Sökning: "kernel density estimation"
Visar resultat 11 - 15 av 16 avhandlingar innehållade orden kernel density estimation.
11. Analytics-driven approaches supporting asset management of sanitary sewer networks
Sammanfattning : Sewer blockages can cause overflows and flooding, with consequences such as damage to property and environmental pollution, risks to public health and economic loss. Despite the causes being understood, blockages in sewer networks may occur unpredictably. LÄS MER
12. Four contributions to statistical inference in econometrics
Sammanfattning : This thesis, which consists of four chapters, focuses on three topics: discriminating between stationary and nonstationary time series, testing the constancy of the error covariance matrix of a vector model, and estimating density functions over bounded domains using kernel techniques. In Chapter 1, “Testing the unit root hypothesis against the logistic smooth transition autoregressive model”, and Chapter 2, “A nonlinear alternative to the unit root hypothesis”, the joint hypothesis of unit root and linearity allows one to distinguish between random walk processes, with or without drift, and stationary nonlinear processes of the smooth transition autoregressive type. LÄS MER
13. On inference in partially observed Markov models using sequential Monte Carlo methods
Sammanfattning : This thesis concerns estimation in partially observed continuous and discrete time Markov models and focus on both inference about the conditional distribution of the unobserved process as well as parameter inference for the dynamics of the unobserved process. Paper A concerns calibration of advanced stock price models, in particular the Bates and NIG-CIR models, using options data observed through bid-ask spreads. LÄS MER
14. Classification and Localization of Vehicle Occupants Using 3D Range Images
Sammanfattning : This thesis deals with the problem of classifying automotive vehicle occupants and estimating their position. This information is critical in designing future smart airbag systems providing maximum protection for passengers. LÄS MER
15. Low and Medium Level Vision Using Channel Representations
Sammanfattning : This thesis introduces and explores a new type of representation for low and medium level vision operations called channel representation. The channel representation is a more general way to represent information than e.g. as numerical values, since it allows incorporation of uncertainty, and simultaneous representation of several hypotheses. LÄS MER
