TASSET: Analyze Core Sets of Tasks Using Co-Performance

Last updated 19 Nov 97

TASSET compares groups of tasks (modules) using co-performance values. Core tasks are defined as tasks which are members of the module. Potential core tasks are all those tasks whose co-performance value is greater than or equal to either the lowest co-performance value of a core task or a specified cutoff, whichever is greater.

Automatic Process Generation

If an output FACSET file is specified on the program invocation line, a SETSXX will be run, listing all factors created.

Program Invocation

The specific syntax for program invocation varies between operating systems. This document diplays the code for the AIX version.


@codap tasset <opt> <ssss> <TFf1> <TT> [TFf2] [FS]

opt:  G  Do not print group summary report
      L  List overall summary matrix
      T  Do not print task level report
ssss:    The study number
TFf1:    Input Task Factor file (usually tf600)
TT:      Input Task Title file
TFf2:    Input Task Factor file (optional) for obtaining PTS and PMP group
	 vectors (default is <tf1>). (Usually tf100)
FS:      Output FACSET file (optional)

The second Task Factor file is available for those users who prefer to keep related factors on separate files. The co-performance factors are related with task clustering (tf600), while the necessary PTS and PMP vectors are associated with case clustering (tf100). Instead of keeping these factors in the same file, the user should avoid confusion and keep the factors separate.

TASSET Control Card


TASSET <std> <vec> <discut> <unicut> <subcut> <tnucut> <copcut>

TASSET:  cc 01-06  The literal 'TASSET'
std:     cc 08-11  The study number for this run
vec:     cc 13-18  The vector ID for the PTS and PMP factors
discut:  cc 20-25  Task discrimination cutoff (default = 25.00)
unicut:  cc 27-30  Task uniqueness cutoff (default = 0.50)
subcut:  cc 32-37  Supergroup PMP cutoff (default = 0.01)
tnucut:  cc 39-42  Task negative uniqueness cutoff (default = -.25)
copcut:  cc 44-47  Minimum co-performance for determining potential core tasks
		   (default=25.0)

Report Title Card (optional)


TITLE <title>

TITLE:   cc 01-05  The literal 'TITLE'
title:   cc 07-66  The report title for this run

Group Selection Cards

These cards specify the groups to be compared. Up to 398 groups may be specified, with 1 - 11 groups per card. There must be a COP vector available on the input Task Factor file for each group specified.


group1 group2 ... group10 group11

group1:  cc 01-06  Group ID for this group
group2:  cc 08-13  Group ID for this group (optional)
group3:  cc 15-20  Group ID for this group (optional)
group4:  cc 22-27  Group ID for this group (optional)
group5:  cc 29-34  Group ID for this group (optional)
group6:  cc 36-41  Group ID for this group (optional)
group7:  cc 43-48  Group ID for this group (optional)
group8:  cc 50-55  Group ID for this group (optional)
group9:  cc 57-62  Group ID for this group (optional)
group10: cc 64-69  Group ID for this group (optional)
group11: cc 71-76  Group ID for this group (optional)

Example

@codap tasset - ssss tf600 tt001 tf100
TASSET ssss GP0001
TITLE TASSET run for task stage/module comparisons
ST0241
ST0196
ST0074 ST0031 ST0097 ST0046
@eof

This TASSET uses all default values. The percent time spent and percent members performing vectors associated with GP0001 will be used in the computations.

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