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The Copycat Project: An Experiment in Nondeterminism and Creative Analogies
(1984-01-01)
A micro-world 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 ...
Biophysics of Computation: Neurons, Synapses and Membranes
(1984-10-01)
Synapses, membranes and neurotransmitters play an important role in processing information in the nervous system. We do not know, however, what biophysical mechanisms are critical for neuronal computations, what ...
Hypothesizing and Refining Causal Models
(1984-12-01)
An important common sense competence is the ability to hypothesize causal relations. This paper presents a set of constraints which make the problem of formulating causal hypotheses about simple physical systems a ...
On the Complexity of ID/LP Parsing
(1984-12-01)
Recent linguistic theories cast surface complexity as the result of interacting subsystems of constraints. For instance, the ID/LP grammar formalism separates constraints on immediate dominance from those on linear ...
Toward a Principle-Based Parser
(1984-07-01)
Parser design lags behind linguistic theory. While modern transformational grammar has largely abandoned complex, language-specific rule systems in favor of modular subsystems of principles and parameters, the rule ...
What a Parallel Programming Language Has to Let You Say
(1984-09-01)
We have implemented in simulation a prototype language for the Connection Machine called CL1. CL1 is an extrapolation of serial machine programming language technology: in CL1 one programs the individual processors ...
Surface Reconstruction Preserving Discontinuities
(1984-08-01)
Well-known methods for solving the shape-from-shading problem require knowledge of the reflectance map. Here we show how the shape-from-shading problem can be solved when the reflectance map is not available, but is known ...
Kinematic Features of Unrestrained Arm Movements
(1984-07-01)
Unrestrained human arm trajectories between point targets have been investigated using a three dimensional tracking apparatus, the Selspot system. Movements were executed between different points in a vertical plane ...
A Circuit Grammar For Operational Amplifier Design
(1984-01-01)
Electrical circuit designers seldom create really new topologies or use old ones in a novel way. Most designs are known combinations of common configurations tailored for the particular problem at hand. In this thesis ...
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 ...