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Qualitative Process Theory
(1983-05-01)
Things move, collide, flow, bend, heat up, cool down, stretch, break and boil. These and other things that happen to cause changes in objects over time are intuitively characterized as processes. To understand common ...
LetS: An Expressional Loop Notation
(1983-02-01)
Many loops can be more easily understood and manipulated if they are viewed as being built up out of operations on sequences of values. A notation is introduced which makes this viewpoint explicit. Using it, loops can ...
Structure and Interpretation of Computer Programs
(1983-07-01)
"The Structure and Interpretation of Computer Programs" is the entry-level subject in Computer Science at the Massachusetts Institute of Technology. It is required of all students at MIT who major in Electrical ...
Finding Edges and Lines in Images
(1983-06-01)
The problem of detecting intensity changes in images is canonical in vision. Edge detection operators are typically designed to optimally estimate first or second derivative over some (usually small) support. Other ...
Issues in the Design and Implementation of Act 2
(1983-06-01)
Act2 is a highly concurrent programming language designed to exploit the processing power available from parallel computer architectures. The language supports advanced concepts in software engineering, providing ...
Model-Based Recognition and Localization from Sparse Range or Tactile Data
(1983-08-01)
This paper discusses how local measurements of three-dimensional positions and surface normals (recorded by a set of tactile sensors, or by three-dimensional range sensors), may be used to identify and locate objects, ...
Hypothesizing Channels through Free-Space in Solving the Findpath Problem
(1983-06-01)
Given a polyhedral environment, a technique is presented for hypothesizing a channel volume through the free space containing a class of successful collision-free paths. A set of geometric constructions between obstacle ...
Extended Gaussian Images
(1983-07-01)
This is a primer on extended Gaussian Images. Extended Gaussian Images are useful for representing the shapes of surfaces. They can be computed easily from: 1. Needle maps obtained using photometric stereo, or 2. Depth ...
Hidden Clues in Random Line Stereograms
(1983-08-01)
Successful fusion of random-line stereograms with breaks in the vernier acuity range has been previously interpreted to suggest that the interpolation process underlying hyperacuity is parallel and preliminary to ...
A Multiple-Context Equality-Based Reasoning System
(1983-04-01)
Expert systems are too slow. This work attacks that problem by speeding up a useful system component that remembers facts and tracks down simple consequences. The redesigned component can assimilate new facts more ...