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Pole

Balancing task

 

� NeuroEvolution of Augmenting Topologies (NEAT) software

for evolving neural networks using structure

 

Various (C++) Neural Networks

 

� Web site: www.dontveter.com/nnsoft/nnsoft.html

 

Example neural net codes from the book, The Pattern

Recognition Basics of AI. These are simple example codes of

these various neural nets. They work well as a good starting

point for simple experimentation and for learning what the code

is like behind the simulators. The types of networks available

on this site are: (implemented in C++)

 

� The Backprop Package

 

� The Nearest Neighbor Algorithms

 

� The Interactive Activation Algorithm

 

� The Hopfield and Boltzman machine Algorithms

 

� The Linear Pattern Classifier

 

� ART I

 

� BiDirectional Associative Memory

 

� The Feedforward Counter-Propagation Network

 

3.2. Connectionist software kits/applications

 

These are various applications, software kits, etc. meant for research

in the field of Connectionism. Their ease of use will vary, as they

were designed to meet some particular research interest more than as

an easy to use commercial package.

 

Aspirin - MIGRAINES

(am6.tar.Z on ftp site)

 

� FTP site: sunsite.unc.edu/pub/academic/computer-science/neural-networks/programs/Aspirin/

 

The software that we are releasing now is for creating, and

evaluating, feedforward networks such as those used with the

backpropagation learning algorithm. The software is aimed both

at the expert programmer/neural network researcher who may wish

to tailor significant portions of the system to his/her precise

needs, as well as at casual users who will wish to use the

system with an absolute minimum of effort.

 

DDLab

 

� Web site: www.santafe.edu/~wuensch/ddlab.html

 

� FTP site: ftp.santafe.edu/pub/wuensch/

 

DDLab is an interactive graphics program for research into the

dynamics of finite binary networks, relevant to the study of

complexity, emergent phenomena, neural networks, and aspects of

theoretical biology such as gene regulatory networks. A network

can be set up with any architecture between regular CA (1d or

2d) and “random Boolean networks” (networks with arbitrary

connections and heterogeneous rules). The network may also have

heterogeneous neighborhood sizes.

 

GENESIS

 

� Web site: www.genesis-sim.org/GENESIS/

 

� FTP site: genesis-sim.org/pub/genesis/

 

GENESIS (short for GEneral NEural SImulation System) is a

general purpose simulation platform which was developed to

support the simulation of neural systems ranging from complex

models of single neurons to simulations of large networks made

up of more abstract neuronal components. GENESIS has provided

the basis for laboratory courses in neural simulation at both

Caltech and the Marine Biological Laboratory in Woods Hole, MA,

as well as several other institutions. Most current GENESIS

applications involve realistic simulations of biological neural

systems. Although the software can also model more abstract

networks, other simulators are more suitable for backpropagation

and similar connectionist modeling.

 

JavaBayes

 

� Web site: www.cs.cmu.edu/People/javabayes/index.html/

 

The JavaBayes system is a set of tools, containing a graphical

editor, a core inference engine and a parser. JavaBayes can

produce:

 

� the marginal distribution for any variable in a network.

 

� the expectations for univariate functions (for example,

expected value for variables).

 

� configurations with maximum a posteriori probability.

 

� configurations with maximum a posteriori expectation for

univariate functions.

 

Jbpe

 

� Web site: cs.felk.cvut.cz/~koutnij/studium/jbpe.html

 

Jbpe is a backpropagation neural network editor/simulator.

 

Features

 

� Standart backpropagation networks creation.

 

� Saving network as a text file, which can be edited and loaded

back.

 

� Saving/loading binary file

 

� Learning from a text file (with structure specified below),

number of learning periods / desired network energy can be

specified as a criterion.

