1) La descarga del recurso depende de la página de origen
2) Para poder descargar el recurso, es necesario ser usuario registrado en Universia


Opción 1: Descargar recurso

Detalles del recurso

Descripción

In this thesis, I explore a novel algorithm to model the joint behavior of multiple correlated signals. Our chosen example is the ECG (Electrocardiogram) and ABP (Arterial Blood Pressure) signals from patients in the ICU (Intensive Care Unit). I then use the generated models to predict blood pressure levels of ICU patients based on their historical ECG and ABP signals. The algorithm used is a variant of a Hidden Markov model. The new extension is termed as the Latent State Space Copula Model. In the novel Latent State Space Copula Modelthe ECG, ABP signals are considered to be correlated and are modeled using a bivariate Gaussian copula with Weibull marginals generated by a hidden state. We assume that there are hidden patient "states" that transition from one hidden state to another driving a joint ECG-ABP behavior. We estimate the parameters of the model using a novel Gibbs sampling approach. Using this model, we generate predictors that are the state probabilities at any given time step and use them to predict a patient's future health condition. The predictions made by the model are binary and detects whether the Mean arterial pressure(MAP) is going to be above or below a certain threshold at a future time step. Towards the end of the thesis I do a comparison between the new Latent State Space Copula Model and a state of the art Classical Discrete HMM. The Latent State Space Copula Model achieves an Area Under the ROC (AUROC) curve of .7917 for 5 states while the Classical Discrete HMM achieves an AUROC of .7609 for 5 states.

Pertenece a

DSpace at MIT  

Autor(es)

Wanigasekara, Prashan - 

Id.: 69521845

Idioma: eng  - 

Versión: 1.0

Estado: Final

Tipo:  98 pages - 

Palabras claveEngineering and Management Program. - 

Tipo de recurso: Thesis  - 

Tipo de Interactividad: Expositivo

Nivel de Interactividad: muy bajo

Audiencia: Estudiante  -  Profesor  -  Autor  - 

Estructura: Atomic

Coste: no

Copyright: sí

: M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission.

Formatos:  98 pages - 

Requerimientos técnicos:  Browser: Any - 

Fecha de contribución: 08-ene-2017

Contacto:

Localización:
* 962186953

Otros recursos que te pueden interesar

  1. Optimizing resource allocation in a portfolio of projects related to technology infusion using heuristic and meta-heuristic methods In today's competitive environment, manufacturing companies are under constant pressure to improve p...
  2. Using object process methodology to develop interfaces and smart electronic procedures for simulated telerobotic operations This thesis addresses two questions: 1) How should an existing space telerobotic simulator be extend...
  3. Using a systems-theoretic approach to analyze cyber attacks on cyber-physical systems With increased Internet connectivity and the advent of the industrial Internet, cyber-physical syste...
  4. Management and governance of external developer platforms - at the example of Akamai, Inc. and Uber Technologies, Inc. How do companies manage and govern external developer platforms? Drawing on platform ecosystem, prod...
  5. Applying tradespace exploration methods for the design of value-robust microgrids Microgrids enhance resilience in power distribution by providing the capability to be islanded from ...

Otros recursos de la mismacolección

  1. Understanding the adoption of additive manufacturing Additive Manufacturing (AM) -commonly known as 3d printing - is experiencing an upward trend as meas...
  2. Optimizing resource allocation in a portfolio of projects related to technology infusion using heuristic and meta-heuristic methods In today's competitive environment, manufacturing companies are under constant pressure to improve p...
  3. Using object process methodology to develop interfaces and smart electronic procedures for simulated telerobotic operations This thesis addresses two questions: 1) How should an existing space telerobotic simulator be extend...
  4. Using a systems-theoretic approach to analyze cyber attacks on cyber-physical systems With increased Internet connectivity and the advent of the industrial Internet, cyber-physical syste...
  5. Management and governance of external developer platforms - at the example of Akamai, Inc. and Uber Technologies, Inc. How do companies manage and govern external developer platforms? Drawing on platform ecosystem, prod...

Aviso de cookies: Usamos cookies propias y de terceros para mejorar nuestros servicios, para análisis estadístico y para mostrarle publicidad. Si continua navegando consideramos que acepta su uso en los términos establecidos en la Política de cookies.