| slovo | definícia |
neuron
(encz) | neuron,neuron n: |
neuron
(czen) | neuron,neuronn: |
neuron
(czen) | neuron,neuronen: Zdeněk Brož |
Neuron
(gcide) | Neuron \Neu"ron\, n.; pl. Neura. [NL., from Gr. ney^ron
nerve.] (Anat.)
1. The brain and spinal cord; the cerebro-spinal axis;
myelencephalon. [obsolete] --B. G. Wilder.
[1913 Webster]
2. (Cell Biology) The characteristic specialized cell that is
part of the nervous system, serving to conduct electrical
impulses to and from the brain, and also between other
parts of the body, and composed of a main cell body, the
axon, with a varying number of processes of varying
length, the dendrites; a nerve cell. The movement and
behavior of higher animals depends on the signals
tranmsitted by such nerve cells.
[PJC] |
neuron
(wn) | neuron
n 1: a cell that is specialized to conduct nerve impulses [syn:
nerve cell, neuron] |
neuron
(foldoc) | artificial neural network
neural nets
neural network
neuron
NN
(ANN, commonly just "neural network"
or "neural net") A network of many very simple processors
("units" or "neurons"), each possibly having a (small amount
of) local memory. The units are connected by unidirectional
communication channels ("connections"), which carry numeric
(as opposed to symbolic) data. The units operate only on
their local data and on the inputs they receive via the
connections.
A neural network is a processing device, either an
algorithm, or actual hardware, whose design was inspired by
the design and functioning of animal brains and components
thereof.
Most neural networks have some sort of "training" rule whereby
the weights of connections are adjusted on the basis of
presented patterns. In other words, neural networks "learn"
from examples, just like children learn to recognise dogs from
examples of dogs, and exhibit some structural capability for
generalisation.
Neurons are often elementary non-linear signal processors (in
the limit they are simple threshold discriminators). Another
feature of NNs which distinguishes them from other computing
devices is a high degree of interconnection which allows a
high degree of parallelism. Further, there is no idle memory
containing data and programs, but rather each neuron is
pre-programmed and continuously active.
The term "neural net" should logically, but in common usage
never does, also include biological neural networks, whose
elementary structures are far more complicated than the
mathematical models used for ANNs.
See Aspirin, Hopfield network, McCulloch-Pitts neuron.
Usenet newsgroup: news:comp.ai.neural-nets.
(1997-10-13)
|
| | podobné slovo | definícia |
efferent neuron
(encz) | efferent neuron, n: |
motoneuron
(encz) | motoneuron, n: |
motor neuron
(encz) | motor neuron, n: |
neuronal
(encz) | neuronal,neuronový |
neurone
(encz) | neurone,neuron n: Zdeněk Brož |
neuronic
(encz) | neuronic, adj: |
neurons
(encz) | neurons,neurony n: pl. |
sensory neuron
(encz) | sensory neuron, n: |
neuronový
(czen) | neuronový,neuronal |
neurony
(czen) | neurony,neuronsn: pl. |
výběžek neuronu
(czen) | výběžek neuronu,axon Josef Kosek |
vědy zkoumající neurony
(czen) | vědy zkoumající neurony,neuroscience Zdeněk Brož |
Neuron
(gcide) | Neuron \Neu"ron\, n.; pl. Neura. [NL., from Gr. ney^ron
nerve.] (Anat.)
1. The brain and spinal cord; the cerebro-spinal axis;
myelencephalon. [obsolete] --B. G. Wilder.
[1913 Webster]
2. (Cell Biology) The characteristic specialized cell that is
part of the nervous system, serving to conduct electrical
impulses to and from the brain, and also between other
parts of the body, and composed of a main cell body, the
axon, with a varying number of processes of varying
length, the dendrites; a nerve cell. The movement and
behavior of higher animals depends on the signals
tranmsitted by such nerve cells.
[PJC] |
afferent neuron
(wn) | afferent neuron
n 1: a neuron conducting impulses inwards to the brain or spinal
cord [syn: sensory neuron, afferent neuron] |
asplenium platyneuron
(wn) | Asplenium platyneuron
n 1: common North American fern with polished black stripes
[syn: ebony spleenwort, Scott's Spleenwort, {Asplenium
platyneuron}] |
efferent neuron
(wn) | efferent neuron
n 1: a neuron conducting impulses outwards from the brain or
spinal cord [syn: motor neuron, efferent neuron, {motor
nerve fiber}, motoneuron] |
motoneuron
(wn) | motoneuron
n 1: a neuron conducting impulses outwards from the brain or
spinal cord [syn: motor neuron, efferent neuron, {motor
nerve fiber}, motoneuron] |
motor neuron
(wn) | motor neuron
n 1: a neuron conducting impulses outwards from the brain or
spinal cord [syn: motor neuron, efferent neuron, {motor
nerve fiber}, motoneuron] |
neuronal
(wn) | neuronal
adj 1: of or relating to neurons; "neural network" [syn:
neural, neuronal, neuronic] |
neuronic
(wn) | neuronic
adj 1: of or relating to neurons; "neural network" [syn:
neural, neuronal, neuronic] |
neurontin
(wn) | Neurontin
n 1: an anticonvulsant (trade name Neurontin) used to control
some types of seizures in the treatment of epilepsy; also
used to manage neuralgia caused by shingles [syn:
gabapentin, Neurontin] |
sensory neuron
(wn) | sensory neuron
n 1: a neuron conducting impulses inwards to the brain or spinal
cord [syn: sensory neuron, afferent neuron] |
mcculloch-pitts neuron
(foldoc) | McCulloch-Pitts neuron
The basic building block of
artificial neural networks. It receives one or more inputs
and produces one or more identical outputs, each of which is a
simple non-linear function of the sum of the inputs to the
neuron. The non-linear function is typically a threshhold or
step function which is usually smoothed (i.e. a sigmoid) to
facilitate learning.
(1997-10-11)
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