; Valjarević, Dragana; Matović, Vesna (Elsevier, 2018-09-02)
      There are about 240 geothermal occurrences with 60 commercial spas included in, which are spread throughout the territory of Serbia. The majority of springs and other surface manifestations are located along the south-eastern ...

    • An Improved Modification of Accelerated Double Direction and Double Step-Size Optimization Schemes 

      Petrović, Milena J.; Valjarević, Dragana; Ilić, Dejan; Valjarević, Aleksandar; Mladenović, Julija (MDPI, 2022-01-13)
      We propose an improved variant of the accelerated gradient optimization models for solving unconstrained minimization problems. Merging the positive features of either double direction, as well as double step size accelerated ...

    • A note on hybridization process applied on transformed double step size model 

      Petrović, Milena; Rakočević, Vladimir; Valjarević, Dragana; Ilić, Dejan (Springer, 2019-12-03)
      We introduce a hybrid gradient model for solving unconstrained optimization problems based on one specific accelerated gradient iteration. Having applied a three term hybridization relation on transformed accelerated double ...

    • Statistical causality and extremal measures 

      Petrović, Ljiljana; Valjarević, Dragana (2018-10-21)
      In this paper we consider the concept of statistical causality in continuous time between ows of information, represented by ltra- tions. Then we relate the given concept of causality to the equivalent change of measure ...

    • Statistical causality and local uniqueness for solutions of the martingale problem 

      Petrović, Ljiljana; Valjarević, Dragana (2018-06-15)
      In this paper we consider the concept of statistical causality between filtrations associated with stopping times, which is based on Granger’s definition of causality. Especially, we consider a generalization of a causality ...

    • Statistical causality and measurable separability of σ-algebras 

      Valjarević, Dragana; Merkle, Ana (Science direct, 2021-07-21)
      In this paper we consider a concept of statistical causality, based on Granger’s definition of causality and analyze the relationships between given causality and the concept of measurable separability of σ-algebras. The ...

    • Statistical causality and purely discontinuous local martingales 

      Valjarević, Dragana; Petrović, Ljiljana (Taylor and Francis, 2021-07-21)
      The statistical concept of causality in continuous time between filtered probability spaces considered in this paper is based on Granger’s definition of causality. The given concept of causality can be connected to the ...

    • Statistical causality and separable processes 

      Valjarević, Dragana; Petrović, Ljiljana (Science Direct, 2020-11-21)
      In this paper we consider the statistical concept for continuous-time stochastic processes, which is based on Granger’s definition of causality. We, also, show that separability is directly related to causality concepts. ...

    • Statistical causality, martingale problems and local uniqueness 

      Petrović, Ljiljana; Valjarević, Dragana (Taylor and Francis, 2018-07-21)
      The paper considers a statistical concept of causality in continuous time in the filtered probability spaces which is based on the Granger’s definition of causality. The given causality concept is then applied to the ...