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commit 15ccb08138e0406f3eed47f8ba1a9334dfdf01d2
parent 5eb7b3625b6314adf3f9ecde502004590dd3ff46
Author: Lynn Foster <>
Date:   Sat,  1 Apr 2017 06:13:01 -0500

Merge pull request #214 from valueflows/algorithms

More Algorithms
Mdocs/appendix/ | 20++++++++++++++++++++
1 file changed, 20 insertions(+), 0 deletions(-)

diff --git a/docs/appendix/ b/docs/appendix/ @@ -2,6 +2,8 @@ This section is about what computer programs (or humans with pencil and paper and a lot of work) can do with Value Flows economic networks once they are constructed on the Web or in a database. +## Network-based algorithms + * **Dependent Demand** constructs schedules for operational economic networks from recipes * Many other scheduling algorithms can be used over the same recipes. * [Gantt charts]( are a popular network schedule visualization. @@ -12,6 +14,15 @@ This section is about what computer programs (or humans with pencil and paper an * **Track and Trace** follow the path of a resource forwards (to where it went) and backwards (where it came from, and what other resources went into it). * **Provenance** is like Trace, focusing on the path of a resource and all of the other resources that went into it. * **Cash Flow** is mostly about money, but could also apply to other resources, looking at the inflows and outflows on a timeline, historical in the past, forecasted in the future. +* **Economic and Ecosystem Analysis**: + * [System Dynamics]( + * [Systems Ecology]( including [Energy Flow Analysis]( + * [Input-Output Analysis]( + * [Environmentally Extended IPO Analysis]( + * [Life Cycle Analysis]( + * [Material Flow Analysis]( + ![material flows]( + * **Network Flows** is a general name for all of those algorithms and many many more. See [Flow Networks]( on Wikipedia and elsewhere. There are similarities and differences among the algorithms: @@ -19,6 +30,15 @@ There are similarities and differences among the algorithms: * Dependent Demand schedules backwards from an end date; Critical Path schedules forwards from a start date. * Dependent Demand does an explosion: breaking down the end resource of a recipe into a tree of components and processes. * Value Rollups do an implosion: summarizing all the inputs of the exploded tree of components and processes into a total value. +* The Economic and Ecosystem algorithms use [Input-Process-Output Models]( * All of those algorithms work on flow networks, otherwise known as directed graphs, composed of nodes and links between them. ![flow network]( + +## Agent-based algorithms + +* [Agent-Based Models]( + * [In biology]( + * [In economics]( + * [In sociology](, including [Social Network Analysis]( +* [Complex adaptive systems](