ASPL User's Guide v 1.00
© 2024 by SetSphere.com
Similarity is a cosine based calculation of the angle between vectors in a plane. Setting aside its implementation, ASPL provides the similarity or its abbreviation sim as a command to calculate the similarity between your datasets. In this example, we will load the RANDONEBIT and calculate the similarity between the randomly generated groups in the workspace:
# aspl -wsname RANDONEBIT -groupingclass BITGROUP
aspl> sim v1 v2 v3
display the similarity between v1 v2 and v3
aspl> simi123 = sim v1 v2 v3
assign the similarity calculatiion to COS variable simi123
aspl> c
display the COS symbol table
aspl> ?c simi123
interrogate the similarity variable simi123
aspl> ??c simi123
really interrogate simi123
aspl> c sorted
display COS symbol table in sorted mode
aspl> v sorted
display the symbol table in sorted mode
aspl> @c simi123
display the archived COS variables for simi123
aspl> @@c simi123
display the dependencies for COS variables simi123
aspl> quit
leave ASPL without saving the workspace RANDONEBIT
A similarity variable is interrogated by preceding it with the operator ?c
To really interrogate a similarity COS variable by sourcing the variables it depends on, precede the COS variable with the operator ??c and
this will cause sourcing the dependendies variables and may also result in updates in the sourced variables.
this will cause sourcing the dependendies variables and may also result in updates in the sourced variables.
To view the archived similarities of a COS variable, precede the variable name with the operator @c
To view the variables that a COS variable depend on, precede the COS variable name with the operator @@c
ASPL set variables are stored in datasets symbol table (or simply called variables-symbol-table), while ASPL similarity variables are stored in COS-symbol-table. To display the variables-symbol-table use the command v or v sorted and to view the COS-symbol-table use the command c or c sorted
Remember that ASPL stores the similarity variables in its COS symbol table that you can display its contents anytime by typing any of the following commands at the ASPL prompt: c C cos COS