 

� Network recall

 

Neural Network Generator

 

� Web site: www.idsia.ch/~rafal/research.html

 

� FTP site: ftp.idsia.ch/pub/rafal

 

The Neural Network Generator is a genetic algorithm for the

topological optimization of feedforward neural networks. It

implements the Semantic Changing Genetic Algorithm and the Unit-Cluster Model. The Semantic Changing Genetic Algorithm is an

extended genetic algorithm that allows fast dynamic adaptation

of the genetic coding through population analysis. The Unit-Cluster Model is an approach to the construction of modular

feedforward networks with a ”backbone” structure.

 

NOTE: To compile this on Linux requires one change in the

Makefiles. You will need to change ‘-ltermlib’ to ‘-ltermcap’.

 

Neureka ANS (nn/xnn)

 

� FTP site: ftp.ii.uib.no/pub/neureka/

 

nn is a high-level neural network specification language. The

current version is best suited for feedforward nets, but

recurrent models can and have been implemented, e.g. Hopfield

nets, Jordan/Elman nets, etc. In nn, it is easy to change

network dynamics. The nn compiler can generate C code or

executable programs (so there must be a C compiler available),

with a powerful command line interface (but everything may also

be controlled via the graphical interface, xnn). It is possible

for the user to write C routines that can be called from inside

the nn specification, and to use the nn specification as a

function that is called from a C program. Please note that no

programming is necessary in order to use the network models that

come with the system (`netpack’).

 

xnn is a graphical front end to networks generated by the nn

compiler, and to the compiler itself. The xnn graphical

interface is intuitive and easy to use for beginners, yet

powerful, with many possibilities for visualizing network data.

 

NOTE: You have to run the install program that comes with this

to get the license key installed. It gets put (by default) in

usrlib. If you (like myself) want to install the package

somewhere other than in the /usr directory structure (the

install program gives you this option) you will have to set up

some environmental variables (NNLIBDIR & NNINCLUDEDIR are

required). You can read about these (and a few other optional

variables) in appendix A of the documentation (pg 113).

 

NEURON

 

� Web site: www.neuron.yale.edu/

 

NEURON is an extensible nerve modeling and simulation program.

It allows you to create complex nerve models by connecting

multiple one-dimensional sections together to form arbitrary

cell morphologies, and allows you to insert multiple membrane

properties into these sections (including channels, synapses,

ionic concentrations, and counters). The interface was designed

to present the neural modeler with a intuitive environment and

hide the details of the numerical methods used in the

simulation.

 

PDP++

 

� Web site: www.cnbc.cmu.edu/Resources/PDP++/

 

� FTP site (US): cnbc.cmu.edu/pub/pdp++/

 

� FTP mirror (US): grey.colorado.edu/pub/oreilly/pdp++/

 

As the field of Connectionist modeling has grown, so has the

need for a comprehensive simulation environment for the

development and testing of Connectionist models. Our goal in

developing PDP++ has been to integrate several powerful software

development and user interface tools into a general purpose

simulation environment that is both user friendly and user

extensible. The simulator is built in the C++ programming

language, and incorporates a state of the art script interpreter

with the full expressive power of C++. The graphical user

interface is built with the Interviews toolkit, and allows full

access to the data structures and processing modules out of

which the simulator is built. We have constructed several useful

graphical modules for easy interaction with the structure and

the contents of neural networks, and we’ve made it possible to

change and adapt many things. At the programming level, we have

set things up in such a way as to make user extensions as

painless as possible. The programmer creates new C++ objects,

which might be new kinds of units or new kinds of processes;

once compiled and linked into the simulator, these new objects

can then be accessed and used like any other.

 

RNS

 

� Web site: www.cs.cmu.edu/afs/cs/project/ai-repository/ai/areas/neural/systems/rns/

 

RNS (Recurrent Network Simulator) is a simulator for recurrent

neural networks. Regular neural networks are also supported. The

program uses a derivative of the backpropagation algorithm, but

also includes other (not that well tested) algorithms.

