A Collection of Tools to Conduct Levins' Loop Analysis
Compute the Tables of Correlations for a Community Effect matrix
Enumerates all Loops in a (-1, 0, 1) Matrix
Enumerates all Paths from i to j in a Community Matrix
Feedback of a Partially Specified System
Graph a Community Effect Matrix
Graph a Community Matrix
LoopAnalyst
Compute the Adjoint of the Negative Community Matrix
Compute the Community Effect Matrix
Compute the Change in Life Expectancy Matrix
Interactively Make a Community Matrix
Compute the Absolute Feedback Matrix of a Community Matrix
Compute the Weighted Feedback Matrix
Output a Community Matrix or Community Effect Matrix in Conventional F...
Save a Community Matrix
Validate a Community Effect Matrix
Validate a Community Matrix
Compute the Matrix of Weighted Predictions
Performs Levins' loop analysis of qualitatively-specified complex causal systems. Loop analysis makes qualitative predictions of variable change in a system of causally interdependent variables, where "qualitative" means direct causal relationships and indirect causal effects are coded as sign only (i.e. increases, decreases, no change, and ambiguous). This implementation includes output support for graphs in .dot file format for use with visualization software such as 'graphviz' (<https://graphviz.org>). 'LoopAnalyst' provides tools for the construction and output of community matrices, computation and output of community effect matrices, tables of correlations, adjoint, absolute feedback, weighted feedback and weighted prediction matrices, change in life expectancy matrices, and feedback, path and loop enumeration tools.