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The AI Trilogy is a bundling of
several products. We have listed the changes below, grouped by product:
Predictor Changes
Between Releases 2 and 3
New Graphics
The graphics have been updated
and improved.
Row Limits
An artificial limit on the number
of data rows (16000) is removed. The new limit is defined by the operating
system only. It is not, however, how much RAM is installed or the size of your
page file. The operating system puts limits on how much memory each application
is allowed to use for all of its resources (graphic objects, data arrays, etc).
Additional Genetic Training
Methods
The Genetic training method has
two new optimization options: Evolution Strategies and Swarm Optimization. These
two new modern optimization techniques complement GeneHunter's classical genetic
algorithm used in previous versions.
Control Over Breeding Pool Size
The Genetic training method now
allows manual control over breeding pool size and its random initialization
(random number seed).
More Control Over Data
Selection
Random selections of
training/out-of sample data sets is now allowed in addition to the existing
methods. Random selection is done by using either the number of rows or
percentage points. When the random rows option is selected and the user applies
a trained net, there is an option to choose which rows to apply the net to: out
of sample, training or all available rows.
New Optimization Function
Predictor only: The Genetic
training method has a new optimization function: Maximize percent same sign of
actual and predicted values.
Sound Alert for Genetic Method
The Genetic method makes a sound
alert if training has ended because of the "Stop after N generations without
improvement" criterion. This is helpful in the case of lengthy genetic training
sessions to alert you when training has finished. The alert can be selected from
system sound files (.wav files) available from your Windows\Media folder. Use
the test alert button to play the sound and decide which one is best suited for
your taste and environment.
3-D Graphics Add-On
The 3-Dimensional Graphics Add-On is an
additional program for NeuroShell Predictor. It is designed to display a
projection on the screen of a 3-dimensional surface (response curve), formed by
a trained neural network output. The neural network output (dimension Z in 3D space)
is calculated while varying two selected input variables (dimensions X and Y)
and while keeping all other input variables at some fixed values.
Classifier Changes
Between Releases 2 and 3
New Graphics
The graphics have been updated
and improved.
Row Limits
An artificial limit on the number
of data rows (16000) is removed. The new limit is defined by the operating
system only. It is not, however, how much RAM is installed or the size of your
page file. The operating system puts limits on how much memory each application
is allowed to use for all of its resources (graphic objects, data arrays, etc).
Additional Genetic Training
Methods
The Genetic training method has
two new optimization options: Evolution Strategies and Swarm Optimization. These
two new modern optimization techniques complement GeneHunter's classical genetic
algorithm used in previous versions.
Control Over Breeding Pool Size
The Genetic training method now
allows manual control over breeding pool size and its random initialization
(random number seed).
More Control Over Data
Selection
Random selections of
training/out-of sample data sets is now allowed in addition to the existing
methods. Random selection is done by using either the number of rows or
percentage points. When the random rows option is selected and the user applies
a trained net, there is an option to choose which rows to apply the net to: out
of sample, training or all available rows.
Change in Agreement Matrix
The Agreement Matrix displays the
Positive Prediction Value statistic which is yet another measure of how well the
model makes correct classifications in each category. The higher the Positive
Prediction Value the better the model's predictive power.
Sound Alert for Genetic Method
The Genetic method makes a sound
alert if training has ended because of the "Stop after N generations without
improvement" criterion. This is helpful in the case of lengthy genetic training
sessions to alert you when training has finished. The alert can be selected from
system sound files (.wav files) available from your Windows\Media folder. Use
the test alert button to play the sound and decide which one is best suited for
your taste and environment.
Run-time Server
Changes Between Release 3.0 and 3.1
The NeuroShell Run-Time
Server is made compatible with Microsoft Vista and Microsoft Excel 2007.
Three new methods are added to nsrun.dll and
the nsrun.ocx control: PredictorStats,
ClassifierStatMatrix, and
Prob2ClassName. These methods help to compute various kinds of statistics
upon actual and predicted data.
GeneHunter Changes from
2.4 to 3.0
1. GeneHunter
is made Microsoft Windows Vista and Microsoft Excel 2007 compatible:
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GeneHunter Add-In is modified to run under Excel
2007;
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Help file is converted into the HTML Help format
compatible with Microsoft Windows Vista;
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GeneHunter Add-In is modified to call its new help file format.
2. All Visual
Basic 5 examples are updated with Visual Basic 6.
3. The Microsoft
Visual C 4.0 examples are updated with Visual C 6.0.
4. All
Borland Delphi 3.0 examples are updated with Delphi 6.0.
5. All
Microsoft Excel example workbooks are updated with Excel 2003 (they are re-written in
Excel 97-Excel 2003 workbook format).
6. Minor
changes in documentation.
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