 

Features include

 

� freely choosable connections, no restrictions besides memory

or CPU constraints

 

� delayed links for recurrent networks

 

� fixed values or thresholds can be specified for weights

 

� (recurrent) backpropagation, Hebb, differential Hebb,

simulated annealing and more

 

� patterns can be specified with bits, floats, characters,

numbers, and random bit patterns with Hamming distances can

be chosen for you

 

� user definable error functions

 

� output results can be used without modification as input

 

Simple Neural Net (in Python)

 

� Web site: http://www.amk.ca/python/unmaintained/

 

Simple neural network code, which implements a class for 3-level

networks (input, hidden, and output layers). The only learning

rule implemented is simple backpropagation. No documentation (or

even comments) at all, because this is simply code that I use to

experiment with. Includes modules containing sample datasets

from Carl G. Looney’s NN book. Requires the Numeric extensions.

 

SCNN

 

� Web site: www.uni-frankfurt.de/fb13/iap/e_ag_rt/SCNN/

 

SCNN is an universal simulating system for Cellular Neural

Networks (CNN). CNN are analog processing neural networks with

regular and local interconnections, governed by a set of

nonlinear ordinary differential equations. Due to their local

connectivity, CNN are realized as VLSI chips, which operates at

very high speed.

 

Semantic Networks in Python

 

� Web site: strout.net/info/coding/python/ai/index.html

 

The semnet.py module defines several simple classes for building

and using semantic networks. A semantic network is a way of

representing knowledge, and it enables the program to do simple

reasoning with very little effort on the part of the programmer.

 

The following classes are defined:

 

� Entity: This class represents a noun; it is something which

can be related to other things, and about which you can store

facts.

 

� Relation: A Relation is a type of relationship which may

exist between two entities. One special relation, “IS_A”, is

predefined because it has special meaning (a sort of logical

inheritance).

 

� Fact: A Fact is an assertion that a relationship exists

between two entities.

 

With these three object types, you can very quickly define

knowledge about a set of objects, and query them for logical

conclusions.

 

SNNS

 

� Web site: www-ra.informatik.uni-tuebingen.de/SNNS/

 

� FTP site: ftp.informatik.uni-stuttgart.de/pub/SNNS/

 

Stuttgart Neural Net Simulator (version 4.1). An awesome neural

net simulator. Better than any commercial simulator I’ve seen.

The simulator kernel is written in C (it’s fast!). It supports

over 20 different network architectures, has 2D and 3D X-based

graphical representations, the 2D GUI has an integrated network

editor, and can generate a separate NN program in C. SNNS is

very powerful, though a bit difficult to learn at first. To help

with this it comes with example networks and tutorials for many

of the architectures. ENZO, a supplementary system allows you

to evolve your networks with genetic algorithms.

 

SPRLIB/ANNLIB

 

� Web site: www.ph.tn.tudelft.nl/~sprlib/

 

SPRLIB (Statistical Pattern Recognition Library) was developed

to support the easy construction and simulation of pattern

classifiers. It consist of a library of functions (written in C)

that can be called from your own program. Most of the well-known

classifiers are present (k-nn, Fisher, Parzen, ….), as well as

error estimation and dataset generation routines.

 

ANNLIB (Artificial Neural Networks Library) is a neural network

simulation library based on the data architecture laid down by

SPRLIB. The library contains numerous functions for creating,

training and testing feedforward networks. Training algorithms

include backpropagation, pseudo-Newton, Levenberg-Marquardt,

conjugate gradient descent, BFGS…. Furthermore, it is possible

- due to the datastructures’ general applicability - to build

Kohonen maps and other more exotic network architectures using

the same data types.

 

TOOLDIAG

 

� Web site: www.inf.ufes.br/~thomas/home/soft.html

 

� Alt site: http://www.cs.cmu.edu/afs/cs/project/ai-repository/ai/areas/neural/systems/tooldiag/0.html

 

TOOLDIAG is a collection of methods for statistical pattern

recognition. The main area of application is classification. The

application area is limited to multidimensional continuous

features, without any missing values. No symbolic features

(attributes) are allowed. The program in implemented in the ‘C’

programming language and was tested in several computing

environments.

 

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