Sökning: "Tiancheng Ma"

Hittade 2 uppsatser innehållade orden Tiancheng Ma.

  1. 1. Fog detection using an artificial neural network

    Master-uppsats, Lunds universitet/Matematisk statistik

    Författare :Quanwei Li; Tiancheng Ma; [2023]
    Nyckelord :Machine Learning; Deep Learning; Image Analysis; Computer Vision; Mathematics and Statistics;

    Sammanfattning : This project studies a method of image-based fog detection directly from a camera without using the transmissometer. Fog can be detected using transmissometers which could be a very costly approach. This thesis presents an image-based approach for fog detection using Artificial Neural networks. LÄS MER

  3. 2. The Extended Maximum Likelihood Estimation for Monotone Probability Mass Function with Application using Forensic Data

    Kandidat-uppsats, Lunds universitet/Matematisk statistik

    Författare :Tiancheng Ma; [2022]
    Nyckelord :Statistical Inference Statistics Maximum Likelihood Estimation Non-parametric Estimation; Mathematics and Statistics;

    Sammanfattning : This paper presents solutions to the modelling of frequency data of species labels, but the data is incomplete in the sense that some rarely-occurring species labels give zero observed frequency. The data can be modelled by a monotone probability function with parameters to be estimated, and yet, due to the order constraints and the incomplete data, using conventional parameter estimation methods will cause trouble. LÄS MER