Browsing AI Technical Reports (1964 - 2004) by Title
Now showing items 173-192 of 327
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Multistep Methods for Integrating the Solar System
(1988-07-01)High order multistep methods, run at constant stepsize, are very effective for integrating the Newtonian solar system for extended periods of time. I have studied the stability and error growth of these methods when ... -
Naive Physics, Event Perception, Lexical Semantics, and Language Acquisition
(1993-04-01)This thesis proposes a computational model of how children may come to learn the meanings of words in their native language. The proposed model is divided into two separate components. One component produces semantic ... -
The Named-State Register File
(1993-08-01)This thesis introduces the Named-State Register File, a fine-grain, fully-associative register file. The NSF allows fast context switching between concurrent threads as well as efficient sequential program performance. ... -
Natural Language Input for a Computer Problem Solving System
(1964-09-01)The STUDENT problem solving system, programmed in LISP, accepts as input a comfortable but restricted subset of English which can express a wide variety of algebra story problems. STUDENT finds the solution to a large ... -
Natural Object Categorization
(1987-11-01)This thesis addresses the problem of categorizing natural objects. To provide a criteria for categorization we propose that the purpose of a categorization is to support the inference of unobserved properties of objects ... -
New Progress in Artificial Intelligence
(1974-09-01)This report concentrates on progress during the last two years at the M.I.T. Artificial Intelligence Laboratory. Topics covered include the representation of knowledge, understanding English, learning and debugging, ... -
Noise Reduction Using Low Weight and Constant Weight Coding Techniques
(1990-05-01)Signalling off-chip requires significant current. As a result, a chip's power-supply current changes drastically during certain output-bus transitions. These current fluctuations cause a voltage drop between the chip ... -
An O(N) Algorithm for Three-Dimensional N-Body Simulations
(1987-10-01)We develop an algorithm that computes the gravitational potentials and forces on N point-masses interacting in three-dimensional space. The algorithm, based on analytical techniques developed by Rokhlin and Greengard, ... -
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 ... -
On Directional Selectivity in Vertebrate Retina: An Experimental and Computational Study
(1992-01-01)This thesis describes an investigation of retinal directional selectivity. We show intracellular (whole-cell patch) recordings in turtle retina which indicate that this computation occurs prior to the ganglion cell, ... -
On Interpreting Stereo Disparity
(1989-02-01)The problems under consideration center around the interpretation of binocular stereo disparity. In particular, the goal is to establish a set of mappings from stereo disparity to corresponding three-dimensional scene ... -
On Motion Planning with Uncertainty
(1984-08-01)Robots must successfully plan and execute tasks in the presence of uncertainty. Uncertainty arises from errors in modeling, sensing, and control. Planning in the presence of uncertainty constitutes one facet of the ... -
On Probabilistic Strategies for Robot Tasks
(1989-08-01)Robots must act purposefully and successfully in an uncertain world. Sensory information is inaccurate or noisy, actions may have a range of effects, and the robot's environment is only partially and imprecisely ... -
Online Learning of Non-stationary Sequences
(2003-06-12)We consider an online learning scenario in which the learner can make predictions on the basis of a fixed set of experts. The performance of each expert may change over time in a manner unknown to the learner. We formulate ... -
ONTIC: A Knowledge Representation System for Mathematics
(1987-07-01)Ontic is an interactive system for developing and verifying mathematics. Ontic's verification mechanism is capable of automatically finding and applying information from a library containing hundreds of mathematical ... -
Optimal Unsupervised Learning in Feedforward Neural Networks
(1989-01-01)We investigate the properties of feedforward neural networks trained with Hebbian learning algorithms. A new unsupervised algorithm is proposed which produces statistically uncorrelated outputs. The algorithm causes ... -
Parallel Coupled Micro-Macro Actuators
(1996-01-01)This thesis presents a new actuator system consisting of a micro-actuator and a macro-actuator coupled in parallel via a compliant transmission. The system is called the Parallel Coupled Micro-Macro Actuator, or PaCMMA. ... -
A Parallel Crossbar Routing Chip for a Shared Memory Multiprocessor
(1991-03-01)This thesis describes the design and implementation of an integrated circuit and associated packaging to be used as the building block for the data routing network of a large scale shared memory multiprocessor system. ... -
Parallel Methods for Synthesizing Whole-Hand Grasps from Generalized Prototypes
(1994-01-01)This report addresses the problem of acquiring objects using articulated robotic hands. Standard grasps are used to make the problem tractable, and a technique is developed for generalizing these standard grasps to ... -
A Parallel Processing Model of Musical Structures
(1971-09-01)Euterpe is a real-time computer system for the modeling of musical structures. It provides a formalism wherein familiar concepts of musical analysis may be readily expressed. This is verified by its application to the ...
