cost_function: The cost function fed to Nelder-Mead.
In mailund/admixture_graph: Admixture Graph Manipulation and Fitting

Description Usage Arguments Value See Also

We want Nelder-Mead to run fast so the cost function operates with the column reduced edge optimisation matrix and does not give any extra information about the fit. For the details, use edge_optimisation_function instead.

1 2	cost_function(data, concentration, matrix, graph, parameters = extract_graph_parameters(graph), iteration_multiplier = 3)

`data`	The data set.
`concentration`	The Cholesky decomposition of the inverted covariance matrix.
`matrix`	A column reduced edge optimisation matrix (typically given by the function `build_edge_optimisation_matrix`).
`graph`	The admixture graph.
`parameters`	In case one wants to tweak something in the graph.
`iteration_multiplier`	Given to `mynonneg`.