Essays about: "Multivariate statistics"

Showing result 6 - 10 of 57 essays containing the words Multivariate statistics.

  1. 6. Describing Finite Codimensional Polynomial Subalgebras Using Partial Derivatives

    University essay from Lunds universitet/Matematik LTH

    Author : Erik Leffler; [2022]
    Keywords : Algebra Polynomial Derivations alpha-Derivations SAGBI Basis; Mathematics and Statistics;

    Abstract : In this text we continue the work of describing subalgebras of K[x] of finite codimension that was started in Describing subalgebras of K[x] using derivatives. In the referenced paper, the authors present how univariate subalgebras can be described by conditions based on evaluations in certain scalars, and proceed to develop a large theoretical framework to understand the nature of such conditions. READ MORE

  3. 7. Estimation of severe crash frequency using two surrogates

    University essay from Lunds universitet/Matematisk statistik

    Author : Zhankun Chen; [2022]
    Keywords : Multivariate Extreme Value distributions; Copula; Extreme Value Theory; Crash frequency; Surrogate Meausre of Safety; Road safety; Mathematics and Statistics;

    Abstract : This thesis is concerned with the estimation of crash frequency based on the bivariate modeling of surrogate measures of safety (SMoS), which serve as indicators for traffic risk. Using the SMoS, any traffic conflict between two road users can be described by their proximity together with their hypothetical consequence. READ MORE

  4. 8. How is Polly? Revisiting the Differential Attack on Polly Cracker after 20 years

    University essay from Lunds universitet/Matematikcentrum

    Author : Christoph Strobl; [2022]
    Keywords : Gröbner Bases; polly cracker; differential attack; asymmetric cryptography; multivariate cryptography; public-key cryptography; Mathematics and Statistics; Technology and Engineering;

    Abstract : För att skapa nya krypteringsalgoritmer är man alltid på jakt efter svårlösta matematiska problem. Men är alla problem lämpliga? Uppsatsen behandlar Gröbnerbaser över ändliga kroppar och visar att de är inte lämpliga för att bygga säkra krypteringsalgoritmer. READ MORE

  5. 9. Where are we heading?

    University essay from Lunds universitet/Nationalekonomiska institutionen

    Author : Clara Ramm-Ericson; Ingrid Gunnarsson; [2022]
    Keywords : graduate migration; urbanity; municipalities; regression analysis; Business and Economics;

    Abstract : The migration patterns of newly graduated students have implications for regional development, as the attraction and retention of high-educated individuals is important for the innovation and productivity of the regional labor market. Moreover, imbalances in the migration flows may create or amplify regional discrepancies. READ MORE

  6. 10. Multivariate Data Analysis on (Ti,Al)N Arc-PVD coating process : MVDA of the growth parameters thickness, stress,composition, and cutting performance

    University essay from Uppsala universitet/Oorganisk kemi

    Author : Per-Olof Öqvist; [2021]
    Keywords : chemistry; material; coating; statistics; PLS; PCA; kemi; material; beläggning; statistik; PLS; PCA;

    Abstract : This diploma work was done at Seco Tools AB (SECO) in Fagersta and aimed to evaluate the possibility to model the relationship between deposition data, deposition properties and, cutting performance of a (Ti,Al)N coating on cutting inserts by applying the Multivariate Data Analysis (MVDA) modeling technique Partial Least Squares Projection to Latent Structures Modeling (PLS). Cathodic Arc Deposition (Arc-PVD) was the PVD technique focused on this study. READ MORE