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Logistic regression for a better matching of buyers and suppliers in e-procurement
(Massachusetts Institute of Technology, 2010)
The thesis aims to provide a way to identify better matches between buyers and suppliers who are using an e-procurement platform provided by a US based worldwide online market company. The goal is to enhance the shopping ...
On the Gap-Tooth direct simulation Monte Carlo method
(Massachusetts Institute of Technology, 2012)
This thesis develops and evaluates Gap-tooth DSMC (GT-DSMC), a direct Monte Carlo simulation procedure for dilute gases combined with the Gap-tooth method of Gear, Li, and Kevrekidis. The latter was proposed as a means of ...
Particle filtering with Lagrangian data in a point vortex model
(Massachusetts Institute of Technology, 2012)
Particle filtering is a technique used for state estimation from noisy measurements. In fluid dynamics, a popular problem called Lagrangian data assimilation (LaDA) uses Lagrangian measurements in the form of tracer positions ...
Iterative uncertainty reduction via Monte Carlo simulation : a streamlined life cycle assessment case study
(Massachusetts Institute of Technology, 2013)
Life cycle assessment (LCA) is one methodology for assessing a product's impact on the environment. LCA has grown in popularity recently as consumers and governments request more information concerning the environmental ...
Modeling travel time uncertainty in traffic networks
(Massachusetts Institute of Technology, 2010)
Uncertainty in travel time is one of the key factors that could allow us to understand and manage congestion in transportation networks. Models that incorporate uncertainty in travel time need to specify two mechanisms: ...
An analysis of scientific computing environments : a consumer's view
(Massachusetts Institute of Technology, 2008)
In the last three decades, with rapid advancements in the hardware and software industry, a large number of commercial and free open source languages and software have evolved. Many of these are Very High Level Languages ...
Robust scheduling in forest operations planning
(Massachusetts Institute of Technology, 2008)
Forest operations planning is a complex decision process which considers multiple objectives on the strategic, tactical and operational horizons. Decisions such as where to harvest and in what order over different time ...
Multilevel spectral clustering : graph partitions and image segmentation
(Massachusetts Institute of Technology, 2008)
While the spectral graph partitioning method gives high quality segmentation, segmenting large graphs by the spectral method is computationally expensive. Numerous multilevel graph partitioning algorithms are proposed to ...
Computational tools for enabling longitudinal skin image analysis
(Massachusetts Institute of Technology, 2016)
We present a set of computational tools that enable quantitative analysis of longitudinally acquired skin images: the assessment and characterization of the evolution of skin features over time. A framework for time-lapsed ...
LP-based subgradient algorithm for joint pricing and inventory control problems
(Massachusetts Institute of Technology, 2008)
It is important for companies to manage their revenues and -reduce their costs efficiently. These goals can be achieved through effective pricing and inventory control strategies. This thesis studies a joint multi-period ...