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Now showing items 41-50 of 62
Natural Learning
(1981-10-01)
This memo reports the results of a case study into how children learn in the absence of explicit teaching. The three subjects, an eight year old, a ten year old and a thirteen year old were observed in both of two ...
A Lightness Scale from Image Intensity Distributions
(1981-08-01)
A lightness scale is derived from a theoretical estimate of the probability distribution of image intensities for natural scenes. The derived image intensity distribution considers three factors: reflectance, surface ...
Manipulator Design Vignettes
(1981-10-01)
This memo is about mechanical arms. The literature on robotics seems to be deficient in such discussions, perhaps because not enough sharp theoretical problems have been formulated to attract interest. I"m sure many of ...
Constraints: A Language for Expressing Almost-Hierarchical Descriptions
(1981-08-01)
We present an interactive system organized around networks of constraints rather than the programs which manipulate them. We describe a language of hierarchical constraint networks. We describe one method of deriving ...
Negotiation as a Metaphor for Distributed Problem Solving
(1981-05-01)
We describe the concept of distributed problem solving and define it as the cooperative solution of problems by a decentralized and loosely coupled collection of problem solvers. This approach to problem solving offers ...
Color Vision and Image Intensities: When Are Changes Material?
(1981-05-01)
Marr has emphasized the difficulty in understanding a biological system or its components without some idea of its goals. In this paper, a preliminary goal for color vision is proposed and analyzed. That goal is to ...
On the Representation of Angular Velocity and Its Effect on the Efficiency of Manipulator Dynamics Computation
(1981-03-01)
Recently there has been considerable interest in efficient formulations of manipulator dynamics, mostly due to the desirability of real-time control or analysis of physical devices using modest computers. The inefficiency ...
Learning New Principles from Precedents and Exercises: The Details
(1981-11-01)
Much Learning is done by way of studying precedents and exercises. A teacher supplies a story, gives a problem, and expects a student both to solve a problem and to discover a principle. The student must find the ...
Thinking About Lots of Things at Once without Getting Confused: Parallelism in Act 1
(1981-05-01)
As advances in computer architecture and changing economics make feasible machines with large-scale parallelism, Artificial Intelligence will require new ways of thinking about computation that can exploit parallelism ...
Active Touch Sensing
(1981-04-01)
The mechanical hand of the future will roll a screw between its fingers and sense, by touch, which end is which. This paper describes a step toward such a manipulator ?? robot finger that is used to recognize small ...