Browsing AI Memos (1959  2004) by Title
Now showing items 206225 of 1217

A Control Algorithm for Chaotic Physical Systems
(19911001)Control algorithms which exploit the unique properties of chaos can vastly improve the design and performance of many practical and useful systems. The program Perfect Moment is built around such an algorithm. Given ... 
Control Algorithms for Chaotic Systems
(19910301)This paper presents techniques that actively exploit chaotic behavior to accomplish otherwiseimpossible control tasks. The state space is mapped by numerical integration at different system parameter values and ... 
Control and Learning by the State Space Model: Experimental Findings
(19770401)This is the second of a two part presentation of a model for motor control and learning. The model was implemented using a small computer and the MIT Scheinman manipulator. Experiments were conducted which demonstrate ... 
Control of a Tendon Arm
(19810201)The dynamics and control of tendon driven three degree of freedom shoulder joint are studied. A control scheme consisting of two phases has been developed. In the first phase, approximation of the time optimal control ... 
Convergence Rates of Approximation by Translates
(19920301)In this paper we consider the problem of approximating a function belonging to some funtion space Î¦ by a linear comination of n translates of a given function G. Ussing a lemma by Jones (1990) and Barron (1991) we show ... 
Convergence Results for the EM Approach to Mixtures of Experts Architectures
(19931101)The ExpectationMaximization (EM) algorithm is an iterative approach to maximum likelihood parameter estimation. Jordan and Jacobs (1993) recently proposed an EM algorithm for the mixture of experts architecture of ... 
CONVERT
(19660601)A programming language is described which is applicable to problems conveniently described by transformation rules. By this we mean that patterns may be prescribed, each being associated with a skeleton, so that a series ... 
Cooperative Computation of Stereo Disparity
(19760601)The extraction of stereo disparity information from two images depends upon establishing a correspondence between them. This article analyzes the nature of the correspondence computation, and derives a cooperative algorithm ... 
Cooperative Physics of Fly Swarms: An Emergent Behavior
(19950411)We have simulated the behavior of several artificial flies, interacting visually with each other. Each fly is described by a simple tracking system (Poggio and Reichardt, 1973; Land and Collett, 1974) which summarizes ... 
CoordinateIndependent Computations on Differential Equations
(19980301)This project investigates the computational representation of differentiable manifolds, with the primary goal of solving partial differential equations using multiple coordinate systems on general n dimensional spaces. ... 
The Coordination of Arm Movements: An Experimentally Confirmed Mathematical Model
(19841101)This paper presents studies of the coordination f voluntary human arm movements. A mathematical model is formulated which is shown to predict both the qualitative features and the quantitative details observed ... 
The Copycat Project: An Experiment in Nondeterminism and Creative Analogies
(19840101)A microworld is described, in which many analogies involving strikingly different concepts and levels of subtlety can be made. The question "What differentiates the good ones from the bad ones?" is discussed, and ... 
CorpusBased Techniques for Word Sense Disambiguation
(19980527)The need for robust and easily extensible systems for word sense disambiguation coupled with successes in training systems for a variety of tasks using large online corpora has led to extensive research into corpusbased ... 
Correspondence and Affine Shape from Two Orthographic Views: Motion and Recognition
(19911201)The paper presents a simple model for recovering affine shape and correspondence from two orthographic views of a 3D object. It is shown that four corresponding points along two orthographic views, taken under similar ... 
CREF: An Editing Facility for Managing Structured Text
(19850201)This paper reports work in progress on an experimental text editor called CREF, the Cross Referenced Editing Facility. CREF deals with chunks of text, called segments, which may have associated features such as keywords ... 
A Criterion for the Optimal Design of Multiaxis Force Sensors
(19901001)This paper deals with the design of multiaxis force (also known as force/torque) sensors, as considered within the framework of optimal design theory. The principal goal of this paper is to identify a mathematical ... 
CTSS LISP NoticeSupplement to A.I. Memo No. 67
(19641201)The LISP system (command version) has been updated. Bugs are corrected include: 1. out of pushdown list in compiled function will not transfer to 77777. 2. with compiler printing turned off by comprint, it is truly off. ... 
The Curvature Primal Sketch
(19840201)In this paper we introduce a novel representation of the significant changes in curvature along the bounding contour of planar shape. We call the representation the curvature primal sketch. We describe an implemented ... 
The Curve of Least Energy
(19810101)Here we search for the curve which has the smallest integral of the square of curvature, while passing through two given points with given orientation. This is the true shape of a spline used in lofting. In computeraided ... 
Curved Inertia Frames: Visual Attention and Perceptual Organization Using Convexity and Symmetry
(19911001)In this paper we present an approach to perceptual organization and attention based on Curved Inertia Frames (C.I.F.), a novel definition of "curved axis of inertia'' tolerant to noisy and spurious data. The definition ...