Essays about: "permutation"

Showing result 11 - 15 of 52 essays containing the word permutation.

  1. 11. Predicting Customer Churn in E-commerce Using Statistical Modeling and Feature Importance Analysis : A Comparison of Random Forest and Logistic Regression Approaches

    University essay from Umeå universitet/Institutionen för matematik och matematisk statistik

    Author : Amanda Rudälv; [2023]
    Keywords : Customer behavior; E-commerce; Churn prediction; Statistical model; Machine learning; Random forest; Logistic regression; Feature importance; Kundbeteende; E-handel; Kundbortfall; Statistisk modell; Maskininlärning; Random forest; Logistisk regression; Variabelsignifikans;

    Abstract : While operating in online markets offers opportunities for expanded assortment and convenience, it also poses challenges such as increased competition and the need to build personal relationships with customers. Customer retention be- comes crucial in maintaining a successful business, emphasizing the importance of understanding customer behavior. READ MORE

  2. 12. EVALUATION OF CLUSTER STABILITY WITH PERMUTATION SUBGROUPS

    University essay from Uppsala universitet/Statistiska institutionen

    Author : Jacob Kasche; [2022]
    Keywords : clustering; stability; group theory;

    Abstract : This paper suggests a new methodology; using permutation subgroups to evaluate the stability of clusters. This could be any subgroup and the clustering solution can come from any clustering technique. Mainly, this paper shows how the proposed methodology can be performed through an example of using the rotational cyclic group. READ MORE

  3. 13. Performance-Aware Code Size Optimization of Generic Functions through Automatic Implementation of Dynamic Dispatch

    University essay from Linköpings universitet/Programvara och system

    Author : Ivar Härnqvist; [2022]
    Keywords : Compiler technology; Programming language design; Performance; Code size optimization; Generic programming; Polymorphism; Dynamic dispatch; Type erasure; Monomorphization; Templates; C ; Kompilatorteknik; Programspråksdesign; Prestanda; Kodstorleksoptimering; Generisk programmering; Polymorfism; Dynamic dispatch; Typradering; Monomorfisering; Templates; C ;

    Abstract : Monomorphization and dynamic dispatch are two common techniques for implementing polymorphism in statically typed programming languages. Function templates in C++ use the former technique to enable algorithms written as generic functions to be efficiently reused with multiple different data types by producing a separate function instantiation for each invocation that uses a unique permutation of argument types. READ MORE

  4. 14. Estimation of dissolved organic carbon from inland waters using remote sensing data and machine learning

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Lasse Harkort; [2022]
    Keywords : dissolved organic carbon; machine learning; remote sensing; inland waters; water quality; open source data; Earth and Environmental Sciences;

    Abstract : This thesis presents the first attempt to estimate Dissolved Organic Carbon (DOC) in inland waters over a large-scale area using satellite data and machine learning (ML) methods. Four ML approaches, namely Random Forest Regression (RFR), Support Vector Regression (SVR), Gaussian Process Regression (GPR), and a Multilayer Backpropagation Neural Network (MBPNN) were tested to retrieve DOC using a filtered version of the recently published open source AquaSat dataset with more than 16 thousand samples across the continental US matched with satellite data from Landsat 5, 7 and 8 missions. READ MORE

  5. 15. Forecasting Efficiency in Cryptocurrency Markets : A machine learning case study

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Erik Persson; [2022]
    Keywords : Cryptocurrencies; Financial time-series; Multi step-ahead forecasting; Machine Learning; Feature selection; Kryptovalutor; Finansiella tidsserier; Flerstegsprognoser; Maskininlärning; variabelselektion;

    Abstract : Financial time-series are not uncommon to research in an academic context. This is possibly not only due to its challenging nature with high levels of noise and non-stationary data, but because of the endless possibilities of features and problem formulations it creates. READ MORE