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Morphological segmentation : an unsupervised method and application to Keyword Spotting
(Massachusetts Institute of Technology, 2014)
The contributions of this thesis are twofold. First, we present a new unsupervised algorithm for morphological segmentation that utilizes pseudo-semantic information, in addition to orthographic cues. We make use of the ...
Learning articulated motions from visual demonstration
(Massachusetts Institute of Technology, 2014)
Robots operating autonomously in household environments must be capable of interacting with articulated objects on a daily basis. They should be able to infer each object's underlying kinematic linkages purely by observing ...
Discrimination of alcoholics from non-alcoholics using supervised learning on resting EEG
(Massachusetts Institute of Technology, 2014)
Alcoholism is a widespread problem that can have serious medical consequences. Alcoholism screening tests are used to identify patients who are at risk for complications from alcohol abuse, but accurate diagnosis of alcohol ...
Improving clinical risk-stratification tools : instance-transfer for selecting relevant training data
(Massachusetts Institute of Technology, 2014)
One of the primary problems in constructing risk-stratification models for medical applications is that the data are often noisy, incomplete, and suffer from high class-imbalance. This problem becomes more severe when the ...
Sparkle vision : seeing the world through random specular microfacets
(Massachusetts Institute of Technology, 2014)
This thesis studies the problem of reproducing the world lighting from a single image of an object covered with random specular microfacets on the surface. Such a reflector can be interpreted as a randomized mapping from ...
Reducing pause times with clustered collection
(Massachusetts Institute of Technology, 2014)
Clustered Collection reduces garbage collection pauses in programs with large amounts of live data. A full collection of millions of live objects can pause the program for multiple seconds. Much of this work, however, is ...
A programmable pipeline for multi-material fabrication
(Massachusetts Institute of Technology, 2014)
3D printing hardware is rapidly scaling up to output continuous mixtures of multiple materials at increasing resolution over ever larger print volumes. This poses an enormous computational challenge: large high-resolution ...
Analyzing pulse from head motions in video
(Massachusetts Institute of Technology, 2014)
We extract heart rate and beat lengths from videos by measuring subtle head oscillations that accompany the cardiac cycle. Our method tracks features on the head, temporally filters their trajectories and performs principal ...
Finite blocklength analysis of the MISO Coherent Block Fading Channel
(Massachusetts Institute of Technology, 2014)
The Coherent MISO Block Fading Channel is a wireless communication channel model in which the transmitter has access to multiple antennas while the receiver has access to one. This model is becoming increasingly important ...
Analysis and visualization of equilibrium in masonry structures
(Massachusetts Institute of Technology, 2014)
This thesis presents novel analysis and visualization methods to explore the equilibrium of masonry structures. Following a previous approach, we model the stability problem as a quadratic program. When a structure is ...