ENH: Interactive interface for selecting elements of the Taxes and Transfers Graph

[hmgaudecker]

This is extracted from ttsim-dev/gettsim#781 and has been slightly edited. It was a component there, which has not been implemented so far, but keeping that humongous issue open would mean this would get lost.

Is your feature request related to a problem?

GETTSIM's approach of being precise and requiring all relevant inputs means that simple questions can only be answered either with a huge amount of input data or with detailed knowledge of the DAG (e.g., how to cut off the pensions calculations part of the DAG when we have a sample of 30-year olds and ignore DI).

Describe the solution you would like to see

Provide an interactive interfaces for selecting subgraphs (more below)

Interactive interface

• Notebook or other dashboard-style UI
• Allow for a higher-level view of the graph (just the upper-level keys in the hierarchical structure, like arbeitslosengeld_2, sozialversicherung, ... width of edges mirrors the amount of links between individual functions, click on an area opens the internal structure), coloring of nodes following the upper-level keys.
• Clicking on a node means that it will become a root node provided via the data. All nodes that are not necessary anymore disappear / are greyed out. Clicking on that node again makes it an endogenous node again. policy_input nodes (say, gender) do not require explicit selection
• There is a button to export all root nodes, which generates the template for mapping to data columns / the list of data columns.