NAME: Metricnct

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.

SEE ALSO

Pipe, Connect