Browsing AI Technical Reports (1964 - 2004) by Issue Date
Now showing items 21-40 of 327
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Segmentation and Alignment of Speech and Sketching in a Design Environment
(2003-02-01)Sketches are commonly used in the early stages of design. Our previous system allows users to sketch mechanical systems that the computer interprets. However, some parts of the mechanical system might be too hard or too ... -
Design and Evaluation of the Hamal Parallel Computer
(2002-12-05)Parallel shared-memory machines with hundreds or thousands of processor-memory nodes have been built; in the future we will see machines with millions or even billions of nodes. Associated with such large systems is a new ... -
Achieving Real-Time Mode Estimation through Offline Compilation
(2002-10-22)As exploration of our solar system and outerspace move into the future, spacecraft are being developed to venture on increasingly challenging missions with bold objectives. The spacecraft tasked with completing these ... -
Surface Reflectance Recognition and Real-World Illumination Statistics
(2002-10-01)Humans distinguish materials such as metal, plastic, and paper effortlessly at a glance. Traditional computer vision systems cannot solve this problem at all. Recognizing surface reflectance properties from a single ... -
Towards Man-Machine Interfaces: Combining Top-down Constraints with Bottom-up Learning in Facial Analysis
(2002-09-01)This thesis proposes a methodology for the design of man-machine interfaces by combining top-down and bottom-up processes in vision. From a computational perspective, we propose that the scientific-cognitive question ... -
ADAM: A Decentralized Parallel Computer Architecture Featuring Fast Thread and Data Migration and a Uniform Hardware Abstraction
(2002-06-01)The furious pace of Moore's Law is driving computer architecture into a realm where the the speed of light is the dominant factor in system latencies. The number of clock cycles to span a chip are increasing, while the ... -
Sparsely Faceted Arrays: A Mechanism Supporting Parallel Allocation, Communication, and Garbage Collection
(2002-06-01)Conventional parallel computer architectures do not provide support for non-uniformly distributed objects. In this thesis, I introduce sparsely faceted arrays (SFAs), a new low-level mechanism for naming regions of memory, ... -
A Virtual Machine for a Type-omega Denotational Proof Language
(2002-06-01)In this thesis, I designed and implemented a virtual machine (VM) for a monomorphic variant of Athena, a type-omega denotational proof language (DPL). This machine attempts to maintain the minimum state required to ... -
A Reinforcement-Learning Approach to Power Management
(2002-05-01)We describe an adaptive, mid-level approach to the wireless device power management problem. Our approach is based on reinforcement learning, a machine learning framework for autonomous agents. We describe how our ... -
Generating Communications Systems Through Shared Context
(2002-01-01)In a distributed model of intelligence, peer components need to communicate with one another. I present a system which enables two agents connected by a thick twisted bundle of wires to bootstrap a simple communication ... -
Improving Multi-class Text Classification with Naive Bayes
(2001-09-01)There are numerous text documents available in electronic form. More and more are becoming available every day. Such documents represent a massive amount of information that is easily accessible. Seeking value in this huge ... -
Modeling, Estimation, and Control of Robot-Soil Interactions
(2001-09-01)This thesis presents the development of hardware, theory, and experimental methods to enable a robotic manipulator arm to interact with soils and estimate soil properties from interaction forces. Unlike the majority of ... -
Intelligence by Design: Principles of Modularity and Coordination for Engineerin
(2001-09-01)All intelligence relies on search --- for example, the search for an intelligent agent's next action. Search is only likely to succeed in resource-bounded agents if they have already been biased towards finding the right ... -
2D-3D Rigid-Body Registration of X-Ray Fluoroscopy and CT Images
(2001-08-01)The registration of pre-operative volumetric datasets to intra- operative two-dimensional images provides an improved way of verifying patient position and medical instrument loca- tion. In applications from orthopedics ... -
Importance Sampling for Reinforcement Learning with Multiple Objectives
(2001-08-01)This thesis considers three complications that arise from applying reinforcement learning to a real-world application. In the process of using reinforcement learning to build an adaptive electronic market-maker, we find ... -
Programmable Self-Assembly: Constructing Global Shape using Biologically-inspire
(2001-06-01)In this thesis I present a language for instructing a sheet of identically-programmed, flexible, autonomous agents (``cells'') to assemble themselves into a predetermined global shape, using local interactions. The ... -
Object Recognition with Pictorial Structures
(2001-05-01)This thesis presents a statistical framework for object recognition. The framework is motivated by the pictorial structure models introduced by Fischler and Elschlager nearly 30 years ago. The basic idea is to model an ... -
Feature Point Detection and Curve Approximation for Early Processing of Freehand Sketches
(2001-05-01)Freehand sketching is both a natural and crucial part of design, yet is unsupported by current design automation software. We are working to combine the flexibility and ease of use of paper and pencil with the processing ... -
Design and Control of an Anthropomorphic Robotic Finger with Multi-point Tactile Sensation
(2001-05-01)The goal of this research is to develop the prototype of a tactile sensing platform for anthropomorphic manipulation research. We investigate this problem through the fabrication and simple control of a planar 2-DOF robotic ... -
Predicate Dispatching in the Common Lisp Object System
(2001-05-01)I have added support for predicate dispatching, a powerful generalization of other dispatching mechanisms, to the Common Lisp Object System (CLOS). To demonstrate its utility, I used predicate dispatching to enhance Weyl, ...