SYNOPSIS:
Metricnct [options] FromGroup ToGroup Net
DESCRIPTION
Metricnct is used to create connections between two groups with the connectivity
depending on the "distance" between the two units. The units in each group are
numbered and the "distance is calculated from the difference in this ordering
number for pairs of units. The ordering number is normalized for varying number
of units in the from-group and the to-group, i.e., the distance is zero between the
last units in the groups, no matter the number of units in the groups.
OPTIONS
-d delay
Delays connections "delay" time-units, where "delay" is a positive or negative
integer. A negative time-delay is a look-ahead. Look-ahead connections are
allowed in the NICO tolkit as long as no unit's activation depends on the
same unit's activation at present or future times.
-D low high
Use this option to create a window of dynamic connections for the "To" units.
Connections with all time-delays from "low" to "high" are created.
-r bound
By default, the connection weights are initialized by a square
distributed random number R[-0.1;0.1]. This option controls the min. and max.
values of the distibution (R[-bound;bound]).
-s param
This option sets the spread coefficient. It determines how fast the connectivity
decays as a function of the distance between units. The default value (1.0) is not
a good choice in many cases. It is recommended to experiment with different values
to get a reasonable
number of connections.
-f fraction
Set the overall connectivity. The default value of 100 has the effect that the
connection probability is 100% when the distance is zero. A lower value reduces
the connection probability proportionally.
-c
This option selects a toroid (cyclic) connction metric such that the distance
between the first and last unit of a group is one, i.e., the same as beween two
consecutive units.